Thursday, August 31, 2023

Pumped Storage Hydropower: The Most Common and Lowest Emissions Intensity Long-Duration Energy Storage Technology

    According to the Energy Information Administration: In 2022, the United States had about 23 GW of total pumped-storage hydroelectric generating capacity in 18 states, and 5 states combined had 61% of that total: California 17%; Virginia 14%; South Carolina 12%; Michigan 9%; and Georgia 8%. Pumped storage systems work by pumping water uphill or up gradient and letting it flow downhill by gravity to provide hydroelectric power when needed. It takes more energy to pump the water up gradient than the hydroelectric power produced so these systems consume more energy than they produce. Thus, pumped storage hydro is not truly a “source” of energy, but a method of energy storage. These systems are typically charged by pumping up gradient during off-peak periods of energy consumption and their energy is typically dispatched during peak periods of energy consumption. In the U.S. pumped storage hydro makes up about 94% of utility-scale energy storage capacity and 99% of all energy storage. Globally, pumped storage hydro (PSH) makes up 94% of all energy storage with the ability to store an estimated 9000 gigawatt hours (GWh) of electricity. This amounts to 158GW of capacity. Thus, the U.S. has about 14.5% of global PSH capacity. There are about 43 PSH facilities in the U.S. that can store 553 GWh of electricity. Global capacity is forecasted to rise to about 240GW by 2030. Both globally and in the U.S. there is an abundance of sites where new PSH can be built if needed. Most of these are in mountainous and hilly areas with significant gradients and topography that allow the construction of upper and lower reservoirs.  






Source: Closed-Loop Pumped Storage Hydropower Resource Assessment for the United States: Final Report on HydroWIRES Project D1: Improving Hydropower and PSH Representations in Capacity Expansion Models. May 2022. Closed-Loop Pumped Storage Hydropower Resource Assessment for the United States. Final Report on HydroWIRES Project D1: Improving Hydropower and PSH Representations in Capacity Expansion Models (nrel.gov)



Source: Pumped Storage Tracking Tool. International Hydropower Association. Pumped Storage Tracking Tool: International Hydropower Association



Source: A Review of Technology Innovations for Pumped Storage Hydropower. April 2022. Vladimir Koritarov, Jonghwan Kwon, Quentin Ploussard, Patrick Balducci. HydroWires. U.S. D.O.E. A Review of Technology Innovations for Pumped Storage Hydropower (anl.gov)


     The first pumped storage plant was built in Zurich, Switzerland in 1891 on the Limmat River. In the U.S. the first PSH plant was built in 1929 in Connecticut. The two main types of pumped storage hydro are Open-loop: where either an upper or lower reservoir is continuously connected to a naturally flowing water source such as a river and Closed-loop: where an ‘off-river’ site produces power from water pumped to an upper reservoir without a significant natural inflow.

 



Closed-Loop Pumped Storage Hydro. Source: International Hydropower Association

 




Fixed-Speed PSH, Adjustable-Speed PSH, Ternary PSH, Quaternary PSH, and Small, Modular PSH

 

     According to the DOE: “Most existing PSH plants in the world use traditional fixed-speed (or single-speed) technology. They employ a synchronous machine as motor-generator, which operates in sync with the grid frequency. This is also the case with most other generating technologies, as they typically employ synchronous machines to generate electricity. While other technologies use synchronous machines only as generators, PSH plants use them as both motors and generators. The synchronous machine is used as a motor when the PSH unit operates in the pumping mode, consuming the electricity from the grid to pump the water into the upper reservoir. The same synchronous machine is used as a generator when the water is released from the upper reservoir, reversing the direction of rotation, to generate electricity for the grid.”

     Due to electricity demand changes, particularly a drop in demand at night, there is often a need for baseload power plants to keep running at normal output. One way to do this is to have PSH plants pump water upgradient at night. Adjustable-speed PSH plants can provide this needed additional nighttime load. Additionally, adjustable PSH can provide frequency and voltage regulation while in pumping mode. Adjustable PSH plants have been built in Japan, Europe, and a few other countries but not yet in the U.S., although some have been proposed. There are more than 20 in operation globally. They are slightly more expensive to build and operate than fixed-speed PSH plants.

    Ternary technology uses three components: a motor-generator, a separate turbine, and a separate pump, which are designed with “hydraulic short circuit” capabilities when the pump and turbine are operating simultaneously in the same direction. The pump and turbine can be disconnected with a clutch. There are a couple of different configurations. These configurations offer very good operational flexibility, particularly in pumping mode. More flexibility in the full range of pumping mode offers superior frequency and voltage regulation capabilities. However, construction and operating costs are higher.

     With quaternary PSH, in addition to a separate pump and turbine there is a separate motor and generator. That makes four parts, thus quaternary. This technology employs two shafts. While CAPEX and OPEX costs are higher yet, the operational flexibility is optimized in both pumping and generating modes.

     Small, modular PSH is focused on reducing costs by utilizing standardized off-the-shelf equipment and components which can allow for modular PSH designs that can be built and deployed quickly. Most proposed designs are small at 10MW or less but can be banked together into multiple units as sites allow. These are typically closed-loop designs.



PSH Regulatory and Environmental Challenges


     The biggest challenges to new PHS designs are 1) revenue uncertainties; 2) long and complicated permitting and licensing requirements and times; 3) environmental issues – these are more common with open-loop PSH. Closed-loop PSH has less environmental impact and the reservoirs are normally void of fish and aquatic life. They can repurpose abandoned mines and brownfield sites; and 4) regulatory issues – like permitting issues, these can be addressed by redesignations and streamlining timelines.

     

 

PSH Ancillary Services

 

All energy storage provides excellent ancillary services for the power grid. PSH can provide those services continuously for a longer period of time. According to the International Hydropower Association (IHA):

 

Pumped hydro offers services such as system inertia, frequency control, voltage regulation, storage and reserve power with rapid mode changes, and black-start capability. All of these are vital to support the ever-growing proportion of variable renewables.”

 

Pumped hydro excels at long discharge duration and its high power capacity will be crucial in avoiding curtailment, reducing transmission congestion, and reducing overall costs and emissions in the power sector.

 

In addition, pumped hydro enjoys several distinct advantages over other forms of energy storage due to its long asset life, low-lifetime cost and independence from raw materials.”

 

 

Levelized Cost of Storage (LCOS) is Expected to Improve for Chemical Batteries but LCOS for PSH Will Always Be Better at Durations Longer Than 8-12 Hours

 

     The costs of different kinds of energy storage are compared by a metric known as levelized cost of storage (LCOS) which is calculated similarly to levelized cost of electricity (LCOE). According to a 2019 paper in Joule: while PSH has enjoyed a lower levelized cost of storage in the past, it is expected to stay at a similar LCOS while lithium-ion and vanadium flow batteries are expected to drop in price with the LCOS becoming better for those technologies. However, with unexpected rises in lithium prices due to demand the LCOS reduction process has slowed. Thus, the paper’s prediction of lithium-ion and vanadium flow storage overtaking PSH by 2025 may be delayed. Duration of discharge and annual cycle requirements complicate the comparisons. PSH offers superior long-duration storage compared to the others. It can support seasonal changes in wind and especially solar output much more effectively. That gives it a value difficult to assign in LCOS/LCOE models. It is difficult to assign discount rates to each tech in economic modeling. Basically, as the 2020 Clean Technica article points out, comparing storage technologies like lithium-ion, sulfur flow, and vanadium flow to PSH, is dependent on time, or duration.

 


Source: Nate Brinkerhoff.
 Lithium-Ion Energy Storage Cost Vs. Pumped Hydro Or Flow Battery Cost Are Dependent On Time. Nate Brinkerhoff. Clean Technica. April 25, 2020. Lithium-Ion Energy Storage Cost vs. Pumped Hydro Or Flow Battery Cost Are Dependent On Time - CleanTechnica



The graph shows that at durations of 4 hours or less lithium-ion has the lowest LCOS but as that duration is increased PSH and sulfur flow get cheaper and cheaper relative to lithium-ion. The 4-hour duration time is not a limitation but a breakeven duration time for lithium-ion to compete with longer-duration storage technologies. The author expects market forces like economies of scale to eventually increase that breakeven duration time to ultimately increase to somewhere between 8-12 hours. LCOE of PSH, however, is considered to be as low as it will ever get. Even with that limitation, PSH is expected to remain much more economical at durations longer than 8-12 hours. PSH also has a low levelized lifecycle cost. Compared to PSH, chemical batteries are much more resource-intensive. Chemical batteries require significant amounts of minerals. While lithium tech has the highest energy density among chemical batteries, the cost of lithium is higher than the costs of vanadium or sulfur. However, due to the lower energy densities of the latter two, more of those materials are required.

 

 

Advantages of Closed-Loop Pumped Storage Hydro

    

     Closed-loop PSH relies on pumping to and/or from man-made reservoirs rather than existing surface waters such as rivers or lakes. One advantage to this is that some of the siting and permitting challenges can be circumvented. This will vary by project and initial and periodic filling needs.

     A January 2021 paper in Joule: Global Atlas of Closed-Loop Pumped Hydro Energy Storage assesses that globally there are “616,000 potential sites identified with combined storage potential of 23,000 TWh.” The authors used digital elevation models to identify potential sites where paired reservoirs consisting of an upper reservoir and a lower reservoir, could be constructed. Typically, the reservoirs are connected via a tunnel where the pumps pump the water up and the turbine converts the flowing water to electricity. The potential sites were ranked according to the capital cost of storage, which is basically the cost to construct the two reservoirs.

