investments

Banning Gas-Powered Cars | Earth Wise

September 30, 2022 By EarthWise Leave a Comment

In June, the European Union voted to ban the sale of new gas- and diesel-powered vehicles starting in 2035. The EU joined Canada, the United Kingdom, Japan, South Korea, and several other countries in imposing future gas car bans.

Here in the U.S., on August 25th, California adopted rules banning the sales of new gas-powered cars and light trucks by 2035. New York passed a similar law last year and its ban will also cover heavy trucks by 2045.

California’s action is particularly significant because there are other states that have trigger laws that impose their own bans based on what California does. Washington state, Massachusetts, and Virginia are in this category, although the governor of Virginia has said he plans to try to repeal the law.

An additional 12 states have policies tied to California’s and are likely to adopt their own versions of the 2035 ban. These are Colorado, Connecticut, Delaware, Maine, Maryland, New Jersey, New Mexico, Nevada, Oregon, Pennsylvania, Rhode Island, and Vermont.

When these regulatory actions are coupled with the major investments in electric vehicles being made by virtually all automakers, the transition to electric vehicles appears to be inevitable.

As far as people who love their gas-powered cars are concerned, the new rules only apply to new car sales. So, consumers can still buy and own used cars that run on gasoline. If there are states that never impose bans on new gas-powered vehicles, then consumers can go to those states and buy one, assuming there are any being made at that point. It seems likely that gas-powered cars will end up being made for hobbyists and aficionados only.

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California Just Banned Gas-Powered Cars. Here’s Everything You Need to Know

Photo, posted May 20, 2018, courtesy of James Loesch via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

A Law To Tackle Climate Change | Earth Wise

September 8, 2022 By EarthWise Leave a Comment

The Inflation Reduction Act signed into law in mid-August is the most comprehensive U.S. legislation addressing climate change ever enacted. It contains $369 billion in funding for clean energy and electric vehicle tax breaks, domestic manufacturing of batteries and solar panels, and pollution reduction.

The legislation for the most part makes use of carrots rather than sticks to coax American consumers and industry away from reliance on fossil fuels. Rather than establishing more carbon taxes, mandates, and penalties, the law largely makes use of tax credits to provide incentives for the use of clean energy.

The law provides a large mix of tax breaks intended to bring down the costs of solar, wind, batteries, electric cars, heat pumps, and other clean technology. For example, consumers will get a $7,500 credit for purchasing many new electric car models and about $4,000 for buying a used vehicle.

On the stick side of the ledger, oil and gas companies that emit methane above certain threshold levels will incur fees that escalate over time. The law also increases the cost to the oil industry for extracting fossil fuels from public lands.

The act provides $60 billion for overall environmental justice priorities, including $15 billion targeted specifically for low-income and disadvantaged communities. There are many other provisions in the law addressing multiple climate-related issues.

According to three separate analyses by economic modelers, the investments from the Inflation Reduction Act are likely to cut pollution by about 40% below 2005 levels by the year 2030.

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The US finally has a law to tackle climate change

Photo, posted December 15, 2021, courtesy of Mario Duran-Ortiz via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Carbon Capture In Denmark | Earth Wise

January 11, 2022 By EarthWise Leave a Comment

Denmark has pledged to reduce greenhouse gas emissions 70% by 2030 compared with 1990 levels. The country has also banned oil exploration in Danish waters and plans to phase out offshore drilling in the North Sea by 2050.

Instead of pumping oil from the North Sea, Denmark plans to capture CO2 and store it there. To meet its climate goals, Denmark is investing $2.4 billion in a plan to capture carbon dioxide from its energy and industrial sectors and inject it into the seabed in geological formations that previously held oil and gas deposits.

The first North Sea carbon capture and storage facilities will be put into service in 2025 and will remove nearly half a million tons of emissions from the atmosphere each year. The carbon dioxide will be captured from energy and industrial sectors such as waste incineration and cement production.

There are multiple carbon capture projects underway around the world. Many are directed at so-called direct air capture, which is taking carbon dioxide out of the air once it is already there. In Iceland, a project named “Orca” is extracting CO2 from the air and piping into a processing facility where it is mixed with water and diverted into a deep underground well. Other large direct air capture plants are being built in the U.S. Southwest and in Scotland.

