Joining natural gas production in the electricity generation winner's circle is non-hydro renewable energy.
The generation market share of non-hydro renewable electricity is up a stunning 43% during the first 4 months of 2012, when compared to the January to April 2010. Wind, solar, geothermal, and biomass power plants provided 4.21% of America's electricity generation from January to April in 2010. Production jumped to 6.00% of the nation's power for the first third of 2012. http://www.eia.gov/electricity/monthly.
When hydro production of 7.78% is added, renewable power facilities produced 13.78% of our electricity from January to April of 2012. That matters to keeping the lights on and keeping electricity prices affordable.
Or to put it another way, America's electricity lights would flicker, and electricity bills would skyrocket, without the 13.78% of power supplies provided by renewable energy.