 

 

Closed-Loop Pumped Storage Hydro has the Lowest Emissions Intensity of All Energy Storage Technologies

 

     A new paper in Environmental Science and Technology: Life Cycle Assessment of Closed-Loop Pumped Storage Hydropower in the United States, written by Daniel Inman, Gregory Avery, Rebecca Hanes, Dylan Hettinger, and Garvin Heath, all of NREL’s Strategic Energy Analysis Center, concludes that closed-loop PSH has the lowest carbon emissions intensity/lowest global warming potential of all energy storage technologies. NREL notes that they compared pumped storage hydropower against four other technologies: compressed-air energy storage (CAES), utility-scale lithium-ion batteries (LIBs), utility-scale lead-acid (PbAc) batteries, and vanadium redox flow batteries (VRFBs). They note that PSH and CAES are designed for long-duration storage, while batteries are designed to be used for shorter time durations. NREL reports: “In examining pumped storage hydropower, the researchers modeled their findings based on 39 preliminary designs from 35 proposed sites in the contiguous United States. The average closed-loop pump storage hydropower facility was assumed to have a storage capacity of 835 megawatts and an average estimated 2,060 GWh of stored energy delivered annually. The base scenario also assumed the electricity mix would entirely come from renewable technologies.” It should perhaps be pointed out again that longer-duration storage can store and discharge large amounts of renewables for a much longer time period and thus, it offers superior seasonal storage for variable renewables. Another way to say this is that longer-duration energy storage technologies such as PSH offer more energy services than chemical storage. One might even say that they can provide a kind of baseload storage service vs. a kind of intermittent storage service provided by a shorter-duration technology. The base case considers different sources of emissions including materials (mainly steel and concrete), electricity, transportation, and fuel.

 



SourceLife Cycle Assessment of Closed-Loop Pumped Storage Hydropower in the United States. Timothy R. Simon, Daniel Inman, Rebecca Hanes, Gregory Avery, Dylan Hettinger, and Garvin Heath. Environ. Sci. Technol. 2023, 57, 33, 12251–12258. Life Cycle Assessment of Closed-Loop Pumped Storage Hydropower in the United States | Environmental Science & Technology (acs.org)


The paper concludes that closed-loop PSH has a global warming potential of slightly less than half that of lithium-ion battery tech and considerably less than half that of vanadium redox flow battery tech, compressed air storage, and lead acid battery storage.

 



Source: Life Cycle Assessment of Closed-Loop Pumped Storage Hydropower in the United States. Timothy R. Simon, Daniel Inman, Rebecca Hanes, Gregory Avery, Dylan Hettinger, and Garvin Heath. Environ. Sci. Technol. 2023, 57, 33, 12251–12258. Life Cycle Assessment of Closed-Loop Pumped Storage Hydropower in the United States | Environmental Science & Technology (acs.org)

 

Innovations in Pumped Storage Hydro

 

     While in general it is thought that LCOS for PSH won’t get any cheaper there are potential innovations that could change that conception, especially under certain situations. The U.S. Dept. of Energy’s HydroWires published a study in April 2022 that evaluated 12 technology innovations for PSH including the following:

 

• Small PSH with reservoirs of corrugated steel and floating membranes;

• PSH using submersible pump-turbines and motor-generators;

• Geomechanical PSH;

• Hybrid PSH and wind plant;

• Integrated PSH and desalination plant;

• Underground PSH using tunnel-boring machines for storage excavation;

• Underground mine PSH;

• Open-pit mine PSH;

• Hybrid modular closed-loop scalable PSH;

• Pressurized vessel PSH;

• Thermal underground PSH; and

• High-density fluid PSH.

 

The study is focused on innovations that provide construction cost savings and reduce construction time while acknowledging that these technologies are at different technology readiness levels (TRLs). The most promising PSH technologies were found to be submersible pump-turbines and motor-generators, geomechanical PSH, open-pit mine PSH, and hybrid PSH technologies. The study also considered adding PSH capabilities to existing hydroelectric dams and innovative new construction methods, including new excavation techniques and modular dam construction methods. Using mines for PSH takes advantage of  past mining as previous excavation.



Source: A Review of Technology Innovations for Pumped Storage Hydropower. April 2022. Vladimir Koritarov, Jonghwan Kwon, Quentin Ploussard, Patrick Balducci. HydroWires. U.S. D.O.E. A Review of Technology Innovations for Pumped Storage Hydropower (anl.gov)


     This study is very interesting and perhaps will be the subject of another post in the future.

 

References:         

Hydropower explained: Where hydropower is generated. Energy Information Administration. 2023. Where hydropower is generated - U.S. Energy Information Administration (EIA)

Closed-loop pumped hydro least likely storage tech to contribute to global warming: NREL. Kavya Balaraman. Utility Dive. August 22, 2023. Closed-loop pumped hydro least likely storage tech to contribute to global warming: NREL | Utility Dive

News Release: NREL Analysis Reveals Benefits of Hydropower for Grid-Scale Energy Storage. National Renewable Energy Laboratory. August 17, 2023. News Release: NREL Analysis Reveals Benefits of Hydropower for Grid-Scale Energy Storage | News | NREL

Life Cycle Assessment of Closed-Loop Pumped Storage Hydropower in the United States. Timothy R. Simon, Daniel Inman, Rebecca Hanes, Gregory Avery, Dylan Hettinger, and Garvin Heath. Environ. Sci. Technol. 2023, 57, 33, 12251–12258. Life Cycle Assessment of Closed-Loop Pumped Storage Hydropower in the United States | Environmental Science & Technology (acs.org)

Closed-Loop Pumped Storage Hydropower Motivations and Considerations. National Hydropower Association. Closed-Loop Pumped Storage Hydropower Motivations and Considerations - National Hydropower Association

Lithium-Ion Energy Storage Cost Vs. Pumped Hydro Or Flow Battery Cost Are Dependent On Time. Nate Brinkerhoff. Clean Technica. April 25, 2020. Lithium-Ion Energy Storage Cost vs. Pumped Hydro Or Flow Battery Cost Are Dependent On Time - CleanTechnica

Projecting the Future Levelized Cost of Electricity Storage Technologies. Oliver Schmidt, Sylvain Melchior, Adam Hawkes, Iain Staffell. Joule. Volume 3, Issue 1, 16 January 2019, Pages 81-100. Projecting the Future Levelized Cost of Electricity Storage Technologies - ScienceDirect

Global Atlas of Closed-Loop Pumped Hydro Energy Storage. Matthew Stocks, Ryan Stocks, Bin Lu, Cheng Cheng, Andrew Blakers. Joule. Volume 5, Issue 1, 20 January 2021, Pages 270-284. Global Atlas of Closed-Loop Pumped Hydro Energy Storage - ScienceDirect

Closed-Loop Pumped Storage Hydropower Resource Assessment for the United States: Final Report on HydroWIRES Project D1: Improving Hydropower and PSH Representations in Capacity Expansion Models. May 2022. Closed-Loop Pumped Storage Hydropower Resource Assessment for the United States. Final Report on HydroWIRES Project D1: Improving Hydropower and PSH Representations in Capacity Expansion Models (nrel.gov)

A Review of Technology Innovations for Pumped Storage Hydropower. April 2022. Vladimir Koritarov, Jonghwan Kwon, Quentin Ploussard, Patrick Balducci. HydroWires. U.S. D.O.E. A Review of Technology Innovations for Pumped Storage Hydropower (anl.gov)

Pumped hydro: Water batteries for solar and wind power. International Hydropower Association. Pumped storage hydropower

Pumped Storage Tracking Tool. International Hydropower Association. Pumped Storage Tracking Tool: International Hydropower Association

Friday, August 25, 2023

The Tragic Maui Fires: Prioritizing Adaptation and Resilience Can Save Lives

    

    There seem to be two competing narratives for the build-up to the tragic Maui wildfires and the failure to stop them. One is that heat and drought caused by climate change were just too much to overcome. The other is that Hawaii’s emergency management services, utilities, and governments were underprepared, underfunded, and slow to provide resilience and fire prevention measures.

     With the heat, the drought, and possibly the hurricane, one can surmise that climate change was a contributing factor, but very likely not a primary factor in the fires. On the other hand, there is absolutely no doubt that the proliferation of flammable non-native grasses and shrubs known to potentially accelerate fires was a major factor.

     While left-wing outlets emphasize the climate change influences on the tragedy, right-wing media outlets are having a field day emphasizing the other, much stronger narrative. Progressives are already complaining about “disaster capitalism” all the while proliferating their own “disaster anti-capitalism.” All this is frustrating to moderates, particularly people among the moderate left. The simple fact is that even if the fires were caused by climate change only (which they obviously were not), the way to prevent them is not by increasing energy transition funding, which would take decades to implement and many more decades to start having an effect on wildfire proliferation. The way to prevent them is to significantly increase funding and work as soon as possible specifically for wildfire prevention. Major funding has been in the works in Maui since 2022 but it obviously did not happen quickly enough.

     The source of the fire is currently being investigated with investigators looking into downed power lines and possibly electrical equipment near a substation as a possible ignition source. People have complained that the electric company should have turned off power to vulnerable areas, especially with the high winds likely to knock down power lines.

     It is fairly certain that climate change does indeed make fires more likely, possibly bigger ones. Fires have definitely gotten bigger in the U.S. The trendline quite clearly shows that the total annual acreage burned by wildfires has roughly tripled from 1985 through 2022. However, the trend on the number of wildfires in the U.S. actually shows that there are generally fewer fires since 1985. The trendline shows a 20% drop in fires from 1985 through 2022. Fires have not only gotten bigger they also have been more destructive, causing more deaths and property damage. This is partly due to more building in fire-prone areas. It is also partly due to inadequate fire prevention. The proliferation of fire-prone non-native grasses and shrubs is partially responsible for the bigger fires. This has been the case in California and Hawaii in particular. Climate change is also partially responsible for bigger fires due to higher temperatures and more and longer droughts. Climate change is probably more directly responsible for longer fire seasons in some areas. A certain percentage of that climate change is anthropogenic climate change from fossil fuel emissions, agricultural emissions, and net deforestation. Some of the climate change is also probably natural climate change.   

