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Can Germany Meet Its Energy Goals?

February 4, 2019 By EarthWise Leave a Comment

Germany has been a global leader in efforts to decarbonize its massive economy.  A national initiative known as Energiewende – or clean energy transition – has been in place since 2010 and relies heavily on renewable energy sources, energy efficiency, and energy demand management.

The program has involved some of the most aggressive deployment of renewable energy sources in the world.  Germany was the first country to install 1 GW of solar energy and still has the 5th largest amount of solar power in the world despite actually being a country with fairly limited sunshine.  Germany has nearly 30,000 wind turbines, most of which are onshore, unlike many other countries in northern Europe.  Over the past five years, government support and cost to consumers for the shift to clean energy have totaled over $180 billion.

However, despite these efforts, Germany’s greenhouse gas emissions have not declined as rapidly as expected, even though nearly 40% of the country’s electricity now comes from renewable sources.

This lack of expected success comes as a shock to the environmentally conscious German population, nearly 90% of which supports the program.

There are two major problems Germany faces.  One is that Germany is Europe’s largest producer of coal, which still generates more than a third of the country’s power.  The other is that Germany’s large auto industry is still married to gas- and diesel-fueled cars and emissions from the country’s cars are a big problem.

The Energiewende program was driven by political will and investment certainty.  It is unclear whether Germany can muster these forces again.  The Merkel government has dragged its feet on environmental issues in recent years.  It remains to be seen what effect shifting political power in Germany will have.

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Carbon Crossroads: Can Germany Revive Its Stalled Energy Transition?

Photo, posted August 15, 2011, courtesy of Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Energy Trends For A New Year

January 15, 2019 By EarthWise Leave a Comment

With a new year upon us, there are several energy trends to watch out for.

The most important one is that the fundamental shift toward slow-carbon technologies is continuing. This shift is taking place despite diminishing government policy support and even active government efforts to thwart it.  There is just too much momentum to stand in the way of low-carbon energy technologies.

Analysts at Bloomberg New Energy Finance estimate that over the next 30 years over 11 trillion dollars will be invested in energy power generation and power storage assets with 85% of it aimed at zero-carbon emission.  Dramatic reductions in green energy costs have resulted in legitimate cost competition between zero carbon sources of energy and fossil fuel generation.

In the coming year, battery technology will continue to play a growing role both as a storage medium for energy generated by sun and wind and for powering vehicles.

Another trend is that the world’s wealthiest economies are learning to grow without growing the demand for electricity.  This is important in the battle to reduce overall emissions.

Another key issue is addressing the energy needs of people who have no meaningful access to it and there are around 1.5 billion people in that category.   Emerging technologies based on solar power, wind energy, microgrids and other innovations mean that traditional power grids that remain out of reach to these people are not necessary.  There is the potential to address those needs without contributing to climate change.

The world is struggling to deal with the growing problem of the changing climate, but there are trends that provide at least some hope that we can move in the right direction.

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Top 3 clean energy trends to watch out for in 2019

Photo, posted April 5, 2013, courtesy of Flickr. 

Earth Wise is a production of WAMC Northeast Public Radio.

Can We Remove Enough CO2 From The Air?

January 9, 2019 By EarthWise Leave a Comment

As atmospheric carbon dioxide levels continue to set new records and the effects of climate change grow stronger, humanity has continued to procrastinate on reducing emissions.  As a result, it is increasingly clear that any strategy to avoid runaway climate change will have to involve the use of “negative emissions”- techniques or technologies that actually remove CO2 from the air.

There are both low-tech and high-tech methods for removing carbon dioxide from the atmosphere and both are likely to be needed. 

On the low-tech side, afforestation (planting trees where there were none before), reforestation, changes in forest management, rebuilding the carbon backbone in agricultural soils, and the use of energy from waste biomass are all ways to take carbon out of the atmosphere.

On the high-tech side, direct air capture technologies that take CO2 out of the air and store it in the ground are making rapid progress.   Right now, they are still very expensive,but that is changing.  There is an analogy to wind and solar technology. Not very long ago, both of those technologies were quite expensive but now their costs have plummeted to the point where they are often the cheapest way to make electricity.  With sufficient development effort and deployment, direct air capture technology could become quite affordable.