Whether capturing carbon from industrial operations or directly from the air ultimately makes environmental and economic sense remains to be seen. What is driving the development of these technologies is the troubling math that reducing emissions is not happening fast enough to stave off the destructive effects of climate change that will result from global temperatures rising too much.

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Denmark bets on North Sea carbon capture to hit climate goals

Photo, posted July 2, 2018, courtesy of Ansgar Koreng via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Major Funding For Novel Energy Storage | Earth Wise

October 21, 2021 By EarthWise Leave a Comment

The accelerating adoption of wind and solar energy is driving a growing interest in energy storage technologies. An electric grid dominated by intermittent power sources will need large-scale energy storage. Grid-scale energy storage is expected to increase at least 10 times over the next decade and this will require nearly $300 billion in investments over that time period.

Much of the effort in energy storage has focused on battery storage. But there are other storage technologies that are attracting attention and investment.

Energy Vault is a Swiss-based company specializing in gravity and kinetic energy-based energy storage. Their technology uses a multi-headed crane to store energy generated by renewable sources by stacking heavy blocks made of composite material into a tower, capturing potential energy from the elevation gain of the blocks. To produce electricity, the crane lowers the blocks to the ground, driving generators in the process. The company has just raised $100 million in funding from investors.

Malta, Inc. is an energy storage company based in Cambridge, Massachusetts that is developing an electro-thermal energy storage system. Energy generated from renewable (or other) sources drives a heat pump to create thermal energy producing both hot and cold reservoirs. The heat is then stored in molten salt while the cold is stored in a chilled liquid. To generate electricity, the temperature difference between the two reservoirs is used to drive a heat engine. Malta has recently raised $60 million in new funding including significant support from Chevron Energy Ventures.

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Energy Vault Raises $100 Million In Series C Funding

Chevron backs long-duration thermal energy storage developer Malta

Photo, posted October 16, 2019, courtesy of Jonathan Cutrer via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Wind Power Update | Earth Wise

October 8, 2021 By EarthWise Leave a Comment

The Department of Energy recently released three reports showing record growth in land-based wind energy, a growing number of offshore wind projects, and the continuing reduction in the cost of wind power.

The U.S. installed a record amount of land-based wind energy in 2020. In total, 16,836 MW of new utility-scale land-based wind power capacity was added during the year, representing $24.6 billion in new wind power projects. This was more added than from any other energy source and represented 42% of new U.S. energy capacity.

For the year, wind energy provided more than 10% of in-state electricity generation in 16 states. Notably, wind provided 57% of Iowa’s electricity and more than 30% in Kansas, Oklahoma, South Dakota, and North Dakota.

As wind turbines continue to grow in size and power, they are producing more energy at lower cost. Turbine prices have gone from $1,800/kW in 2008 to $770-850/kW now.

The pipeline for U.S. offshore wind energy projects has grown to 35,324 MW, a 24% increase over the previous year. The Bureau of Ocean Management created five new wind energy areas in the New York Bight with a total of 9,800 MW of capacity.

Distributed wind power, which are systems connected on the customer’s side of the power meter as opposed to those on the utility side, also saw increased growth last year.

Wind power is a key element in the adminstration’s goal of having a decarbonized electricity sector by 2035.

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DOE Releases New Reports Highlighting Record Growth & Declining Costs Of Wind Power

Photo, posted March 24, 2016, courtesy of Adam Dingley via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

A Green Light For Commercial-Scale Offshore Wind | Earth Wise

May 27, 2021 By EarthWise Leave a Comment

The Biden administration has given final approval to a project it hopes will usher in a new era of wind energy in the United States. The greenlight was announced by the Department of the Interior on May 11.

The Vineyard Wind project intends to install up to 84 huge wind turbines about 12 nautical miles off the cost of Martha’s Vineyard, Massachusetts. In total, Vineyard Wind could generate 800 megawatts of electricity, enough to power about 400,000 homes. The construction project will create about 3,600 jobs. The $2.8 billion project is a joint venture of the energy firms Avangrid Renewables and Copenhagen Infrastructure Partners.