 



Source: Wildfires in the United States 101: Context and Consequences. Matthew Wibbenmeyer and Anne McDarris. July 30, 2021. Resources for the Future. Wildfires in the United States 101: Context and Consequences (rff.org)





Data Source: National Interagency Fire Center




Data Source: National Interagency Fire Center



     Clearly, more resources need to be put into fire prevention in fire-prone areas. That is the right prescription for the malady of wildfires. Addressing climate change by restricting fossil fuels and mandating renewable energy won’t affect wildfire proliferation for decades, likely many decades, whatever the degree of influence climate change has on wildfires. Clearly, the priority for funding and action needs to be on fire prevention. However, when we look at funding levels it is obvious that fire prevention funding and action is inadequate, especially in known vulnerable areas such as Maui. Instead, Hawaii has underfunded fire prevention and has been increasing investment in renewables. Here is another concern that just occurred to me. It is well-known that higher penetration of intermittent wind and solar on power grids will require a massive increase in power transmission line buildouts, with some estimates that 100% renewables scenarios will require a tripling of the size of the U.S. transmission system. That means many more power lines and since downed power lines are considered a major ignition source for wildfires, does that mean more wildfires as well? It’s something to think about, perhaps. Another thing that should perhaps be mentioned is that since wildfires are an enormous source of both air pollution (dangerous particulate pollution) and CO2 emissions, effective fire prevention can directly reduce both of these things deemed harms to society. This is yet another reason fire prevention should be prioritized.

 

 

Hawaii’s Isolation and Dependence on the Most Emissions-Intense Fossil Fuels for Electricity

 

     In my 2021 book, Sensible Decarbonization, I covered Hawaii’s unsustainable high-carbon energy mix and what they should do about it. I argued that they should have moved to LNG years ago and still should. Here is what I wrote about Hawaii:

 

Hawaii has the highest electricity prices in the US, partly due to its island isolation. Even though it has a high degree of solar generation (over 11%) and wind (about 6%), over 61% comes from petroleum and over 12% from coal. Coal and petroleum make up over 74% of generation (through 2017). One might ask why there is no natural gas via LNG providing power in Hawaii. Hawaii has the highest cost of living among all US states for a variety of reasons, one being its isolation. Another is its energy prices. Hawaii has the lowest natural gas use of all US states.”

     “Hawaii Gas had explored the possibility of importing LNG from 2012, producing a report recommending it in 2016 to help with high energy costs as well as a “bridge” to plans for zero net carbon by 2045. Hawaii was the first state to make such a declaration. Environmentalists opposed LNG, falsely claiming that life cycle greenhouse gas emissions were worse than coal, citing methane emissions. Plans for an LNG terminal were canceled in 2016. Thus, by 2020 natural gas makes up 0% of Hawaii’s electricity. Coal makes up 13%, petroleum makes up 66%, and renewables make up 16%. Now coal and oil make up nearly 80% of Hawaii’s electricity compared to 74% in 2017. Hawaii has the highest electricity prices in the US. Obviously, they are seeing LNG development as a stranded asset issue but if they would have built the terminal in 2016 and a combined cycle natural gas plant or two, their citizens would likely be paying much less for electricity today, their air would be cleaner, and their carbon emissions would have dropped considerably.”

     “In some ways, Hawaii is a test case. Hawaii has a great solar resource which makes it more economical. The high electricity prices make solar and wind more competitive with oil, but they have yet to tackle grid integration costs which would likely make electricity costs rise even further as more renewables penetrate Hawaii’s power grid. Hawaii had the highest net carbon intensity gain from 2013-2018 and was one of only three states, with New Jersey and Vermont, to have carbon intensity gains. Of course, Hawaii has a small population, about 1.4 million people, so it is a small piece of the puzzle, smaller than the seven or eight most populated US cities. 

      “Recently, Maui joined a list of cities suing Big Oil for climate change effects, in this case sea level rise. Of course, we know that sea level had been rising before Industrial Age CO2. It may be accelerating now due to anthropogenic climate change, but it is difficult to measure the contribution. Maui has also seen an increase in heat waves and wildfires which were noted in the suit. Such suits are basically frivolous. And ironically Hawaii continues to burn oil and coal rather than cleaner natural gas to make 80% of their electricity. It is another case of suing the hand that powers you.”  

 

     Since then, Hawaii’s energy mix has changed by a few percentage points. The latest data from 2021 shows oil and coal at 77.2% of electricity, but it is still much higher than it was in 2017. Solar and wind have actually dropped in percentage of the electricity mix. The idea of a state with one of the highest electricity carbon emissions intensities being the first to make an aggressive net zero commitment is rather ‘head-scratching’ and shows a dangerous disconnect between aspiration and reality. Ultimately, though, Hawaii’s energy mix has little to do with fire proliferation except perhaps with the allocation of funds toward wildfire prevention being possibly diverted to green energy initiatives. That is the prioritization argument for allocation to adaptation to extreme weather events, whether or not influenced by climate change, over allocation for green energy initiatives.  

  


 

Hawaii's Electricity Mix By Energy Source, 2021. Source: Statista

 


Hawaiian Electric’s Lack of Preparation and Over-Emphasis on Anthropogenic Climate Change

 

     Right-wing outlet the Washington Examiner asserted from a report in Wall Street Journal that “… Hawaiian Electric knew for years that the combination of unsecured power lines and invasive dry brush was causing a huge spike in wildfires, but instead of investing resources in securing power lines and clearing brush, the company spent millions trying to meet Democratic Party-created renewable energy mandates instead. It was known in 2019 that Maui faced a growing wildfire risk, with more fires occurring each year. One reason is certainly the proliferation of dry fire-prone non-native invasive grasses and shrubs: “After the 2019 wildfire season, Hawaiian Electric even commissioned a report, which concluded that the utility should do far more to prevent its power lines from setting invasive grasses on fire. Since that report less than $245,000 was spent on wildfire projects.”

     Apparently, on the crazy end of the spectrum, conspiracy theorists have been asserting that lasers or directed energy weapons were used to start the Maui fires, with one person who studies climate disinformation saying that those crazy assertions were aimed at discrediting climate science. In the past conspiracy theorists have blamed such weapons as well as Black Lives Matter activists and arsonists for fires. There is very good evidence, however, that arsonists have and do start wildfires, with many convictions, so that is not so crazy. Indeed, most wildfires are ignited by human activity including unextinguished campfires, discarded cigarettes, illegal or ill-advised burning, arson, and downed power lines and other electrical equipment. One big destructive fire was determined to be started by a lawn mower hitting a rock which threw a spark to start the fire. Of natural causes of wildfires, lightning strikes are the most common, and while they may be slightly more common due to climate change, that influence is likely to be negligible.   

     The Wall Street Journal pointed out a 2014 study by Hawaiian fire researchers that concluded Lahaina on Maui was at extremely high risk for fires due to parched grasslands, steep terrain, and frequent winds. In 2020 passing of Hurricane Lane remnants similar to the 2023 passing of Hurricane Dora remnants fanned the flames of fires, so that risk was well known as well. Some improvements were made such as thinning brush and educating landowners about the risks. However, others, like ramping up emergency-response capabilities have lagged due to funding inadequacies and competing priorities. After studying power line vulnerabilities with drones, Hawaiian Electric submitted a request for $189.7 million in 2022 for power grid maintenance, but that request was still being processed when the August 2023 fires raged. 

     The area that burned is a historically important center for indigenous Hawaiians and pledges have been made to allow these groups to have great influence over rebuilding. While few would argue with that, I would note that much like indigenous Native Americans on the mainland, Native indigenous Hawaiians have been unduly influenced by Progressive pundits calling for Green New Deals and exhibiting anti-fossil fuel rhetoric. This is echoed by all the politicians on the political left predominantly blaming climate change for the fires. Governor Jay Inslee of Washington and California’s Gavin Newsome have long referred to wildfires as “climate fires.” This is not an accurate assessment. Virtually every news story about wildfires will mention climate change many times with perhaps a passing reference to the more pressing concerns and actually fixable nature of the other causes. Hawaii’s governor even called it a fire hurricane, an unprecedented new form of climate change demon. Also a few days ago, climate scientist and activist James Hansen came out with a declaration that basically said: “I told you so.” Progressives are using the Maui fires to tell Biden to declare a climate emergency. These kinds of reactions to the tragedy are ineffective in actually solving the problem and are basically inappropriate politicization. In contrast, the right-wing Daily Caller’s Kristen Walker reports: “With only 15 inches of annual rainfall, compared to the eastern side’s 300, Lahaina’s surrounding grassland vegetation is primed each summer to burn rapidly due to the lack of moisture.” She also had a comment from a climatologist: Natural climate variability in Hawaii is very large and picking out the human-induced climate change signs is really difficult,” Abby Frazier, a climatologist at Clark University in Massachusetts, says. “The main factor driving the fires involved the invasive grasses that cover huge parts of Hawaii, which are extremely flammable.”

     Another counter-intuitive idea (there seem to be quite a few around fires) is that wet seasons on Maui that have more moisture actually feed fires in dry seasons. This is because more of these non-native grasses will grow and proliferate during wet seasons, setting up higher fuel stores when they dry out in the summer. Walker reports again: “According to the National Oceanic and Atmospheric Administration, wildfires actually have the “lowest confidence” among natural disasters that researchers attribute to climate change.” The point of all this is that it is a self-centered politicized cop-out to continually over-emphasize the influence of anthropogenic climate change on wildfires.

     I listen to NPR a lot in my car and climate change is mentioned a lot and I mean a lot. A story about wildfires would typically mention it a half dozen times. However, there was one story, albeit a short one, on All Things Considered that did not mention climate change at all. It was an interesting story where a reporter, Jeva Lange, conveyed information and data from the Wildland Fire Lessons Learned Center.

It was noted that the Maui fires were mainly grass fires. Most wildfires are grassland fires according to a study of fires from 1984-2020 on the West Coast. That is counterintuitive since we often think of wildfires as forest fires. Only 35% of wildfires were forest fires. Grass fires burn fast and are often underestimated. European grasses are spreading in Maui and on the West Coast. These grasses can triple susceptibility. The largest fires in Nevada and Texas history were grassland fires. There is a need to stop prioritizing suppression and let fires burn, she noted. Other risk mitigation methods include strategic grazing to keep grasses short and keeping a buffer of agricultural land around communities.

