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Geothermal energy may be safe

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The Trump Administration is outwardly hostile to renewable energy, especially solar and wind power.  Federal support for these energy sources that are by far the most rapidly growing energy sources across the globe is being gutted while fossil fuels are being propped up.

There is also renewed enthusiasm for nuclear power and, somewhat surprisingly, geothermal heat.   Geothermal is a renewable and clean energy source that has long been mostly overlooked and underfunded.  The main reasons are its expense and the fact that its large-scale use is unproven. 

Historically, geothermal energy has relied upon naturally occurring features such as hot springs and shallow underground heat sources.  However, technological breakthroughs that began in 2013 have led to enhanced geothermal systems, or EGS.  EGS makes use of the fact that if you drill deep enough into the earth pretty much anywhere, you will encounter substantial amounts of heat.  EGS plants pump water three miles down or more where it encounters rock that reaches over 500 degrees.  The piping hot water is then brought to the surface where it spins turbines to generate electricity.

Several companies are developing EGS in the U.S.  financed by tech companies seeking power for their AI activities, the Defense Department, and even by fossil fuel companies who use comparable drilling technology for fracking.

The so-called Big Beautiful Bill passed by Congress in July that eliminates tax credits for wind and solar energy preserves tax credits for geothermal projects.

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Why U.S. Geothermal May Advance, Despite Political Headwinds

Photo, posted September 30, 2019, courtesy of Stephen D Strowes via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Wealth And Greenhouse Gas Emissions | Earth Wise

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A new study led by researchers from the University of Massachusetts Amherst has found that the wealthiest 10% of Americans are responsible for a staggering 40% of the country’s greenhouse gas emissions. The study, which was recently published in the journal PLOS Climate, is the first to link income, especially income derived from financial investments, to the emissions used in generating that income.

The research team suggests that policymakers adopt taxation strategies focused on shareholders and the carbon intensity of investment incomes in order to meet the global goal of limiting temperature rise to 1.5 degrees Celsius.

Historically, environmental policies have focused on regulating consumption, but the researchers argue that this approach misses something important:  carbon pollution generates income, but when that income is reinvested into stocks, rather than spent on necessities, it isn’t subject to a consumption-based carbon tax.  Rather than focus on how emissions enable consumption, they argue that the focus should be on how emissions create income. 

After analyzing 30 years of data, the researchers found that not only are the top 10% of earners in the United States responsible for 40% of the nation’s total greenhouse gas emissions, but that the top 1% alone account for 15-17% of the emissions. Emissions tended to peak in the 45-54 age group before declining.

The researchers highlight the need for an income and shareholder-based taxation strategy to incentivize climate action among high-income earners and industries, which could expedite decarbonization efforts and create tax revenue to support other climate initiatives.

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America’s Wealthiest 10% Responsible for 40% of U.S. Greenhouse Gas Emissions

Photo, posted June 29, 2015, courtesy of Pictures of Money (via Flickr).

Earth Wise is a production of WAMC Northeast Public Radio

Electric Cars Getting Cheaper | Earth Wise

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A sticking point for buying electric cars has always been that they are typically more expensive than equivalent gasoline-powered cars.  But increasing competition, government incentives, and falling prices for lithium and other battery materials is changing the equation.  In fact, the tipping point when electric cars are as cheap or even cheaper than internal combustion cars is likely to happen this year for many cars and, in fact, has already happened for some.

Battery production is ramping up for Tesla, General Motors, Ford, and others, creating cost savings from mass production. Companies manufacturing batteries in the United States are receiving government subsidies as part of a drive to establish a domestic supply chain and reduce dependence on China.  Before anyone cries foul, it should be noted that globally, oil companies received a trillion dollars in subsidies last year.  The Inflation Reduction Act is making it cheaper for automakers to build electric cars (provided they do it in the United States using US materials) and cheaper for consumers to buy them because of tax credits.

Multiple companies have lowered the price of their electric vehicles in recent months, including both the Tesla Model 3 and Model Y, which are the best-selling electric cars in the United States. GM’s electric Equinox crossover will start at about $30,000, which is still about $3,400 more than the gas-powered version.  But once the electric vehicle tax credit is figured in, it will actually be cheaper.