The idea of a wind farm off the Massachusetts coast was conceived 20 years ago but ran into repeated setbacks, delays, and well-funded opposition from waterfront property owners concerned about what will ultimately be the barely discernable sight of tiny blips on the distant horizon. The Trump administration moved to cancel the permitting process for Vineyard Wind, but the Biden administration revived the project in March as part of its greater efforts to tackle climate change.

Electricity generated by Vineyard Wind will travel via cables buried six feet below the ocean floor to Cape Cod, where they will connect to a substation and feed into the New England grid. The project is expected to begin delivering wind-powered electricity in 2023.

The Biden administration says that it intends to fast-track permits for other wind projects off the Atlantic Coast and that it will offer $3 billion in federal loan guarantees for offshore wind projects and invest in upgrades to ports across the United States to support wind turbine construction.

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Biden Administration Approves Nation’s First Major Offshore Wind Farm

Photo, posted February 8, 2007, courtesy of mmatsuura via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Solar Cell Greenhouses | Earth Wise

April 21, 2021 By EarthWise Leave a Comment

A recent study at North Carolina State University has shown that it can be feasible to use see-through solar panels in greenhouses to generate electricity. The idea is to use semi-transparent solar panels on greenhouses that allow some of the light to get in for the plants to grow while making the greenhouses energy neutral or even allowing them to generate more power than they use.

The question is how the semi-transparent solar panels might affect greenhouse crops. To investigate this issue, researchers grew crops of red leaf lettuce from seed to full maturity under a standard set of growing conditions – temperature, water, fertilizer, and CO2 concentration – but varied the light they get.

A control group was exposed to the full spectrum of white light while three experimental groups were exposed to light through different types of filters that absorbed the particular wavelengths of light that would be absorbed by different types of semitransparent solar cells.

The researchers paid close attention to characteristics of the lettuce that are important to growers, grocers, and consumers: general appearance, leaf number, leaf size, and weight. The results were that the lettuce produced using all three kinds of filtered light was essentially identical to that produced in the control group. Further research is underway looking at how harvesting various wavelengths of light affects biological processes for lettuces, tomatoes, and other crops.

Getting growers to use solar-powered greenhouses would be very difficult if doing so would result in a loss of productivity. But given these experimental results, it appears as though the decision will boil down to a simple economic argument about whether the investment in new greenhouse technology would be offset by energy production and its resultant savings.

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Study Finds Plants Would Grow Well in Solar Cell Greenhouses

Photo, posted April 8, 2008, courtesy of Brian Boucheron via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

New York Offshore Wind | Earth Wise

February 18, 2021 By EarthWise Leave a Comment

Norwegian energy company Equinor and its strategic partner bp have been selected by New York State to build several offshore wind power installations that will be one of the largest renewable energy projects in the United States to date. When completed, the projects will provide 1,260 megawatts of offshore wind power from Empire Wind 2 and another 1,230 megawatts from Beacon Wind 1 and these will be added to the 816-megawatt project already awarded to the companies for Empire Wind 1.

The two phases of Empire Wind are located 15-30 miles southeast of Long Island and span 80,000 acres. Beacon Wind is located 60 miles east of Montauk Point and 20 miles south of Nantucket and covers 128,000 acres. The overall development will provide 3.3 gigawatts of homegrown, renewable electricity to New York.

The projects will comprise up to $8.9 billion in investments including $664 million provided by the state. As part of the award from NYSERDA, the companies will partner with the State to transform two New York ports – the South Brooklyn Marine Terminal and the Port of Albany – into large-scale offshore wind working industrial facilities that position New York to become an offshore wind industry hub.

In Albany, Equinor will join forces with wind industry companies Marmen and Welcon to help the port become America’s first offshore wind tower and transition piece manufacturing facility, where it will produce components for Equinor’s projects.

New York’s goal is to have 9 gigawatts of offshore wind capacity by 2035. The Equinor projects will contribute more than one-third of that goal.