Some people advocate geoengineering as a solution for climate change.  While removing carbon dioxide amounts to tackling the root cause of the warming climate,geoengineering would address the problem by changing the climate again in some other way.  It is at best an extremely dangerous approach.

Removing CO2 using a combination of natural and man-made techniques is an important part of mitigating the effects of climate change.

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Climate Solutions: Is It Feasible to Remove Enough CO2 from the Air?

Photo courtesy of Climeworks. 

Earth Wise is a production of WAMC Northeast Public Radio.

Big Success From A Big Battery

January 1, 2019 By EarthWise Leave a Comment

In the fall of 2017, Tesla took on the challenge of installing a 100-megawatt battery storage system in South Australia in under 100 days, promising that the system would be free if it was not built in time.  The project was actually completed in 54 days.

The system is located at the Hornsdale Wind Farm, which consists of 99 wind turbines with a generation capacity of 315 MW.  The Hornsdale Power Reserve installation is the world’s largest lithium-ion battery system and, after a year of operation,has proven to be a smashing success. Estimates are that the project has reduced costs associated with stabilizing the energy grid by about $29 million. The cost of the system was about $87 million, so it is paying for itself quite rapidly. The wind farm and battery systems are owned and operated by a French renewable energy company.

The battery storage system provides a variety of different services to the electric grid.  The primary motivation for it was to achieve system security and reduce the risk of blackouts and load shedding.   Having the battery system in place protects the regional interconnection from tripping,which reduces the risk of separation of South Australia from the National Electricity market.  The system also provides so-called ancillary services such as frequency control and other forms of electricity supply regulation.

The most significant contribution of the Hornsdale Power Reserve is that it has raised the profile of energy storage technology and demonstrated its unique capabilities.  Based on the success of the system, there are now about 2,500 MWh of new storage projects announced by the public and private sectors in Australia.

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Web Links

Tesla’s Battery Has Already Saved South Australia a Huge Amount of Money

Photo courtesy of Hornsdale Power Reserve. 

Earth Wise is a production of WAMC Northeast Public Radio.

Powering Africa With The Sun

December 3, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/12/EW-12-03-18-Powering-Africa-With-The-Sun.mp3

There are roughly 600 million people in sub-Saharan Africa who currently live without electric power.  Putting in the infrastructure to supply power to these people in their various countries has been a major economic and logistical challenge.

[Read more…] about Powering Africa With The Sun

Capturing CO2 From The Air

November 9, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/10/EW-11-09-18-Capturing-CO2-from-the-Air.mp3

It is increasingly clear that the rate at which carbon dioxide emissions are being reduced is not sufficient to prevent dire consequences of climate change.  It appears that it will be necessary to try to actually remove carbon dioxide from the air.  Such actions are termed “negative emissions.”

[Read more…] about Capturing CO2 From The Air

Electric Buses On The Rise

November 2, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/10/EW-11-02-18-Electric-Buses-on-the-Rise.mp3

Electric buses are replacing conventional diesel-fueled buses at an accelerating rate that is outpacing the adoption of battery-powered cars.  According to forecasts by Bloomberg New Energy Finance, by 2030 some 28% of car sales will be electric vehicles while 84% of new buses will be electric buses.  So far, some 12 years away, the actual adoption of electric buses is outpacing this optimistic projection.

[Read more…] about Electric Buses On The Rise

Fresh Water From Power Plants

July 24, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/07/EW-07-24-18-Fresh-Water-from-Power-Plants.mp3

A new system developed by MIT engineers could provide a low-cost source of drinking water and simultaneously reduce power plant operating costs.

[Read more…] about Fresh Water From Power Plants

Geothermal Power For LA

February 1, 2018 By EarthWise 1 Comment

https://earthwiseradio.org/wp-content/uploads/2018/02/EW-02-01-18-Geothermal-Power-for-LA.mp3

Los Angeles has a tremendous thirst for electric power and is always trying to find new sources.  On December 1, the Los Angeles Department of Water and Power began buying all the power generated by the brand-new 24 MW Tungsten Mountain geothermal power plant located in Churchill County in Nevada’s Great Basin region.