Electric cars are already cheaper to own and operate because of the much lower cost of powering with electricity instead of gas as well as the greatly reduced maintenance costs for the vehicles.  Once the purchase price of these cars is less than that of gas-powered cars, the economics becomes a no-brainer.

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Electric Vehicles Could Match Gasoline Cars on Price This Year

Photo, posted May 11, 2021, courtesy of Chris Yarzab via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Climate A Winner In The Elections | Earth Wise

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The dominant issues in midterm elections in November were the economy and abortion rights, but at the same time there were also ballot initiatives in various cities and states across the country related to climate.  What some describe as the ‘silent surprise’ of the election was that these initiatives generally passed and, in some cases, by large majorities.

The most significant of these ballot measures was in New York, where two-thirds  of voters passed the largest environmental bond measure in state history.  The measure funds up to $4.2 billion for environmental improvement projects including increasing flood resiliency, reducing greenhouse gas emissions, electrifying school buses, and creating more green and open spaces.

The Clean Water, Clean Air, and Green Jobs Environmental Bond Act provides up to $1.5 billion for projects aimed at climate change mitigation.  Another $1.1 billion is targeted for flood risk reduction and waterway restoration.  $650 million goes for water quality and infrastructure improvement. 

Rhode Island voters passed a green bonds act that will allow the state to invest in climate resiliency at the municipal level, as well as local recreation, open space protection, brownfields remediation, and forest and habitat restoration. 

Other climate-related ballot measures passed in Boulder, Colorado and in El Paso, Texas.  There were however a few climate measures that lost.  Proposition 30 in California that would have taxed very high-income residents to encourage sale of electric vehicles failed.  So did Arizona Proposition 310, which would have increased sales taxes by 0.1% to fund fire districts.

But overall, it was a good election for the climate.

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Voters pass historic climate initiatives in ‘silent surprise’ of US midterms

Photo, posted September 24, 2021, courtesy of Ivan Radic via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

New York Bans Some Crypto Mining | Earth Wise

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Crypto mining, the arcane process by which cryptocurrencies are generated, is incredibly energy-intensive.  As of this past summer, global electricity usage for the activity is as much as 240 billion kilowatt-hours per year, which is more than many entire countries use (for example Australia and Argentina.)  Crypto mining consumes as much electricity as all the conventional computer data centers in the world.

All that energy usage is problematic for the environment, but a growing practice has made it far worse.  Crypto miners have been re-powering decommissioned fossil fuel power plants to produce electricity strictly for mining operations.  Doing so eliminates the climate benefits achieved by shutting down those plants.

The New York State Legislature passed a bill in June that would place a two-year moratorium on permits to re-power fossil fuel plants.  It does not prevent crypto mining from existing generation sources.  The bill had sat on the governor’s desk until after the recent election.   But in late November, Governor Hochul signed the bill despite considerable lobbying against it.

The temporary ban was heavily opposed by cryptocurrency industry groups, to no surprise.  While some states actually offer tax incentives to lure crypto mining operations, supporters of the legislation hope that New York’s action may cause others to follow its lead and stop the reactivation of old fossil fuel plants.

The two-year moratorium will allow time to properly evaluate the impact of the crypto mining industry on the state’s climate goals.  It is pretty obvious that reactivating old, retired fossil fuel power plants as an energy source is a move in the wrong direction.

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New York Enacts 2-Year Ban on Some Crypto-Mining Operations

Photo, posted February 27, 2021, courtesy of Ivan Radic via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Carbon Capture Booming | Earth Wise

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For the world to reach a state of net-zero emissions, it is going to require more than the ongoing transition to renewable energy sources.  There will also need to be efforts to capture the emissions from sources that can’t easily eliminate their pollution.  These include steel mills, cement plants, and other industrial sites.  At least for the foreseeable future,  a number of essential industries have no other viable path to deep decarbonization, and carbon capture and storage projects are the only promising strategy on hand.