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New York Selects Equinor for Largest US Offshore Wind Award

Photo, posted March 24, 2016, courtesy of TEIA via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Drilling Rights In The Arctic National Wildlife Refuge | Earth Wise

February 2, 2021 By EarthWise Leave a Comment

The battle to prevent oil and gas drilling rights from being sold in the Arctic National Wildlife Refuge in Alaska has been going on for 40 years. The Trump administration spent nearly four years pushing to auction off those drilling rights and finally accomplished it in early January.

The ANWR was created in 1960 and is the largest intact wilderness in the U.S., covering nearly 30,000 square miles in Alaska. It is an important breeding habitat for polar bears as well as the home of more than 200 other species including caribou, arctic foxes, golden eagles, and snowy owls. Parts of it are also sacred ground for the indigenous Gwich’in people.

The auction carved out a 5% slice of the refuge for leases and proponents anticipated it would generate billions of dollars in revenues that would offset tax cuts in Alaska.

Of the 22 parcels of land offered, totaling 1.1 million acres, only 12 were bid on at all and the state of Alaska was the sole bidder on 9 of those. In total, the auction raised a paltry $14 million.

Whether the remarkable absence of interest was due to a lack of infrastructure or roads around the region, the decline of fossil fuel investments and use during the pandemic, or the anticipation that any leases would be the subject of endless legal battles by indigenous tribes and environmental activists, the net result was that the auction was basically a flop.

President Biden has stated that he is entirely against Arctic drilling, so the new administration is likely to try to repeal or interfere with any drilling leases or other industrial activity in the ANWR.

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Arctic Oil Drilling Plans Suffer ‘Stunning Setback’ as Almost ‘No One Shows Up’ For the Sale

Photo, posted July 3, 2019, courtesy of Alaska Region U.S. Fish and Wildlife Service via Flickr. Photo Credit: Danielle Brigida/ USFWS

Earth Wise is a production of WAMC Northeast Public Radio.

A Large Drop In U.S. Greenhouse Gas Emissions | Earth Wise

December 29, 2020 By EarthWise Leave a Comment

Greenhouse gas emissions in the U.S. in 2020 are on track to be at their lowest level in nearly 30 years as a result of the COVID-19 pandemic. U.S. emissions haven’t been this low since 1983, when the economy was not even 40% of its current size.

According to a new study by the research group BloombergNEF, U.S. emissions for the year will be 9% lower than they were in 2019, which will be the largest yearly drop on record. The report also anticipates that whatever happens in the pandemic, 2021 emissions will be well below pre-COVID levels as well.

The pandemic has inadvertently put the U.S. back on track to meet its original commitments to the Paris Climate Agreement, despite the fact that we have pulled out the agreement. The incoming administration plans to return the U.S. to the pact.

Overall, U.S. emissions have been trending downward since 2008, primarily as a result of the lower dependence of the power sector on coal. The report estimates that in the absence of the pandemic, 2020 emissions would have been 1% lower than last year’s.

The dramatic drop in emissions is not really a great cause for celebration. Achieving significant emission reductions through massive economic hardship and societal disruption does not point the way towards making progress on climate change. The economic upturn that will undoubtedly occur when the pandemic loses its grip on the world will lead to rebounding levels of greenhouse gas emissions. But as is the case with all major crises, the current situation does present a chance to turn this temporary downturn in emissions into a more permanent one by making appropriate investments and policy changes.

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Due to COVID-19, 2020 greenhouse gas emissions in the U.S. are predicted to drop to lowest level in three decades

Photo, posted January 13, 2013, courtesy of Onnola via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Paying To Combat Climate Change | Earth Wise

November 2, 2020 By EarthWise Leave a Comment

The majority of Americans believe that climate change is happening, that human activities are largely responsible, and are actually willing to put up their own money to help fight it. Unfortunately, these views diverge sharply along party lines and, as in many other areas these days, the will of the overall majority has little influence on policy.

According to Yale University research, 73% of adults think that global warming in happening and 57% think it is mostly caused by human activities. Furthermore, only 32% believe it is due to natural forces.

A survey conducted in the U.S. in August found that more than two-thirds of Americans – actually 70% – indicated willingness to donate a percentage of their personal income to support the fight against climate change.

