Related by context. Frequent words. (Click for all words.) 70 gasification 70 carbon capture 66 coal fired 65 coal 60 biomass 57 lignite 57 renewable energy 56 Clean Coal 56 carbon sequestration 56 syngas 55 synthetic fuels 55 flue gas 55 Biomass 54 cellulosic ethanol 54 FutureGen 54 hydropower 54 cogeneration 54 geothermal 52 ethanol 52 bioenergy 52 hydroelectric 52 renewable fuels 52 solar thermal 52 liquid fuels 51 biodiesel 51 cellulosic 51 switchgrass 51 natural gas 50 biogas 50 biofuels 50 renewables 50 biofuel 50 feedstock 50 oil sands 50 hydrogen 49 coal seam gas 49 shale gas 49 megawatt 49 alternative fuels 49 baseload 49 coalbed methane 49 thermoelectric 49 wind farms 49 wind farm 49 desalination 49 cleaner burning 48 Rentech 48 CIGS 48 LS Power 48 Renewables 48 coal mining 48 hydro 48 thermal coal 48 fossil fuel 48 hydro electric 48 Renewable Energy 47 digester 47 bio diesel 47 turbines 47 Renewable energy 47 Coal 47 renewable 47 Hydrogen 47 turbine 47 wind turbine 47 Geothermal 47 hydroelectricity 46 solar photovoltaic 46 bioethanol 46 Renewable 46 Peabody Energy 46 thorium 46 wastewater treatment 46 hydrogen fuel 46 upgrader 46 wind turbines 46 Hydropower 45 LNG 45 alternative energies 45 Ethanol 45 sequestration 45 tar sands 45 feedstocks 45 photovoltaic 45 cleaner fuels 45 oilsands 45 liquefied natural gas 45 nuclear reactors 45 shale 45 brownfield 45 photovoltaics 45 solar 45 megawatt solar 45 Biofuels 45 steam turbines 44 Biofuel 44 combustion 44 smart grid 44 reverse osmosis 44 carbon dioxide 44 maglev