The problems with wind and solar power become apparent when you look at their footprint. To generate electricity comparable to a 1,000 MW gas-fired power plant you‟d have to build a wind farm with at least 500 very tall windmills occupying more than 30,000 acres of land. Then there‟s solar power. I‟m holding a Denver Post article that tells the story of an 8.2 MW solar-power plant built on 82 acres in Colorado. The Post proudly hails it “America‟s most productive utility-scale solar electricity plant”. But when you account for the fact that the sun doesn‟t always shine, you‟d need over 250 of these plants, on over 20,000 acres to replace just one 1,000 MW gas-fired power plant that can be built on less than 40 acres.
The Salt Lake Tribune recently celebrated the startup of a 14 MW geothermal plant near Beaver, Utah. That‟s wonderful! But the Tribune failed to put 14 MW into perspective. Utah has over 7,000 MW of installed generating capacity, primarily coal. America has about 1,000,000 MW of installed capacity. Because U.S. demand for electricity has been growing at 1-2 % per year, on average we‟ve been adding 10-20,000 MW of new capacity every year to keep pace with growth.