Companies use CCS to filter emissions from fossil fuel power plants and industrial facilities and then bury the captured carbon underground, often in deep caverns.

Over the past 12 months, the pipeline for carbon capture and storage projects has grown by 44%.  This year, firms have announced 61 new CCS projects, bringing the total number of commercial projects in the global pipeline to 196, which includes about 30 that are already in operation.  Another 11 are under construction, and 153 are in development.

When all of these projects are completed, they will have the capacity to capture a total of about 270 million tons of carbon dioxide per year.  Estimates are that there need to be 1,400 million tons locked away each year to reach zero-emissions.  So, the existing project pipeline constitutes about 20% of what is ultimately needed.

The recently passed Inflation Reduction Act boosts tax incentives for carbon capture.  Analysts believe this could multiply U.S. deployment of the technology more than 10-fold.  Globally, it is expected that CCS will continue its rapid growth as countries ramp up investments in the technology.

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Carbon Capture Projects See Meteoric Growth in 2022

Photo, posted August 22, 2022, courtesy of Nenad Stojkovic via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Electrifying Delivery Vehicles | Earth Wise

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Most of the buzz about electric vehicles relates to passenger cars as the auto industry is making a major transition away from gasoline power.  Recently, pickup trucks have started to get some attention as well as Ford’s electric version of the F-150 truck has hit the streets and the long-awaited Tesla Cybertruck will be introduced next year.  There hasn’t been as much talk about delivery vehicles, but there should be.

There are about 15 million delivery vehicles in the U.S., and they are a significant contributor to greenhouse gas emissions.   The post office alone has a quarter million of them.  Such vehicles are especially attractive candidates for electrification.  Most travel relatively consistent and short routes, which makes it easier for companies to be able to charge them and keep them charged.

Electrifying delivery vehicles in cities is especially important because the vehicles travel into and through residential neighborhoods, spreading pollution and particulates as they go.

Some provisions of the Inflation Reduction Act provide credits for the purchase of commercial vehicles.  Light-duty vans and trucks qualify for a credit of as much as $7,500.  Medium- and heavy-duty trucks qualify for credits as high as $40,000.  In addition, substantial tax credits are available for the installation of charging equipment.

According to a study by the Rocky Mountain Institute, sixty percent of new truck sales could be electric by 2030.  By 2035, the trucking industry could cut its emissions in half.

American companies are already stepping up to the plate.  Amazon plans to deploy 100,000 electric delivery vehicles from new automaker Rivian.  Walmart, UPS, FedEx, and others have also committed to electrified trucks.

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The Climate Bill Will Electrify More Delivery Vans and Trucks

Photo, posted August 1, 2021, courtesy of Ivan Radic via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

What’s The Best Way To Reduce Emissions? | Earth Wise

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A carbon tax is a fee imposed on the burning of carbon-based fuels, like coal, oil, and gas.  It’s one way to make the users of carbon fuels pay for the climate damage caused by releasing carbon dioxide into the atmosphere. 

According to a new study by researchers at Ohio State University, putting a price on producing carbon is the cheapest and most efficient policy change that legislators can make in order to reduce climate change-causing emissions. 

The case study, which was recently published in the journal Current Sustainable/Renewable Energy Reports, looked at the impact that a variety of policy changes would have on reducing carbon dioxide emissions from electricity generation in Texas. The researchers found that assigning a price to carbon, based on the cost of climate change, was most effective. 

The study did not look at how policy changes might affect the reliability of the Texas power system, an important consideration after the failure of the state’s power grid following winter storms in February. 

But the study did examine other policies and found that they were either more expensive or not as effective, including mandates that a certain amount of energy in a portfolio come from renewable sources.  Subsidizing renewable energy sources was also found to be less effective. 

According to researchers, market-based solutions have previously proven effective combating environmental issues.  For example, a cap-and-trade approach was used to reduce levels of sulfur dioxide, one of the chemicals that causes acid rain. 

For the sake of the climate, we should probably tax carbon. 

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Want to cut emissions that cause climate change? Tax carbon

What’s a carbon tax?