     A 2021 report by Maui County had several recommendations for fire prevention. These included creating many more fire breaks, fire prevention education, better management of abandoned sugar cane fields, more inspection and better maintenance of power lines, and perhaps most importantly, control and replacement of non-native grasses:

 

Reduction of alien plant life that serves as fuel. Grasses serve as tinder

and rapidly invade roadside shoulders.

 

Action: Implement an aggressive plan to replace these hazardous fuel

sources with native plants to reduce combustible fuel while increasing

water retention.

  



Source: County of Maui: Cost of Government Commission Report on Wildfire Prevention and Cost of Recovery on Maui. July 2021. Report-on-Wildfire-Prevention--Cost-Recovery-on-Maui---Part-1-Report--Exhibits-A-B-33-MB (mauicounty.gov)



     These recommendations from these important reports, sounding the alarm since 2014, unfortunately, were not implemented in a timely manner and at the levels needed to prevent this largely preventable tragedy and loss of human life and property.

     

Western Maui’s History of Colonialism is a Factor in the Fires and Current Water Rights Disputes

     One of Hawaii Governor Josh Green’s first comments after the fires was this: “It’s important that we’re honest about this. People have been fighting against the release of water to fight fires. I’II leave that to you to explore.” Green noted that “we tipped too far” toward water rights for nature and natives.

     Pineapple and sugarcane plantations did indeed divert the abundant mountain waters and turned a wet environment downstream and downslope into a dry environment. Hawaiian historian Kamana Beamer blamed extractive, unfettered capitalism. Although I don’t like to admit it, in this case, that is probably correct. Another important factor was livestock. Plants like guinea grass, introduced as livestock forage now cover a whopping 25% of Hawaii’s surface area. This may well be the biggest factor in increasing vulnerability to fire. Many native plants and trees were removed to make way for the plantations and livestock forage areas. The new thirsty crops required lots of water. These replaced dryland crops like breadfruit trees and banana trees. Lahaina’s original name referred to the shade of breadfruit trees. Developers and land companies diverted the irrigation water of the former plantations to new resorts and subdivisions to provide water for Maui’s tourist economy. Resorts, some with pools and large golf courses (known for massive water needs), are the area’s biggest water consumers. Although Native Hawaiians unanimously won a water rights dispute in 2021, giving special designation for the Lahaina aquifer sector to be used for Maui residents. Governor Green suspended this temporarily after the fires. This led to fears about land developers taking back more water and accusations of disaster capitalism. I doubt that is what is happening but in this case, those accusations have some justification. A few new fires have appeared since then. There is a need in the area for stream restoration and wetlands restoration to try and help restore a clearly damaged ecosystem.


 There was outrage and accusations of colonialism and disaster capitalism were levied against the Democrat governor. There is indeed a past history of colonialism in the area and the upending of functional ecosystems once present in the past by a sugarcane farming boom in the late 1800s. Water was diverted from mountain streams to the sugarcane plantations and native Hawaiian activities such as fishponds and terraced taro fields did suffer. Tourism has long replaced sugarcane as the dominant industry in Maui. One land developer insinuated that Maui firefighters did not have enough water to fight the blaze but that looks to be untrue as firefighters blamed melted pipes and powerless pumps for the loss of water pressure. There probably could have been better preparation for these contingencies as well.


Overall, Right-Wing Coverage More Realistic Than Left-Wing Coverage


     This post also shows that left-wing media’s obsession with climate change is de-emphasizing the most effective ways to prevent wildfires and reduce damage from wildfires. I think the left-wing media outlets need to examine this obsession and strive to be more factual and practical in helping to prevent these tragedies. In a way, this over-emphasis on climate change is a kind of misinformation, unfortunately. The right-wing media outlets, while vindictive, have done a much better job with this story. I say that from a moderate left perspective.  

 

 

References:

Climate activists are getting people killed. Conn Carroll, Washington Examiner. August 17, 2023. Climate activists are getting people killed (msn.com)

Hawaii wildfires stoke climate denial, conspiracy theories. AFP. August 18, 2023. Hawaii wildfires stoke climate denial, conspiracy theories (msn.com)

Hawaii Officials Were Warned Years Ago That Maui’s Lahaina Faced High Wildfire Risk. Dan Frosch and Jim Carlton. The Wall Street Journal. August 12, 2023. Maui Fire: Hawaii Officials Warned Years Ago Lahaina Was at Risk - WSJ

WALKER: Americans Deserve Better Than Climate Change Lies. Here’s What Really Caused The Maui Wildfires. Kristen Walker. The Dailey Caller. August 21, 2023. WALKER: Americans Deserve Better Than Climate Change Lies. Here’s What Really Caused The Maui Wildfires (msn.com)

‘Disaster capitalism at its finest’: Fights over water amid west Maui’s charred ruins ignite new fears. Bill Weir. CNN. August 21, 2023. ‘Disaster capitalism at its finest’: Fights over water amid west Maui’s charred ruins ignite new fears | | kvoa.com

When it comes to wildfires, beware of dry grass – that’s where most occur. Gurjit Kaur, Patrick Jarenwattananon, Ailsa Chang. NPR. All Things Considered. August 22, 2023. When it comes to wildfires, beware of dry grass — that's where most occur : NPR

Wildfires in the United States 101: Context and Consequences. Matthew Wibbenmeyer and Anne McDarris. July 30, 2021. Resources for the Future. Wildfires in the United States 101: Context and Consequences (rff.org)

County of Maui: Cost of Government Commission Report on Wildfire Prevention and Cost of Recovery on Maui. July 2021. Report-on-Wildfire-Prevention--Cost-Recovery-on-Maui---Part-1-Report--Exhibits-A-B-33-MB (mauicounty.gov)

Sensible Decarbonization: Regulation, Risk, and Relative Benefits in Different Approaches to Energy Use, Climate Policy, and Environmental Impact. Kent C. Stewart. Amazon Publishing, 2021.

How 19th-century pineapple plantations turned Maui into a tinderbox. Claire Wang. The Guardian. August 27, 2023. How 19th-century pineapple plantations turned Maui into a tinderbox | Hawaii fires | The Guardian

 

Wednesday, August 23, 2023

Drone Surveying and Inspection for Renewables: Lower Costs, Faster Results, and Better Data

     Unmanned aerial vehicles (UAVs), or drones, are used in many industries and are particularly applicable to industries that are spread out through land space, air space, or ocean space. The utility industry uses drones for the inspection of power lines and facilities. The oil and gas industry uses drones to detect methane leaks along pipelines. Agriculture uses drones to assess crop health and issues. Drones can inspect to detect issues at large construction or energy projects. They can be used to collect data over large areas and in remote areas. Drone applications overlap with robotics and AI applications. Robots clean solar panels in dry climates where dust is a common problem. Robots and AI can pick fruit, apply fertilizer, and water plants with precision and speed.

     Many small innovations over the past several years have made the deployment of utility-scale solar projects more efficient, bringing costs down. Here I will be focusing on cost-savings drones and technologies carried by these drones.

     Engineering firms can help drive down costs by applying and combining new technologies. One place this can happen is on the front end of renewable energy projects, at the surveying stage. Before a utility-scale solar and wind farm begins construction, surveyors create high-quality maps that developers then use to plan the layouts of their facilities. Creating an industry-standard American Land Title Association (ALTA) survey typically involves conventional surveying to identify boundaries, utilities, and easements. It may also involve photogrammetry and light detection and ranging (LiDAR) sensors to map topographic and planimetric features. In recent times the use of drones to carry and conduct LiDAR surveys along with GPS technology has sped up the surveying process while also making it more accurate, particularly with respect to topographic and planimetric information.

     Just in the last few years, some past problems with LiDAR conveyed via drones have been worked out so that this can now be done with a higher degree of precision. The problems involved designing smaller sensors that were just as accurate as larger ones used on manned aircraft. Another issue that was worked out involved “trajectory files that depend on GNSS measurements and the Internal Measurement Unit (IMU), which records the roll, pitch, and yaw of the aircraft’s sensors,..” This allows for more precision in mapping. Other improvements over the last few years include higher-resolution cameras, longer battery life, and lighter payloads. More satellites now feed into global navigation systems. These all improve accuracy and speed and lower cost. Drones can also conduct surveys in an automated fashion programmed by the surveyor, with a pilot around mainly to avoid crashes. With these microdrones, surveys can be done in a fraction of the time and at a fraction of the cost compared to the past.  A company called Microdrones began offering surveying and LiDAR in a microdrones-as-as-service format in 2020. They offer a monthly subscription service that can offer cost savings for many customers. They have different data processing and post-processing that can be selected by the customer based on the needs of the project. Engineering firms are also buying drone fleets to add drone surveying to their repertoire. Solar companies can also bring drone surveying in-house.

     Drones can also be used to monitor renewable energy systems to detect issues. They can survey regions to collect wind data or solar radiation data. They can be used to detect and evaluate issues with wind turbines to reduce worker time and risk. They can also help workers design better repairs. Drones can monitor and detect solar panel malfunctions at big solar farms, also reducing worker on-site time requirements. Some drones can even be powered or partially powered by solar and wind. Drone-enabled technologies can reduce O&M costs and improve O&M significantly. The area around solar panels can get very hot, especially in desert areas. The drones and their payloads need to be built to withstand these temperatures.




Source: Incorporating Drones: Solar Energy Operations. (Webinar) DJI. Measure. AES. web player (djivideos.com)




Source: Incorporating Drones: Solar Energy Operations. (Webinar) DJI. Measure. AES. web player (djivideos.com)



     Drones can streamline solar farm inspection by quickly identifying defective panels and cables. This is much more efficient than using people with handheld thermal imagers. According to DJI Enterprise inspecting solar farms involves four basic steps: assessment, flight planning, data collection, and data organization and processing. Flight planning involves optimizing battery power. Data processing involves using photogrammetry software to reconstruct RGB color data (orthomosaics) and thermal maps and adjustment of positioning with Ground Control Points. The data can then be fed into GIS software. Then the maintenance team can look for anomalies that indicate potential faults. Aerial images can be interpreted to assess panel health. Heat anomalies across cells, strings, or panels can be caused by multiple issues such as “delamination, cracks, dust, or internal issues such as the inability to connect to a panel due to an inverter or cable failure.” One drone inspector noted that with two drone teams, they could inspect 617 acres in a single day compared to three or four months to do it manually. This makes inspection incredibly efficient and reduces human error. Early detection of faults can prevent major system failures and ensure output. While thermal imaging can lead to fault detection, RTK modules can lead to precision mapping at the centimeter level. Both of these technologies can be very efficient and very effective when carried by drones.