Breaking that down further, 28% were willing to provide less than 1% of their income, 33% were willing to contribute 1-5% of their income, 6% said they would give 6-10% of their income, and 3% said they would contribute more than 10% of their income. On the other hand, roughly 30% indicated that they were unwilling to contribute.

The survey also looked at opinions on how the fight against climate change should be paid for. The majority (59%) chose government incentives for both businesses and consumers. Three other options each favored by over 40% of those surveyed were taxes, conservation programs, and business investments.

Another finding of the survey was that 44% are dissatisfied with the job that the federal and state governments are doing to address climate change, 35% are somewhat satisfied, and only 21% are very or completely satisfied with the government’s role.

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Yale Climate Opinion Maps 2020

Two-thirds of Americans are willing to donate part of their income to fight climate change

Photo, posted April 29, 2017, courtesy of majunznk via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Saving Costs And Reducing Emissions From Shipping | Earth Wise

March 2, 2020 By EarthWise Leave a Comment

International shipping is a large and growing source of greenhouse gas emissions. Maritime transport produces about a billion tons of CO2 annually, accounting for about 2.5% of global greenhouse gas emissions. The environmental impact of shipping includes air pollution, water pollution, and even acoustic pollution. In many coastal areas, ships are responsible for more than 18% of some air pollutants. Overall, there are more than 100,000 transport ships at sea, of which about 6,000 are large container ships.

In recent years, the shipping sector has had both internal willingness and external pressure to reduce emissions, but shipping is a tough, competitive business and it isn’t easy to stay competitive and help protect the environment.

A recent study at Abo Akademi University in Finland has found that improved ship utilization rates and investments in environmentally sustainable technologies for enhanced energy efficiency would significantly reduce carbon dioxide emissions. Of equal importance, those same measures would contribute to lowering of freight costs.

If the same cargo volume can be shipped using less fuel, shipping companies will gain major savings in terms of fuel costs. Digitalization can provide valuable benefits. For example, new digital planning and booking systems would enable smarter use of routes while also diminishing traffic with half-empty vessels or even ones with no cargo aboard. Reducing such underutilization would improve the capacity utilization rate and eliminate emissions caused by so-called ballast traffic.

Global shipping continues to grow. It is essential that it becomes smarter and more efficient to protect the environment and improve its economics.

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Environmentally friendly shipping helps to reduce freight costs

Photo, posted February 18, 2016, courtesy of Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Stranded Coal Assets In Japan

November 25, 2019 By EarthWise Leave a Comment

Japan is facing a looming financial problem as a result of heavy investments in coal technology that may quickly become stranded assets as renewable energy sources become increasingly inexpensive.

Japan is gradually adding more ambitious policies with regard to climate change including goals to reduce emissions and to have renewables become the main source of power over the next three decades. But despite these policy efforts, Japan is still investing heavily in coal power. Japan currently has 21 new coal projects with over 11 GW of under-construction, permitted or pre-permitted coal capacity. But these tens of billions of dollars in assets would have to be closed prematurely in order to remain consistent with the goals of the Paris Climate Agreement.

According to a new report by the Carbon Tracker Initiative, a financial think tank, and the University of Tokyo, offshore wind power will be cheaper than coal in Japan by 2022, new solar cheaper by 2023, and onshore wind less expensive by 2025. The price of offshore wind is already comparable to existing coal power in Japan. Japan had a total of 55.5 GW of solar capacity last year and has the potential to reach 150 GW by 2030.

The report notes that 42% of the global coal fleet likely became unprofitable last year and this could rise to 72% by 2040. The authors contend that building coal power today equals high-cost power and financial liabilities tomorrow. The planned and operating coal capacity in Japan is partially protected by regulations that give coal generators an unfair advantage in the marketplace. Ultimately, the stranded coal assets are likely to be passed down to consumers through higher power prices.

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Land of the Rising Sun and Offshore Wind

Photo, posted April 25, 2019, courtesy of Jen via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

The Largest Community Solar Program

November 22, 2019 By EarthWise Leave a Comment

Community solar projects allow customers to benefit from the economic and environmental attributes of solar energy when they don’t have the ability to invest in their own system for any number of reasons.

