Coal is one of the biggest sources of greenhouse gas emissions in the world. The good news is that coal’s share of monthly power generation in the U.S. decreased to below 40 percent in November and December 2011, according to the U.S. Energy Information Administration (EIA). The last time coal’s share of total generation fell below 40 percent for a monthly total was March 1978.
The EIA attributes the decrease in coal to the increasing competitiveness of natural gas. Natural gas prices dropped “significantly” this winter. However, there is another contributing factor: over a hundred, 106 to be exact, coal plants closed between January 2010 and February 2012. The latest coal plants to close are in Chicago, the Fisk Plant and the Crawford Plant. The number of coal plants closed represents 162 million tons of carbon a year (nine percent of the U.S. vehicle fleet).
There is more good news. Renewable energy generation is increasing, EIA data also shows. The EIA forecasts that renewable energy will account for 33 percent of the overall growth in electricity generation from 2010 to 2035.
Wind power, according to the EIA, has been the fastest growing sources of new electric power generation for several years. In 2010, wind power generation increased 28.1 percent over 2009. Previous years also saw major gains: 2008 had 33.4 percent gains, 2008 had 60.7 percent gains and 2006 had 49.3 percent gains.
The Renewables 2011 Global Status Report revealed that renewable energy production increased in the U.S. in 2010. The U.S. became one of the top five countries for non-hydro renewable power capacity by the end of 2010, and in 2010, renewable energy accounted for an estimated 25 percent of electric capacity additions in the U.S. By the end of the year, renewable energy accounted for 11.6 percent of existing electric capacity. Renewables accounted for 10.9 percent of U.S. energy production in 2010, an increase of 5.6 percent in 2009. Consider that nuclear accounted for 11.3 percent.
The U.S. is one of the top five countries for hydropower capacity, and leads the world in total biomass power generation. The U.S. had significant increases in biomass use for power production in 2010. The U.S. also has the third largest photovoltaic (PV) market, after Europe and Japan.
Clearly things are moving in the right direction if we want to keep temperature increases to two percent Celsius, which is recommended by climate experts.
Photo credits: Flickr user, Photo Domain Credits
Gina-Marie is a freelance writer and journalist armed with a degree in journalism, and a passion for social justice, including the environment and sustainability. She writes for various websites, and has made the 75+ Environmentalists to Follow list by Mashable.com.