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More Solar And Wind Power In The U.S.

January 2, 2020 By EarthWise Leave a Comment

According to the U.S. Energy Information Administration, both wind and solar power are contributing more and more to total electrical generation in the United States.  For the first 8 months of 2019, the combination of wind and solar power accounted for almost 10% of U.S. electrical generation.

Solar, including small-scale PV systems on home rooftops, grew by almost 14% compared to the first eight months of 2018 and accounted for more than 2.7% of total electrical output.  In fact, small-scale solar generation increased by 19% and provided nearly a third of all the solar power in the country. 

Wind energy in the U.S. increased by 4.4%, accounting for almost 7% of the country’s electricity.

Overall, renewable energy sources – which include biomass, geothermal, hydropower, solar, and wind – accounted for 18.49% of net domestic electrical generation during the first 8 months of 2019.  The non-hydro renewable sources actually accounted for over 11% of total electricity production and saw a year-over-year growth of 6%. 

Outside of renewables, nuclear-generated electricity declined by 0.6% and coal power dropped by almost 14%.  Much of the coal generation was replaced by natural gas, which grew by 6.5% compared to the previous year.

Renewables now accounting for nearly 20% of overall electricity generation in the US represents significant progress.  But the variations by state continue to be substantial.  For example, while Vermont gets 99% of its power from renewables, Ohio gets only 2%. 

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Solar and wind energy provide almost 10 percent of total generation in the US in 2019

Photo, posted April 8, 2019, courtesy of City of St. Pete 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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A Major U.S. Utility Is Closing Its Coal-Fired Power Plants a Decade Early

Photo, posted January 3, 2016, courtesy of Tony Webster via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Lots Of Renewable Energy In Germany

April 29, 2019 By EarthWise Leave a Comment

As the contributions to the electrical grid from renewable sources continue to rise, people have expressed concerns about what might happen as sources like wind and solar energy become dominant.  Not many years ago, there was a common concern that if wind and solar contributed more than about a quarter of the energy mix, the grid might become unstable or unreliable.  Theoretical models looked at this situation but there hadn’t been much real-world data to look at.

One place where there is now real-world data on a large scale is Germany.  Germany has been aggressively deploying both wind and solar energy for years as part of a national initiative called the Energiewende or energy transition.  Germany recently increased its renewable energy goal from 55% to 65% by the year 2030.   The increased share of renewables takes into account the decommissioning of aging nuclear and coal power plants.

A demonstration of the feasibility of such a goal occurred in the first week of March when renewable sources actually supplied nearly 65% of Germany’s electricity.  Wind power alone provided nearly half of the country’s power.  As a result, fossil fuel plants ran at a minimum output and nuclear facilities were shut down at night.

Germany has a very large domestic coal industry and indeed lignite coal generated an average of 24% of the country’s power last year.   However, recently that share was down to just 12%.  During that first week of March, solar power contributed more than 5% of Germany’s electricity, biomass 7.6%, and hydropower 3.5%.

While the week with 65% renewable set a record, the ongoing trend is very positive as well.  In 2018, renewable energy generated an average of more than 40% of Germany’s electricity.

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Renewables Generated a Record 65 Percent of Germany’s Electricity Last Week

Photo, posted April 28, 2012, courtesy of Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

California vs. Fossil Fuels

September 19, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/09/EW-09-19-18-California-vs-Fossil-Fuels.mp3

California has led the way in deploying and committing to clean energy for a long time.  In August its legislature strengthened that commitment by passing a bill to stop using fossil fuels entirely by 2045.   It is the second state to do so, following Hawaii.  The bill still needs to be passed by the Senate and signed by the governor.  Both actions are expected to occur.

[Read more…] about California vs. Fossil Fuels

Yet Another Hot Year

September 14, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/09/EW-09-14-18-Yet-Another-Hot-Year.mp3

This summer has seen record heat in many places and some record-breaking wildfires.  In short, it looks a lot like the future that scientists have been warning about in the era of climate change.  And still some people continue to argue about whether anything is happening to the climate.

