http://geology.com/press-release/deep-hydrocarbons/ Forming Hydrocarbons in the Deep Earth Extreme temperatures and pressures can convert methane into complex hydrocarbons Republished from a April 2011 press release by the Lawrence Livermore National Laboratory .
Source: U.S. Energy Information Administration, Form EIA-860 Annual Electric Generator Report , and Form EIA-860M (see Table ES3 in the March 2011 Electric Power Monthly ) Note: Data for 2010 are preliminary. Generators with online dates earlier than 1930 are predominantly ...