     The graphic below shows the full scale of potential drone-enabled applications for utility-scale solar farms.

 



Source: Incorporating Drones: Solar Energy Operations. (Webinar) DJI. Measure. AES. web player (djivideos.com)


References:

Surveying technology moving the needle for solar PV deployment. July 31, 2023. Solar Builder Magazine. Technology moving the needle for solar PV deployment (solarbuildermag.com)

Drone Usage for Renewable Energy Development and Maintenance. Jane Marsh. September 30, 2022. Bioenergy Consult. Drone Usage for Renewable Energy Development and Maintenance (bioenergyconsult.com)

Need laser-focused C&I solar design? Time to check out LIDAR. Builder Magazine. July 17, 2023. Need laser-focused C&I solar design? Time to check out LIDAR | Solar Builder (solarbuildermag.com)

Microdrones as a service? Professional drone LiDAR and surveying more accessible than ever. Chris Crowell. Solar Builder. May 19, 2020. Microdrones as a service? Professional drone LiDAR and surveying more accessible than ever | Solar Builder (solarbuildermag.com)

Everything Yoe Need to Know About Drones for Your Solar Farm. DJI Enterprise. Everything You Need to Know about Drones for Your Solar Farm (dji.com)

Incorporating Drones: Solar Energy Operations. (Webinar) DJI. Measure. AES. web player (djivideos.com)

Monday, August 21, 2023

Book Summary and Review: Best Things First: The 12 Most Efficient Solutions for the World’s Poorest and Our Global SDG Promises. By Bjorn Lomborg. Copenhagen Consensus. 2023.

 

     I read Lomborg’s 2020 book False Alarm, which was about toning down the crisis mode around potential climate change impacts, understanding that the problem is not as bad as we think, and promoting climate resilience and adaptation over near-term emissions reduction because it has more immediate benefits. It was a good book. However, this book is much better and more relevant to solving global problems and mitigating human suffering. While Lomborg has long been a darling of right-wing pundits due to his calls to deprioritize climate change, here he is showing with great skill what we can and should do as priorities. He is an economist and head of the Copenhagen Consensus, a group of economists that tackles the economic aspects of solving global problems. This is really a fantastic book that summarizes the most efficient ways available to help the greatest number of people the fastest. It is tailored for poor countries, both low-income countries, and low-middle-income countries. Lomborg has also written several boos about prioritizing problem-solving in specific countries and regions including Ghana, Rajasthan, Andhra Pradesh, Haiti, and Bangladesh. He is kind of a “guru of prioritization.”

     The economic methodology used in the book can be complicated in terms of details but is simple in terms of calculated results. The methodology is that of benefit-cost ratio. The benefits and costs are determined in U.S. dollars, discounted at an annual rate of 8%, and total benefits are divided by total costs to arrive at a benefit-cost ratio (BCR). For many topics, this also requires determining the statistical value of a human life, which can vary considerably by countries’ wealth and means. There will be more about methodology as I summarize and review the Appendix which covers this topic.

     The book is the culmination of two decades of work by the Copenhagen Consensus in prioritizing global goals. The UN’s sustainable development goals (SDGs) run from 2016 to 2030. Now, in 2023, we are at the halfway point, and we are far behind schedule on many of these goals. This book prioritizes by offering 12 of the most efficient policies we can focus on to improve lives in the poorer parts of the world. These policies, according to the many researchers involved in this project, offer the best BCRs:

 

For about $35 billion per year, we can save 4.2 million lives annually, and we can make the poorer half of the world more than a trillion dollars better of each and every year.”

 

The book is aimed at politicians and wealthy philanthropists, those who can appropriate funds for these policies.

 



 

The Success of the UN Millenium Development Goals

 

     Lomborg hails the UN’s Millenium Development Goals, created in 2000 by UN Secretary-General Kofi Annan and his aides, along with the IMF, the OECD, and the World Bank. The result was eight goals and 18 specific targets, with a deadline of the last day of 2015. Investment grew significantly, and most of the goals were either achieved or came reasonably close. The MDGs helped to save between 10 and 19 million children’s lives, according to a study in 2018. Even though all MDG goals were not achieved, the effort was incredibly successful.

 

The Sustainable Development Goals: Too Much Input and Too Many Promises, According to Lomborg

     In contrast to the MDGs, the SDGs, according to Lomborg, are a sprawling set of goals that have not been properly prioritized. He thinks there were too many issues included – 1,400 different suggested promises, 169 targets across 17 goals or themes – much greater in scope than the MDGs. He criticizes some of these goals such as “promoting sustainable tourism, boosting organic foods, or green public spaces for disabled people” as well-intentioned and important but not in league with saving lives and slowing hunger, disease, and malnutrition. One might say we need to focus much more on the lower rungs of Maslow’s hierarchy of needs. Other goals he criticizes as too vague and others yet as too costly. Interestingly, he notes that the MDGs resulted in a doubling of global aid, but the SDGs showed just a slight uptick in spending. Data suggests that the SDGs are way behind trajectories, and were even before Covid, which actually caused some backtracking in some areas. The data suggests that we will be half a century behind on achieving many of the SDG goals, and although some goals will be met, those are often not the goals most in need by poor countries.

 




Phenomenal Benefits at the Lowest Cost

     Prioritizing gives the best benefits at the lowest costs. According to Lomborg, the Copenhagen Consensus has been identifying the phenomenal policies that do just this for two decades in collaboration with 100 of the world’s best economists and several Nobel Laureates. They refined this process to come up with this book. The result is the 12 policy solutions that follow. The methodology involves arriving at the statistical value of a human life for one year, such as saving one child from dying of malaria or postponing the death of one elderly person. The poorer half of the world is the focus of the book since that is where policies can do the most good at the least cost. They analyzed 100 different SDG proposals to arrive at the 12 most efficient ones. The metric they used is those policies that could deliver at least $15 of social benefits per each dollar spent, or a BCR of 15. Lomborg did note after meeting with many countries’ UN ambassadors, unfortunately, that there was some pushback as some governments seemed more interested in promoting popular policies over the most effective ones. He also noted there were some changes since 2015 of policies’ BCRs so some fell below a BCR of 15 and others rose above that level. Even some very good policies like providing clean drinking water and providing sanitation stayed well below a BCR of 15. Other policy proposals like a global carbon tax only delivered a BCR of 2. This is because they take so long (decades to many decades) to have an effect. Lomborg argues that these 12 policies have a combined BCR of 52 and that the total annual cost for them would be about $35 billion. This amounts to about 3% of current global climate spending, about 1.67% of global military spending, or about 1% of global education spending. It is quite do-able, he notes. We should do these things now because they will have the most impact at the lowest cost in the shortest amount of time. He argues that we did it successfully before with the MDGs and so we should do it again by prioritizing the SDGs.


     The 12 best policies identified are as follows: Tuberculosis, education, maternal and newborn health, agricultural research and development, malaria, e-procurement, nutrition, land tenure security, chronic diseases, trade, child immunization, and skilled migration. Each chapter is based on a specific policy paper with multiple authors and advisors. Each is published in Cambridge University’s Journal of Benefit-Cost Analysis, with a link given to the paper after each chapter. I will summarize each of these policies below.

 




1)     Tuberculosis

     Tuberculosis is very treatable and virtually non-existent in rich countries, and yet it still kills 1.4 million people a year in poor countries, killing more people than Covid in 2022. With specific strategies and more funding most of these needless deaths can be avoided. According to one study, TB has killed more people in the last 200 years than smallpox, malaria, the plague, influenza, cholera, and AIDS combined, about 1 billion people. Thus, it has likely been the most lethal pathogen of all time. TB is caused by a bacterium and is spread by coughing. It is an urban disease, spread by close contact. TB death rates declined drastically in the rich world from 1850-1950 due to better living standards, better nutrition, basic public health measures, isolation, and likely some herd immunity. A vaccine developed in the 1920’s and antibiotics like streptomycin, discovered in 1944, helped to nearly eliminate it. However, there was a resurgence with the AIDS epidemic, where severely weakened immune systems led to more TB cases, particularly in South Africa. Most TB deaths now, however, occur in India. Even though the death rate per 100,000 people has dropped fourfold in the past 75 years, with the growth in population, TB stilled kills half a million people in India annually.

     The aim of the SDGs is to eliminate TB by 2030. We are not on target to do that at current spending levels and with current strategies. Covid restrictions led to less people being diagnosed with TB and an extra 150,000 deaths in 2021.

     Lomborg notes that there are two challenges to slowing TB: 1) difficulty in getting diagnosed people to treatment – medicine must be taken every day for four to six months; and 2) cost of treatment – even though the treatment is basically free, there are additional costs like getting to treatment, paying for private sector treatment due to convenience and timesaving. People lose weight and need additional nutritional support. Many lose their jobs. Some are stigmatized, as in Kenya. In Mali there are significant financial costs for treatment. Partial cures due to not taking medicine long enough have led to a drug-resistant strain of TB. Curing this strain takes much longer, 18-24 months, which creates additional hardships. Diagnosing the disease is also a challenge. In 2021, about 60% of TB was identified, a major improvement, but still not enough. About 45% of undiagnosed cases lead to death. Thus, one need is for more testing and screening of vulnerable populations. These solutions can save many lives. People in homeless camps, slums, refugee camps, prisons, and migrants are among the most vulnerable populations. Rapid gene testing needs to replace less effective sputum microscopy for diagnosis. It is way more accurate and has dropped in price in recent years.