Florida Power & Light company is proposing to build the largest community solar program in the United States, pending regulatory review. The planned installation of 1,490 MW of new solar capacity at 20 new power plants distributed across FPL’s service territory is expected to generate an estimated $249 million in net savings for all FPL customers over the long term.

In addition to becoming the largest community solar program in the country, the new program would also be the largest voluntary low-income solar offering in the country. Low-income households are typically unable to benefit from solar energy because of not having the means to invest in the technology. The new SolarTogether program will have more than 35 megawatts of capacity dedicated to low-income Florida families. Solar energy is a critical tool for enabling low-income families to tap into energy savings.

The SolarTogether program would provide direct savings in the form of bill credits, making solar an affordable option for any customer. The Southern Alliance for Clean Energy and Vote Solar joined with FPL to help design the program to include a low-income component and request Florida Public Service Commission approval. There is broad support for the program from universities, county and city governments, and private companies. In addition, more than 90,000 residential and small business customers have already signed up to receive more information. The utility hopes to receive regulatory approval in time to launch during the first quarter of 2020.

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FPL plans nation’s largest community solar program; includes low-income focus

Photo, posted March 8, 2018, courtesy of Babcock Ranch via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Displaced By Extreme Weather

November 11, 2019 By EarthWise Leave a Comment

The Internal Displacement Monitoring Centre is the world’s authoritative source of data and analysis on internal displacement. Internal displacement refers to people being forced to flee their homes or places of habitual residence but who remain within their country’s borders. Such displacements can be the result of conflict, violence, development projects, natural disasters, or climate change. As of the end of 2018, over 41 million people were living in internal displacement because of conflict and violence alone.

This year, natural disasters are causing a record number of internal displacements. In the first half of the year, 7 million people were displaced by disasters, accounting for nearly two-thirds of all the internal displacements worldwide. The IDMC estimates that this number could hit 22 million by the end of the year.

The vast majority of displacement has been associated with storms and floods. Cyclone Fani alone in May displaced more than 3.4 million people in India and Bangladesh. In March, Cyclone Idai displaced 617,000 people in Mozambique, Malawi, and Zimbabwe. In total, 950 extreme weather events in 102 countries and territories displaced 7 million people from January to June.

Technically speaking, internally displaced people are not considered to be refugees because they remain in their home countries. But the growing millions of people represent a global crisis that continues to worsen with the changing climate. The international community cannot ignore the plight of these people. Governments around the world have to redouble their efforts to protect and assist their displaced citizens as well as to invest in sustainable development and climate change adaptation.

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Extreme Weather Displaced 7 Million People in First Half of 2019

Photo, posted August 5, 2012, courtesy of the U.S. Embassy, Jakarta via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Shutting Down Minnesota Coal Plants

July 8, 2019 By EarthWise Leave a Comment

One of the largest utilities in the United States, Xcel Energy Inc., announced that it will close its remaining coal-fired power plants in the Upper Midwest a decade ahead of its previously-announced schedule. In addition, the company will add 3,000 megawatts of new solar capacity by 2030.

The Allen S. King plant in Oak Park Heights, Minnesota and the Sherburne County Generating Station in Becker, Minnesota are the plants in question. The transition away from coal is a difficult challenge for such small communities. The plant in Becker, for example, employs 300 people in a town of 4,500 and provides 75% of the city’s tax base. Towns like this realize that coal is inevitably going away and must find ways to move beyond their dependence upon it. The Becker plant will not completely close until 2030, but parts will now only run seasonally, and one of the 3 units will close permanently in 2023

Xcel Energy, based in Minneapolis, serves more than 3.3 million electricity customers in 8 states. Last December, the company announced that it would deliver 100% clean, carbon-free electricity by 2050 and would achieve an 80% carbon reduction from its 2005 levels by 2035. It is the first major US utility to set such a goal.

Xcel will increase its investment in energy efficiency measures, bring 1,850 megawatts of new wind capacity online in Minnesota by 2022, and keep its Monticello Nuclear Generating Station operating until 2040, a decade later than planned. The company’s stepped-up clean energy strategy is part of a new legal settlement between the company, environmental organizations, and labor groups that involves Xcel’s proposed $650 million purchase of a 760-megawatt natural gas plant.

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