Photo, posted June 5, 2011, courtesy of John Englart via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Vehicle Electrification On The Rise | Earth Wise

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Nearly 70% of U.S. oil consumption is for transportation and transportation accounts for 28% of the country’s greenhouse gas emissions.  Therefore, technology improvements in transportation that can reduce emissions are a key element of combating climate change.  The highest impact strategy is the electrification of the transportation sector, and it is definitely accelerating.

Demand for electric vehicles is growing for multiple reasons.  These include long-term cost savings, tax incentives, declining battery costs, and greater environmental awareness.  This year, about 2.7 percent of global passenger vehicle sales will be for electric vehicles.  It is still a fairly small number, but that number is growing rapidly.  It is expected to be 10% in 2025, 28% in 2030, and more than half of all vehicle sales by 2040.  By that year, more than 30% of passenger vehicles on the road worldwide will be electric.  The numbers for electric buses, delivery vans and trucks, mopeds, scooters, and motorcycles are expected to be even higher.

The environmental impact of electrification will be significant in reducing carbon emissions and pollution in general.  Electric vehicles already reduce oil demand by a million barrels a day.  By the year 2040, they will displace nearly 18 million barrels of oil a day and reduce CO2 emissions by 2.5 billion tons per year.

Electric cars still face challenges.  They are still more expensive than gas-powered cars, but their cost-benefit analysis is changing rapidly as technology improvements and volume efficiencies drive down the cost of battery packs.  Analysts predict that electric vehicles will achieve price parity with internal combustion vehicles in as soon as two years but in any case within the next ten years.

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Electrification of transportation sector nears tipping point

Photo, posted May 7, 2020, courtesy of Mark Vletter via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Last New York Coal Plant Closing | Earth Wise

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The last coal-fired power plant in New York State is closing.  The plant, located in Barker, about an hour’s drive from Buffalo, employs 44 people.  The plant’s closure is an early test of New York’s new climate law, which is one of the most ambitious in the country.  The law is supposed to transform the state’s energy grid to carbon-free by 2040. 

Coal plants across the country are going offline, priced out by natural gas and targeted by regulations and incentives aimed at reducing greenhouse gas emissions.  Coal plant closures bring common challenges:  lost tax revenues and jobs as well as efforts to retrain workers and clean up sites.  Every plant has a specific place in a community, and each community has its own story.

The new climate law is supposed to create thousands of new jobs, including high-paying union jobs like the ones the employees in Barker are losing.  But jobs are scarce in the northwest corner of the state where Barker is located.

The state government has recently issued rules that would make it easier to get permission to build renewable energy sites, including wind turbines and solar farms, allowing applicants to bypass zoning rules and other local regulations.  But residents of rural towns have environmental and aesthetic concerns about these potential new energy plants.

In 2010, the United States had 580 coal-fired power plants providing 45% of the country’s electricity. By March 2018, there were fewer than 350 plants and coal’s market share had dropped to 30%.  At this point, there are about 224 plants producing 18% of the country’s power.  The writing is on the wall for coal power.

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New York’s Last Coal-Fired Power Plant Is Closing

Photo, posted March 13, 2018, courtesy of Joed Viera via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Lots Of Credit For Carbon Capture

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These days, the federal government has mostly turned its back on efforts to mitigate climate change or, for that matter, to even recognize its existence.  However,the budget bill passed in February contained a major increase in the tax credit known as 45Q, which provides incentives to businesses to develop and utilize carbon capture, utilization and storage technologies.

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Storing Energy With Captured CO2

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Capturing carbon dioxide instead of releasing it into the atmosphere is a way we can use fossil fuels without it having harmful effects on the climate.  Energy storage is a way to address the volatility of clean energy sources like wind and solar power.  Excess energy stored during peak production can be used when production ceases, such as when the sun is not shining or the wind is not blowing.

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Cleaning Britain’s Air

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According to a new study by the non-profit group Carbon Brief, carbon dioxide emissions in the United Kingdom are at their lowest levels since the 1920s.  Four factors are responsible:  a record drop in coal use, the rapid growth of renewable energy, the expansion of energy efficiency programs, and the increased use of natural gas for electricity power plants.

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