     The strategy for lowering cases and deaths from TB includes finding and diagnosing more of the 4 million annual cases that are missed. Spending on TB has not grown for many years (flat since 2018) and increased spending would do a lot to save these lives. Total spending in 2022 was $6 billion. Modeling suggests spending an average of $5 billion more annually, with higher amounts in the early years resulting in less spending in later years as successes are achieved.

     Much of the cost will go to better screening and testing. Other costs will go to incentives to complete treatment such as food, clothing, and gift cards, nutritional supplements, and subsidized bus or taxi travel to appointments. The goal is for 50 million more people to get access to good treatment over the next seven years. Models indicate this could result in a 90% death reduction to 2030. Up to 1.2 million lives could be saved in that short time period. The BCR given for TB from 2023-2050 is 46, a very good return (of human lives) on the investment.

 

 

2)     Education

     The first observation given here is that despite increased spending children in poor countries are failing to learn basic skills such as reading and math. Level of education is a direct determinant of whether a country will be rich or poor. Rich countries spend trillions on education. He notes that today, 86% of the world’s adults are literate, compared to just 12% in 1800. The MDGs were very helpful in closing education gaps. The problem, says Lomborg, is that while more children are going to school, many of them are not learning very well – not achieving the Minimum Proficiency Level - for a variety of reasons. Simply spending more money per student has not worked to improve learning. He notes that learning scores in sub-Saharan Africa increased just 5% from 2000 to 2015. While significant successes have been achieved with much higher enrollment, success is lagging in terms of test scores. One reason is simply that adding more students with underdeveloped learning lowered the average scores. These were the results in India and Indonesia. Even adding teachers, reducing classroom size, and providing tablets and laptops did not improve scores. The SDGs promise free schooling leading to “relevant and effective learning outcomes.” We are lagging in this regard.

     The researchers recommend two policies to better meet this SDG goal: 1) teach at the right level – instead of grouping with age exclusively, a significant part of the time students should be grouped at proficiency levels. One way to do this is to first assess levels with tablets, then teach according to assessed level. There are existing software packages that can do this. This is best done for about 1 hour per day, so that many students can share a tablet. It also relieves teachers’ concerns that they will be replaced by software. This approach has proved to be successful in improving test scores. A second approach to teaching at the right level is to shuffle students so that for part of a day they are in classrooms learning at their proficiency level. While this may require more teachers, more testing, and some awkward social interactions, it has also proved to be successful. 2) structured pedagogy – many teachers in low and low-middle income countries are paid poorly and are unfortunately not very competent as teachers. Structured pedagogy involves semi-scripted lesson plans, training teachers in their use, and coaching teachers during use. This approach has been so successful in Kenya that the whole country now uses it. These policies are cost-efficient too. BCR was calculated at 65 for teaching at right learning level with technology, 48 for teaching at right level without technology, and at 105 for structured pedagogy. The average BCR for all was 65, a great investment. Better learning leads to better productivity and eventually to more prosperity for the country. Structured pedagogy in particular can offer great benefits at a global investment of just $9 billion per year.

 

 

3)     Maternal and Newborn Health

 

     In Africa and Southeast Asia mothers are 80 times more likely to die from pregnancy-related complications than those in wealthy countries and newborn babies are 10 times more likely to die. This results in 2.6 million deaths per year. More funding to hire birth attendants and emergency care providers, training, drugs, and infrastructure can help to reduce these deaths. Rich countries have solved these problems and with funding poor countries can too. Sub-Saharan Africa accounted for one third of the 600,000 maternal deaths in 1985 (200,000) and two thirds of 300,000 maternal deaths in 2015 (also 200,000).

     Lomborg notes that the MDG goals reduced maternal and newborn deaths significantly, but there is more we can do. Unfortunately, in the first 6 six years thus far of the SDG goals the drop in maternal mortality has stalled and flatlined. One reason is simply that there are more births in poor countries. Similarly, for infant deaths, the current trajectory shows they will still be close to 2 million per year in 2030, far behind trajectories. Funding has not been increased very much since the time of the MDGs. Funding needs to increase.

     A protocol for evaluating solutions to maternal and infant mortality by the Institute for International Programs at the Johns Hopkins Bloomberg School of Public Health, called the Lives Saved Tool, or LiST compares policy choices in terms of cost and effectiveness. Researchers for this paper used 42 different interventions in different phases of pregnancy to find out what works best at the best cost. The paper examines packages of interventions rather than individual interventions. They focused on the 55 low- and lower-middle-income countries that account for 90% of global maternal and neonatal deaths. The results point to two packages of interventions that offer the best benefits for the least cost: 1) increase coverage of Basic Emergency Obstetric and Newborn Care (BEmONC) to 90% - this involves increasing staff, knowledge, and resources offered at healthcare facilities to treat birth complications. It involves women giving birth at the facilities with BeMONC services provided. Today only 63% give birth at a health facility so that needs to be improved as well as the services provided. Of all the BeMONC services neonatal resuscitation can be the most effective since birth asphyxia causes one third of the 2.3 million neonatal deaths each year. About 5% of all babies globally need ventilation. A re-usable resuscitator, a mask with a hand pump, can help prevent many deaths at low cost. These need to be available at all facilities; and 2) Increase unmet need for Family Planning services to 90% - women in poor countries need to know that it is possible to avoid pregnancy and have access to family planning methods. If less women would become pregnant each year, less women would die. Less children being born in poor countries also means more resources available for those that are alive. Women with less dependents can join the work force and make money for their families. BeMONC and Family Planning are given a very good BCR of 87 - $322 billion in annual benefits for $22 billion in annual costs. He calls implementing these policies “smart and morally compelling” and it is hard to disagree.  

 

 

4)     Agricultural Research and Development – More and Cheaper Food

 

     Even though we have made fantastic strides in reducing hunger in recent decades, we can do much more. Hunger and micronutrient deficiencies are a huge problem in the poor world, especially for mothers and young children. We have made significant progress tackling this problem but in the fast five years progress has stalled, partially as a result of Covid and Russia’s invasion of Ukraine. Annual deaths from malnutrition are 878,000 in low-income countries and 1.8 million in low-middle-income countries. This is a conservative estimate and is clearly unacceptable. We can reverse this trend with two main actions: economic growth and agricultural innovation.

     Lomborg notes that in general when a country’s GDP per capita reaches $10,000, then practically no one goes hungry. Economic growth and increased agricultural productivity have combined to keep more humans properly fed. The development of better crop varieties, more irrigation, and more nitrogen fertilizer have been the three major inputs to successfully feed more people. He notes that since 1961, global cereal yields increased by a remarkable 249%. Of course, higher yields mean lower food prices. We have also been able to grow way more food with way less workers, which also keeps food cheap. Mechanization of farming practices is a big factor.

     The MDG target for hunger abatement was very nearly achieved, However, since then we have backslid a bit. Hunger and malnutrition have increased since 2017. Covid led to 150,000 more people facing hunger and the Russian invasion of Ukraine led to 8 million more people becoming undernourished. Lomborg describes the SDG goals on hunger as “remarkably unfocused.” He thinks the SDG’s big wish list for countering hunger is too varied and complex. The SDG goal of eliminating hunger by 2030 (since re-interpreted to reaching a low of 5% malnutrition) is not feasible with the current focus and funding levels.

     Improving farming output is vital. He thinks overly focusing on smallholder farms and subsidizing them is not the best use of resources. These farms are often inefficient. Larger and better organized farms should be the focus. Unfortunately, agricultural policies are often not good investments for banks and governments.

     Investing in agricultural innovation and R&D has the potential to generate great returns as it has in the past. However, investment in this approach has lagged in the poor half of the world in recent years. He notes:

 

“… large-scale farms in rich countries with dependable property rights can afford to buy expensive but profitable technologies like new seeds. They have access to extensive agricultural science, funding, and infrastructure to enact innovations. Few of these things are available to farmers in low- and lower-middle-income countries.”

 

80% of agricultural R&D goes to high-income countries and most of the remaining 20% goes to lower-middle-income countries. Even the original Green Revolution overall favored wealthier countries. Clearly, poor countries need access and investment into ag R&D and new technologies. Better seeds, more irrigation, and more mechanization are needed. More of the internationally aligned research centers so vital to the original Green Revolution are needed. Innovations can lead to higher farmer incomes, more food, and cheaper food. That is what can keep people fed. An annual spending increase of $5.5 billion could generate $184 billion in benefits for a BCR of 33.45. This would be a very effective investment.

 




5)     Malaria

      We know how to address and reduce malaria. Simply put, he notes we can spend an extra $1.1 billion annually to avoid 200,000 deaths each year, yielding a phenomenal BCR of 48. Malaria is mostly gone in the rich world. Unfortunately, it is still endemic in sub-Saharan Africa. Malaria is caused by a parasite carried by mosquitoes. Although, it is often thought to be a feature of hot and humid countries, it once thrived as far north as the Arctic Circle and was once pervasive in the U.S. He mentions two main causes leading to the decline of malaria in rich countries: economic prosperity and medication. The draining of marshes led to less mosquito prevalence. The increased presence of livestock led to mosquitoes biting more of them and less humans. Better nutrition reduced people’s vulnerability to malaria. Increased incomes led to better homes and better-maintained insect screens.

     Medicine – quinine derived from the cinchona tree from South America – was discovered in the 1600’s but did not become widely available. The real medicinal breakthrough came with synthetically manufactured chloroquine and the disease began to decline drastically since 1945. The controversial insecticide DDT was also instrumental in preventing millions of malaria deaths as it was applied to mosquito nets. More than 4.5 million homes in the U.S were sprayed with DDT between 1947 and 1949. By 1951 malaria was considered eradicated in the U.S. Malaria still raged in Southeast Asia and in Africa. Mosquitoes did develop some resistance to DDT, but deaths still dropped dramatically in many places.

    Malaria deaths outside of Africa today are only about 30,000 annually. However, in Africa the malaria problem is much more intense. There are two reasons for this: 1) the malaria parasite in Africa is the deadliest form of it, and 2) the most common malaria mosquitoes in Africa nearly exclusively bite humans. In addition to this, the malaria parasite began developing resistance to chloroquine around 1978 and cases began to rise in Africa. A new drug called artemisinin was developed in 1972 from the sweet wormwood herb. It took time to catch on but in 2006 the WHO recommended it for first-line treatment. Rapid diagnostic tests can diagnose malaria and patients can receive artemisinin.

