renewables
Environmental Impact of Wind Power
A recent study by Harvard University researchers published in two papers looked at the environmental impact of installing sufficient wind power to meet all the energy needs of the US. While doing so would be far better for the environment than burning coal, it would not have negligible impacts.
California vs. Fossil Fuels
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.
Global Warming And Air Conditioners
All those record high temperatures around the world this summer – such as during the unprecedented heatwave in Japan – put the spotlight on the growing dependence we all have on air conditioning.
Clean Power Is Not Enough
A recent study published in Nature Climate Change looked at what emission reductions are needed to meet the climate targets of the Paris Accords. The results are sobering.
The Future Of Energy
A new report by Bloomberg New Energy Finance takes a long-term look at the world’s energy production. According to the report, renewable energy, mostly in the form of solar and wind power, is set to provide close to 50% of the world’s energy by the year 2050.
Fighting Methane With Bacteria
Bacteria may have an important role to play in the effort to reduce greenhouse gas emissions. A group of researchers at the University of Alberta are genetically engineering non-hazardous bacteria that consume methane and turn it into fuel.
Investing In Solar Power
The total amount of solar power capacity installed in the world reached 100 gigawatts in 2012. Getting to that amount took decades. But things have changed in dramatic fashion in recent years.
Greenhouse Gas Emissions Rising Again
If we want to avoid drastic global warming this century, we need to sharply reduce greenhouse gas emissions over time. For the previous three years, emissions had been holding steady, but last year, global emissions from the use of coal, oil and natural gas increased by 1.4%. According to the International Energy Agency, this unfortunate new data should serve as a strong warning that we need to increase our efforts to combat climate change.
Renewable Energy From Wood
Biofuels are fuels produced through contemporary biological processes rather than geological processes such as those involved in the formation of fossil fuels.
A Giant Wind Farm for Oklahoma
American Electric Power (AEP) is investing $4.5 billion to build the largest wind farm in the United States at a site in the Oklahoma panhandle. Known as the Wind Catcher Energy Connection, the 2-gigawatt wind project will include 800 2.5-megawatt wind turbines built by General Electric.
Renewable Powered Cities
Cities are responsible for 70% of the world’s energy-related CO2 emissions and it appears that they are taking responsibility for reducing them. Over 7,000 mayors around the world have signed up to the Global Covenant of Mayors for Climate and Energy, thereby pledging to act on climate change.
Renewables In Texas
When we think about Texas, we think of oil and conservative politics. But Texas is also earning a reputation as a leading state for integrating renewable energy into its electric grid.
Renewables Beat Out Coal In Europe
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.
U.S. Offshore Wind Powering Up
After many years of false starts and delays, the offshore wind industry in the U.S. finally seems to be gaining momentum. According to the Department of Energy, more than 25 offshore wind projects with a generating capacity of 24 gigawatts are now being planned. Most of these are off of the Northeast and Mid-Atlantic coasts.
Major Investments In Solar Power
There is big money going into renewable energy and energy-smart technologies and half of that is going into solar power. In 2017, global investments in green energy reached $334 billion and $161 billion of that was in solar.
A Carbon Loophole
Many power plants in Europe and elsewhere are replacing coal with wood. For example, the Drax Power Station in Britain was its largest coal-burning plant and is now using wood pellets shipped from the southern U.S. in its boilers. According to the carbon accounting rules at the EU and elsewhere, the process is considered to be “carbon neutral.” But is it?
The idea is that new trees are being planted in the forests where the trees are cut to be burned in power plants. So, there is carbon neutrality. In principle.
European countries have embarked on a massive effort to switch to generating power from renewable energy. While there has indeed been major growth in wind and solar power in the 28 countries of the European Union, much of the new “green” power has come from burning wood in converted coal power stations.
A group of 200 scientists wrote to the EU last September insisting that bioenergy from forest biomass is not carbon neutral and that there must be tighter rules to protect forests and their carbon. Wood burning has become a loophole in controlling carbon emissions.
There are problems with the claims of carbon neutrality. There is no way to know whether enough new trees are actually being planted to replace those being burned. And then there is the time lag for tree replacement. Trees don’t grow overnight. There are also the carbon emissions associated with harvesting, processing and transporting wood.
There are most certainly ways in which burning biomass can be carbon neutral and can represent real progress over the use of fossil fuels. But caution must be taken to avoid exploiting loopholes in current climate rules that might actually result in increased carbon emissions.
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Carbon Loophole: Why Is Wood Burning Counted as Green Energy?
Photo, posted April 26, 2014, courtesy of Flickr.
‘A Carbon Loophole’ from Earth Wise is a production of WAMC Northeast Public Radio.