[Read more…] about Yet Another Hot Year

Renewables Beat Out Coal In Europe

March 5, 2018 By EarthWise 1 Comment

https://earthwiseradio.org/wp-content/uploads/2018/03/EW-03-05-18-European-Renewables-Beat-Coal.mp3

Last year was the first year in which more electricity in Europe was generated from the combination of wind, sun, and biomass than from coal.  The combination of all clean energy sources (which adds hydropower to the mix) surpassed coal several years ago.

[Read more…] about Renewables Beat Out Coal In Europe

Economics Of Solar And Wind Power

January 5, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/01/EW-01-05-18-Economics-of-Solar-and-Wind-Power.mp3

It is well-known that the cost of both solar and wind energy has been dropping dramatically in recent years.  That trend is largely responsible for the rapid growth of both power sources.   A recent study has revealed just how remarkable the economic progress has been.

[Read more…] about Economics Of Solar And Wind Power

Germany’s Struggle

December 15, 2017 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2017/12/EW-12-15-17-Germanys-Struggle.mp3

Germany has a reputation as one of the greenest countries on earth.  They have comprehensive recycling programs, they treasure their forests, and in recent decades, they have been aggressively working to replace both nuclear and coal-fired power plants with renewable energy sources.  They have been an early world leader in solar power.  And their national Energiewende or “energy turn” initiative demonstrates a strong commitment to the environment.

[Read more…] about Germany’s Struggle

The End Of British Coal

November 3, 2017 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2017/10/EW-11-03-17-The-End-of-British-Coal.mp3

In the 19th century, Britain produced 80% of the world’s coal.  Britain was the dominant global power in the industrial revolution with its giant blast furnaces, steam locomotives and steam ships.  And with advent of the electric age, coal once again was the power source of choice.  Even as late as the 1970s, Britain got 80% of its electricity from burning coal.

[Read more…] about The End Of British Coal

Renewables On The March

October 10, 2017 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2017/10/EW-10-10-17-Renewables-on-the-March.mp3

Solar power and wind power have both been growing by leaps and bounds in recent years and there is no end in sight to their progress.

[Read more…] about Renewables On The March

Reduced Emissions From Electricity Generation

February 28, 2017 By EarthWise

https://earthwiseradio.org/wp-content/uploads/2017/02/EW-02-28-17-Reduced-Emissions-from-Electricity-Generation.mp3

A recent report from the Energy Information Administration notes that for the first time in 40 years, carbon dioxide emissions from electricity generation are less than those from transportation.   The reason is that power plants nationwide are abandoning the use of coal and turning to cleaner burning natural gas, as well as newer sources such as solar and wind power.

[Read more…] about Reduced Emissions From Electricity Generation

Climate Change And Radioactive Waste

September 14, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2016/08/EW-09-14-16-Climate-Change-and-Radioactive-Waste.mp3

What do climate change and radioactive waste have in common?  It turns out a lot more than we’d like.  According to research, which was was led by York University in collaboration with the University of Zurich and recently published in the journal Geophysical Research Letters, rising global temperatures could lead to the release of – yep, you guessed it – radioactive waste. 

[Read more…] about Climate Change And Radioactive Waste

Too Much Of A Good Thing

June 10, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2016/05/EW-06-10-16-Too-Much-of-a-Good-Thing.mp3

Germany has continued to be the most aggressive adopter of renewable energy among large industrial nations.  The country has the goal of shifting to 100% renewables by 2050.  Its continuing embracing of solar and wind generation resources over the past decade has resulted in renewables supplying a third of the country’s power on average.

[Read more…] about Too Much Of A Good Thing

Japan’s Hydrogen Future

February 22, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2016/02/EW-02-22-16-Japan-Hydrogen-Future.mp3

Japan is a country seeking energy independence as well as environmental credibility.  It has grappled with nuclear disaster at Fukushima and is currently the sixth largest emitter of greenhouse gases in the world.

[Read more…] about Japan’s Hydrogen Future

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