     The other important reason for malaria decline is the development and proliferation of long-lasting insecticide-treated bed nets (LLINs). Nearly 220 million nets were delivered to Africa in 2021. The nets protect humans, kill some mosquitoes, and disrupt their lifespans. LLINs are very effective where malaria is endemic. During the MDG years from 2000 to 2015 6.2 malaria deaths were averted. The SDG goals include hopes to eliminate malaria (and many other diseases) by 2030 but we are nowhere close to hitting those targets. Unfortunately, progress has been stalled since 2015 and after Covid malaria deaths in sub-Saharan Africa, really the main place it is so problematic, have actually risen or just slightly declined.

     One solution is to scale up LLIN distribution. Just increasing them by 10% in the 9 highest-burden countries can save many lives. People also need to be educated on the best ways to install and use them. As mosquitoes continue to develop resistance to pesticides, some will need to be sprayed by different pesticides, which cost a bit more.

     The paper for this chapter estimates that by 2030, LLINs can save 1.3 million lives. Less people will get sick as well. This means higher productivity and more wealth generation. The BCR given for increased use of LLINs is a very good 48.

 



 


6)     E-Procurement to Reduce Corruption

 

     Corruption is a huge problem around the world that takes funds away from solving problems. It leads to lower employment and lower economic growth. It erodes government tax revenue. Estimates, while difficult to establish, are that corruption costs about $1 trillion annually. Government procurement is the major area of corruption with the highest risk. Corruption is so entrenched that it is a given for operating. It is most prevalent in low- and low-middle-income countries, over 3 times higher (over 30%) than in high-income countries (10%). Bribery is the major form. Cronyism is another form, where favoritism is the norm. These all cut into government spending significantly. Total public procurement was estimated at $15 trillion in 2018, or 14.5% of global GDP. In poor countries government procurement can make up half of all public spending. Unfortunately, corruption is so entrenched that it is considered by many to be a hopeless problem to solve in great measure.

     Again, with corruption, there has been no progress since 2015 on the SDG goal to substantially reduce corruption by 2030. Efforts have not succeeded. Rooting out corruption is often blocked by powerful vested interests in governments and in the private sector.

     There is one solution that is promising for reducing corruption. That is e-procurement, simply making procurement transparent by moving it online with safeguards against manipulation. Many countries, particularly rich ones, have already implemented e-procurement. E-procurement has other benefits as well. One is that it speeds up the procurement process. This helped several countries deal better with Covid. Better oversight and improved delivery of services are other co-benefits. It also increases competition for government contracts, which can make services more efficient and cheaper. It reduces advertising costs for governments. Bidding and transaction costs for companies also drop. The researchers estimate that only about half of government procurement can be digitized. This has to do with projects involving national security having a need for secrecy.

     E-procurement does take time to implement. Two to four years of planning, designing, and building are typically required to set up the system, along with a year of piloting. Savings begin during the piloting stage and increase after that. Most of the costs are upfront and most of the benefits begin in the third year and increase after that. Unfortunately, the delayed benefits, even though phenomenal when they come, have slowed adoption of e-procurement.

     Not all e-procurement systems are at the same level of detail. The study here identified four procurement processes that can lower corruption when digitized: notification, access, attestation, and submission. The BCR given for low-income countries is a very good 38. The BCR given for low-middle-income countries, however, is an astounding 309. This is because the costs of setting it up are not that much more than for low-income countries, but the much higher volume of procurement amplifies the benefits. In addition, these BCRs are only for the first 12 years, even though the benefits continue.

 

 

7)     Nutrition

 

     Ensuring nutrition for children is most vital in a child’s first 1000 days from conception. Undernutrition can be directly measured by stunting, which means that children are short and underweight for their age. Stunting also means more vulnerability to infections and often slow behavioral development. Stunting is typically measured in children 5 years old and under. It has dropped around the world throughout the 20th and into the 21st centuries, but is still a problem in poor countries, particularly in Africa.

     While the SDG goal for malnutrition and stunting seeks drastically reduce it by 2030, we are again behind that schedule. The policy paper for this chapter outlines three proposals for tackling the problem. The first is supplements during pregnancy. Iron and Folic acid are needs provided by WHO, but calcium and micronutrients are often missing. Micronutrients include vitamins A, B1, B2, B6, B12, D, and E, plus zinc, copper, iodine, and selenium. They are cheap to provide. These supplements can reduce stillbirths, premature births, and low birth weights. Micronutrient supplements have a BCR of 38, and calcium supplements have a BCR of 19.

     The second proposal is promoting complementary feeding. This refers to adding food to a children’s diet at about 6-months age, in addition to breastfeeding. Lack of knowledge about childhood nutritional needs and poverty are the two reasons this is a problem. Targeting the most vulnerable mothers and children can have the greatest benefits at the lowest cost. Complementary feeding is given a good BCR of 16.

     The third proposal is Small-quantity lipid-based nutritional supplements, or SQ-LNS. SQ-LNS comes as a paste or spread in sachets. They have a much longer shelf-life than perishable food. The packets contain essential fatty acids, micronutrients, and proteins, and typically include vegetable oils, peanut paste, milk powder, sugar, and added vitamins and minerals. The total cost, including delivery, is $5 per child per month. Providing them to 41 million children could prevent 155,000 annual child deaths as well as reduce stunting significantly by as much as 1.5 million children over 18 months. The BCR for this individual approach is 14, just under the threshold of 15 but combined with the other policies the total BCR calculates to 18.

 

 

8)     Chronic Diseases

 

     Over the last few centuries, human deaths (in all countries), once caused mostly by infectious diseases, are now caused mostly by non-communicable diseases, or chronic diseases. These are often lifestyle related. Cancer and cardiovascular disease are the most prevalent. The most prevalent killer, cardiovascular disease, peaked in the U.S. in the late 1960s and early 1970s. In 2019 chronic diseases killed 42 million people, about 75%, compared to only 14% of people dying from infectious diseases. In terms of BCRs spending on chronic diseases will be less effective than spending on infectious diseases. However, spending on certain aspects of chronic diseases can still be very effective and cost-efficient. Deaths from chronic diseases are increasing as people live longer from being spared by infectious diseases, so the overall trend is one of success. The goal is to force chronic diseases to kill as late in life as possible. The SDG targets for chronic diseases are significantly behind aspirations. There are, however, cost-effective policies that can extend the lives of people with chronic diseases.





     The policy paper for this chapter proposes two categories of effective policies for chronic diseases. The first category involves specific policies for specific chronic diseases. The second category involves regulations and taxes as disincentives to overindulgence in tobacco, alcohol, and salt. For the first category, they looked at 25 specific policies and found 8 with BCRs above 15. These are, from highest BCR to lowest BCR as follows: 1) aspirin for suspected heart attack (BCR=63), 2) heart failure chronic treatment (BCR=41). 3) early-stage breast cancer treatment (BCR 39), 4) epilepsy: acute and chronic treatment (BCR=32), 5) injection drug use harm reduction (BCR=30), 6) depression: chronic treatment (BCR=23), 7) pulmonary rehabilitation (BCR=21), and 8) cardiovascular: primary prevention (BCR=16). Number 2 includes treatment with “water pills” to help the heart pump by getting rid of water and salt from the kidneys. Other drugs like beta-blockers continue to successfully extend lives which is one of the main reasons for the drop in deaths by cardiovascular disease. This has happened in the rich world but not enough in the poor world. Blood pressure screenings and medications are a cheap way to extend lives. Chronic depression is not as deadly but is a major factor in lost work and lost productivity and is cheap to mitigate with medications.

     In the second category of disincentives a tobacco tax is one solution. Less people smoking means less lung cancer as has happened in the U.S. It also means less problems from other smoking-related diseases including heart disease, strokes, lung diseases, diabetes, COPD, TB, and rheumatoid arthritis. Over a half million people still due in the U.S. each year due to tobacco smoking. Globally, that number is about 8.7 million, 1.3 million just from second-hand smoke. Tobacco regulation and tobacco taxes can reduce those numbers, although smokers won’t like it. Regulations on tobacco, alcohol, and salt refer to restrictions on advertising and indulging in certain places. BCRs for disincentives include the following: 1) tobacco tax (101), tobacco regulations (92), alcohol regulations (76), alcohol tax (53), trans fat regulations (40), and salt regulations (36). Experiments with salt reduction have yielded considerably less deaths from strokes. Processed food is one culprit of excess salt intake. Other solutions below the BCR 15 threshold could also be helpful for chronic diseases. These include acute heart failure treatment and other disease prevention and management solutions.

 

 




9)     Childhood Immunization

 

     Childhood immunizations have saved countless lives and will continue to do so. The goal now is to get more coverage, especially in low- and low-middle-income countries. Increased spending on children for vaccinations in poor countries could still save a half-million lives per year. Vaccination skepticism has been around since the beginning of vaccinations with smallpox, now a non-existent threat. It is still a factor in reducing childhood immunizations. The UN estimates that the MDG effort that expanded measles vaccinations prevented 15.6 million deaths from 2000-2013. The Bill and Melinda Gates Foundation and their Gavi Vaccine Alliance has been a major factor in expanding childhood immunizations in poor countries. It is estimated that just the increase in vaccine coverage from 2000-2015 prevented 30 million deaths, or 2 million deaths per year.

     Although the lofty SDG goals declared the intention to eradicate many of these communicable diseases by 2030, that is not at all likely, but we can do better with more spending. Vaccinations dropped in some of the poor countries during Covid, which slowed progress. This resulted in 25 million children under age 1 missing vaccinations in 2021, compared to 6 million in 2019. Measles, diphtheria, tetanus, pertussis, hepatitis B, and yellow fever are very rare in the rich world but still too common in the poor world. Unfortunately, many of the most vulnerable are in remote places with poor or no medical facilities or doctors which increases costs to get the shots to them. Simple incentives like free food and free transport can help get people to immunization camps and clinics. Even so, the BCR in terms of lives saved can be great at 101. The annual spending for these efforts is recommended to be increased to 41.7 billion.