[Read more…] about Geothermal Power For LA

Delivery By Fuel Cell

June 19, 2017 By EarthWise

https://earthwiseradio.org/wp-content/uploads/2017/06/EW-06-19-17-Delivery-by-Fuel-Cell.mp3

UPS recently announced a demonstration project that will put a prototype electric truck powered by a hydrogen fuel cell through the delivery company’s challenging paces.   Fuel cells have been used in some commercial vehicles to power auxiliary systems, but this is the first time that they will be used to propel a vehicle.

[Read more…] about Delivery By Fuel Cell

Surging Wind Power In The U.S.

June 16, 2017 By EarthWise

https://earthwiseradio.org/wp-content/uploads/2017/06/EW-06-16-17-Surging-Wind-Power-in-the-U.S.-.mp3

So far, it has been a big year for the U.S. wind industry, which experienced its fastest first-quarter growth since 2009.  In total, about 2,000 megawatts of new capacity was installed, enough to power about 500,000 homes.   With this addition, wind now produces 5 1/2% of the country’s electricity.

[Read more…] about Surging Wind Power In The U.S.

A Threat to Rhinos

May 31, 2017 By EarthWise

https://earthwiseradio.org/wp-content/uploads/2017/05/EW-05-31-17-A-Threat-to-Rhinos.mp3

A South African court recently overturned a national ban on the trade of rhinoceros horns – a decision that was celebrated by the country’s commercial rhino breeders but slammed by animal preservation groups.  A moratorium on rhino horn trade had been in effect in South Africa since 2009. 

[Read more…] about A Threat to Rhinos

Saving Bees With Software

April 11, 2017 By EarthWise

https://earthwiseradio.org/wp-content/uploads/2017/04/EW-04-11-17-Saving-Bees-with-Software.mp3

The worldwide decline in the population of bees and other pollinators has impelled farmers to do what they can to encourage and nurture bees on their land.  Protecting bees is important because pollinators are essential for growing many foods including coffee, cacao, almonds and many other fruits and vegetables.

[Read more…] about Saving Bees With Software

Grass-Powered Cars

August 26, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2016/08/EW-08-26-16-Grass-Powered-Cars.mp3

Several major automakers are betting on hydrogen-powered cars as the future of personal transportation.  The first of these cars are already available in California.  What isn’t readily available is the hydrogen to power them.  There are very few hydrogen stations out there and hydrogen is pretty expensive.

[Read more…] about Grass-Powered Cars

Solar Power And Drinkable Water

June 7, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2016/05/EW-06-07-16-Solar-Power-And-Drinkable-Water.mp3

According to a report from the International Food Policy Research Institute, more than half the world’s population will be at risk of water shortages by 2050 if current trends continue.  As the climate continues to change, severe droughts are becoming increasingly commonplace.

[Read more…] about Solar Power And Drinkable Water

Scottish Coal

May 3, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2016/04/EW-05-03-16-Sound-the-Bagpipes.mp3

The Scottish government has an ambitious plan to meet 100 percent of its demand for electricity from renewable sources by 2020.   Like much of the world, Scotland has produced significant amounts of its electricity by burning coal for more than 100 years.  But no longer.

[Read more…] about Scottish Coal

Cutting Down Costs Instead of Trees

December 25, 2015 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2015/12/EW-12-25-15-PaperLab.mp3

Epson, one of the world’s most recognizable printer companies, recently announced a green innovation that could fundamentally change the office. 

[Read more…] about Cutting Down Costs Instead of Trees

Local Food In A Global World

November 12, 2015 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2015/11/EW-11-12-15-Food-Miles.mp3

In the Northeast, many are enjoying the last of autumn’s bounty. When we grow fruits and vegetables, we can choose to forgo pesticides, GMOs, or industrial fertilizer. When we shop at farmer’s markets, we support family farms and help maintain open space that we all enjoy.

[Read more…] about Local Food In A Global World

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