Related by context. Frequent words. (Click for all words.) 57 Clean Energy 56 coal gasification 53 carbon capture 50 Renewable 50 Coal 50 coal 49 IGCC 48 Renewable Energy 47 FutureGen 47 Wind Energy 47 Biomass 46 Energy 46 coal fired 46 Hydrogen 45 Renewables 45 Geothermal 45 Smart Grid 45 Nuclear 44 Electric Power 44 Energy Efficiency 44 Ethanol 43 Nuclear Power 43 carbon sequestration 43 Natural Gas 42 Climate Change 42 cellulosic ethanol 42 Biofuels 42 gasification 42 renewable energy 42 Electric Vehicle 42 Energy DOE 42 smart grid 41 Biodiesel 41 Fuel Cell 41 Alternative Energy 41 Biofuel 41 greenhouse emissions 41 Hydrocarbon 40 Commonwealth Edison 40 Edison Electric 40 Bioenergy 40 renewables 40 Hydropower 40 Gas 39 synthetic fuels 39 Climate Protection 39 Global Warming 39 Rentech 39 ethanol 38 Third Frontier 38 fossil fuel 38 Emissions 38 emission reduction 38 natural gas 38 Power Plants 38 baseload 38 renewable fuels 38 Peabody Energy 38 AEP 38 Clean Air 37 emission reductions 37 reduce carbon emissions 37 Solar Power 37 Low Carbon 37 Climate Action 37 biofuels 37 ComEd 37 carbon emissions 37 alternative fuels 37 Electricity 36 Ameren 36 emissions 36 NorthWestern Energy 36 NEI 36 Emission 36 DOE 36 Commercialization 36 TXU 36 Photovoltaic 36 geothermal 36 Exelon 36 Vectren 36 Renewable energy 36 fracking 36 CIGS 36 RGGI 36 Climate 36 Sempra 36 Energy Efficient 35 Brownfields 35 hydrogen fueling 35 CleanTech 35 Nanotechnology 35 Power Generation 35 Solar 35 Renewable Energy Laboratory 35 coalbed methane 35 NREL 35 electric utilities 35 renewable 35 Arch Coal