 

 




10)  More Trade

 

     Expanding trade, aka. free trade, still has great potential to improve lives and lift people out of poverty. While Lomborg acknowledges that there are downsides of free trade (such as manufacturing jobs moving from centers in wealthy countries to poor countries due to cheaper labor), he is adamant that the benefits of free trade solidly outweigh the downsides. Free trade brings down costs for products which give all countries, rich or poor, more purchasing power, especially the poor. One downside is lost jobs in rich countries. Analysis shows that freer trade makes everyone richer. It’s a win-win. Protectionism is not useful in most cases. More trade brings more people out of poverty. Free trade brings down prices and allows more businesses to tap into economies of scale, where fixed costs can be shared more widely. It gives businesses bigger markets in which to sell. It can also lead to the development of better products as competition forces quality improvements to keep business. More free trade allows countries to grow their GDPs. The evidence suggests that when tariffs go down incomes go up and there is less poverty.

     The SDG goals for trade are to promote more trade under the World Trade Organization (WTO) and to correct and prevent trade restrictions on agricultural products, presumably to keep food prices lower. He notes there has been little increase in global trade in the first 7 SDG years. Data shows that although global trade in percent of GDP doubled from 1975 to about 2008 during the Great Financial Crisis, since then it has been flat to slightly declining. Lomborg and his team of economists explain all the pros and cons of free trade and why the benefits far outweigh the detriments. While the BCR of more trade is a low number of 7 for high-income countries that is still a decent benefit. For upper-middle-income countries the BCR comes to 45. For low- and low-middle-income countries it is 95. Since so much more trade is done by high-income countries, the BCR given for the whole world for freer trade is 11. These numbers may be pessimistic, it is suggested, and the actual BCRs may be higher. Even though wealthy countries benefit the least and carry the highest costs, they still benefit. Again, free trade especially benefits poor countries, so we should support it for that reason especially.

 

 

11)  Highly Skilled Migration

 

     Lomborg reports: “Economic evidence shows that one of the best ways to reduce inequality between nations is to allow workers to migrate to rich countries, where they will be much more productive.” Unfortunately, migration is currently a hot button issue in many parts of the world. Lomborg suggests a more moderate solution: “Increase highly skilled migration by 10%.” This solution supports the stated SDG goal of reducing inequality within and among countries.

     Most inequality efforts are focused on reducing it within countries, but it can and should also be reduced among countries. Inequality among countries is expressed as global inequality and is often measured by the Gini coefficient where 0 is no inequality and 1 is absolute inequality. The Gini coefficient increased steadily from about 0.5 to about 0.7 from about 1820 to about 1982. It then stayed flat till about 2002. From 2002 to the present, it has dropped back to 0.6. First Japan, then spectacularly with China, then India led the change. In 2018 global inequality was as low as it had been in 1900. Even so, it is estimated that there are still 657 million people living in extreme poverty. One solution is simply to allow more people to move to where there are more economic opportunities.

     Migration is a sensitive issue for many and often politically divisive. Migrants are often seen as thrusting themselves into a country where they are not welcome. That they are often aided by criminal gangs who take advantage of them can make matters worse for all parties. But the fact remains that migration both increases productivity and reduces poverty. Studies actually suggest that opening up all countries to unlimited migration could more than double global GDP. Of course, this is not likely at all or even remotely feasible.

     There are labor shortages in many rich countries due in part to lower birth rates but also due to the undesirability of some lower-paying jobs. Lomborg notes that the wage differences from poor to rich countries is a strong incentive to induce migration, even if criminal gangs and potential maltreatment make it dangerous.

    Of course, massive migration is wholly implausible for a number of reasons. Studies also suggest that with massive migration wages would increase drastically for the migrators but decline slightly for others in the rich country to which they migrate. That is not likely to go over well. Over time, however, wages would likely grow for both. Lomborg notes that the Copenhagen Consensus met with significant opposition when it proposed higher rates of migration in the past, a 20% increase per year which they calculated would bring a BCR of 45. Toning that down, they are proposing here to just increase skilled migration by 10% both globally and within Africa. Globally. They calculate that more skilled migration has a good BCR of 20. In Africa, they mention the benefits of young doctors migrating from poor to richer countries, with much of their career ahead of them. This could potentially make the richer country’s healthcare system more effective and more efficient by allowing more doctors to specialize. Even so, the BCR calculated for more skilled migration within Africa is much lower at 3.9. However, it would still be beneficial to allow and promote it.

 


 



12)  Land Tenure Security

 

       Property rights are taken for granted in rich countries, but the World Bank estimates that 70% of people in the world have no access to land registration systems.  This makes life more stressful, stifles economic development, and likely decreases agricultural output in places where it is needed. People without secure rights to their land are far less likely to invest in things like wells, irrigation, fertilizer, soil amendments, and farming equipment to increase their output and profit. Many people expect to one day be evicted from their land.

     The need is for more land to be surveyed and then registered with a system of land titles. Globally, only about 30 countries have nationwide functional land administration systems and fewer than a third maintain digital records (only two in Africa – Rwanda and South Africa). More urban areas are mapped and registered than rural areas. In OECD countries 97% of urban plots are mapped and 68% registered, with 71% of rural plots mapped and 68% registered. Globally, just 46% of urban areas are mapped, 24% of urban lands are registered, and rurally just 22% are mapped and registered. Sub-Saharan Africa has the lowest mapped areas at 14%. The policy paper for this chapter focuses on sub-Saharan Africa.

     Rwanda began a nationwide land registration project in 2007. They utilized aerial photography and high-resolution satellite imagery. Agreed upon plot boundaries were then imaged and registered digitally. Any disputed boundaries were given at least one month for objection and if there were no objections they were titled. By 2013, the country had demarcated 11.3 million land parcels out of an estimated 11.5 million in the entire country. There are still challenges in Rwanda, especially among rural lands where land transfers are more informal. While land parcels are registered, land transactions are often not registered, which is problematic. This is mainly due to high registration fees.

     Secure land tenure tends to benefit women more than men in poor countries. Women make up only 13% of agricultural land holdings. Unfortunately, no progress has been made in the first few SDG years for land tenure security. Land tenure security is beneficial for people but not so for governments and powerful people. Traditional powers over lands by tribal chiefs and politicians would have to be relinquished to varying degrees, so the problem is political as well as economic. In addition to surveying and titling, there is a need for changes in laws. The challenges are more difficult in rural areas. However, those areas of less value and less likely to be contested, can be done with less precision, less cost, and faster, with aerial photography and satellite imagery. These make up the bulk of land. Higher value lands near urban areas that are more likely to be contested will cost more than double to survey and register. Communal lands, common in some of these African countries, can be mapped and registered together and deeded to land-owning community groups. Slums in cities will likely take longer to sort out and survey, but it can further slow their proliferation, which already has been slowing in recent years.

     Along with mapping and registering, countries will need to develop better land administration services and better land dispute resolution abilities. Costs also need to be kept low for landowners. Better land dispute resolution can involve training and hiring more judges to move through backlogged cases. Costs to keep the systems functioning well will have to be paid but the potential benefits of more investment, more productive lands with better soil conservation practices, higher yields and better profit for farmers, and eventually cheaper and more abundant food, will far outweigh the costs. These payouts will happen slowly but become significant over time. Rural land registration in sub-Saharan Africa is given a BCR of 18. He does acknowledge that that problems could drop the BCR a bit if rollouts don’t go well.

     Urban land tenure security is also very important. People want to rest assured that they won’t be evicted from their homes. Simply put, people will continue to buy a house they are surer they can keep. The return is better for urban home and property owners with a BCR of 30.

 

 

Appendix – Benefit-Cost Analysis, Discounting, and Value-of-Life

 

     The goal of benefit-cost analysis is simply to identify all the benefits and all the costs and compare them. In practice this can be very difficult. Standards have been developed for economic analysis in this regard. Costs are more straightforward. Some are upfront costs, and some are operation and maintenance or management costs that occur through time. Benefits tend to accrue over many years and can be trickier to calculate. Predictions are partly based on past economic trends, particularly in developing countries. He notes that in rich countries labor income amounts to GDP per capita but in poor countries labor income can be twice GDP per capita. This has to do with more GDP going back to capital in rich countries while in poor countries there are many more young people and much less capital. The researchers estimated changes in income throughout a young person’s life to arrive at future benefits for countries and people.

     Discounting is used to make costs and benefits comparable by calculating the present-day value of both costs and benefits. Figuring out a discount rate can be complex and dependent on many variables. The World Bank suggests that a discount rate should be about double a country’s projected GDP per capita. Studies suggest the discount rate is lower in rich countries – between 3% and 5%. In poor countries the estimate ranges from 6% to 12%. The authors here chose a rate mostly based on the World Bank’s criteria to be 8%.

     Determining the value of a statistical life can be contentious and feel strange but is necessary to benefit-cost analysis. This is sometimes given as the cost at which people in an area or region are able and willing to pay to save one human life. As an example, we know that lowering the freeway speed limit to 50mph or even 40mph would save many lives, but it would not be well-received, and people are willing to risk more crashes and deaths to get where they are going. We deem it an acceptable risk. Risk is a strange thing to consider and involves many factors from psychological to biological to economical. The value of a statistical life in the U.S. is deemed to be $10 million. In the poor world there are far more risks and far less resources to mitigate those risks. Poor people are able and willing to spend far less on saving one human life for this reason mainly. They take more risks because they must. They have no other choice. The authors here came up with an average for low- and low-middle-income countries, i.e., the poor half of the world. This average is $128,000 for the value of a statistical life. More specifically, they develop the value of a statistical life based on age, coming up with a value of each saved life-year set at $4300. This is known as Value of Statistical Life Year (VSLY). The researchers strived to remain consistent with these values throughout the book. While valuing lives in this way may seem random and crass, it can be very useful for economic analyses, and it can lead to accurate predictions of future benefits. 

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