The Sustainable Energy Coalition is hosting a big energy expo in D.C. today, and they have assembled a nice collection of interesting factoids about renewable energy. Here are 7 facts about the renewable market you probably didn't know: 

. . . that renewable energy sources provided nearly 10% of both domestic energy production and U.S. electrical generation in 2008 with non-hydro renewable electricity expanding by 17.6% over the previous year; renewable energy will account for about a third of new electricity capacity added to the U.S. grid over the next three years.

. . . . that U.S. wind power grew by 50% in 2008 and accounted for 42% of all new power generation in the United States last year; wind energy could supply at least 20% of U.S. electricity needs by 2030 while avoiding 7.6 cumulative gigatons of carbon dioxide.

. . . . that grid-tied photovoltaic (PV) capacity increased 58% in 2008 and solar water heating capacity increased 40%; the PV industry today is 10 times larger than 1998 and likely to grow by 50% annually in the coming years; solar thermal plants covering an area equal to 9% of Nevada could generate enough electricity to power the nation; solar power is on the verge of reaching cost parity with conventional energy sources.

. . . . that there may be more than 90,000 MW overall of untapped water potential in the United States; through new hydropower technologies, such as advanced turbines, and new applications, such as tidal, wave, ocean currents, and in-stream hydrokinetic approaches, the industry could double its output over the next 20 years.

. . . . that six million Americans are using geothermal energy in their homes – three million receive electricity from geothermal power plants and another three million use geothermal heat pumps to heat & cool their homes; more than 100 new geothermal power projects now under development in 13 states will more than double the county’s geothermal capacity over the next five years.

. . . . that total ethanol capacity expanded 34% and E85 stations exceeded 1,800 in 2008; the fuel now represents more than 7% of the nation’s gasoline supply and can be found in more than 70% of gasoline gallons sold in the U.S.; the 6.5 billion gallons of ethanol produced last year added $47.6 billion to the nation’s GDP; moreover, cellulosic ethanol requirements are projected to boom during the coming decade.

. . . . that biomass is presently the largest U.S. renewable energy source with more than 200 existing biopower plants now providing electricity for 1.5 million American homes; manure-to-energy biogas projects are expanding and could power up to 3% of North America’s electricity needs.

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