Related by context. Frequent words. (Click for all words.) 77 renewable energy 76 renewables 63 renewable 63 Renewable energy 63 biofuels 62 fossil fuels 61 bio fuels 61 renewable fuels 60 alternative fuels 59 photovoltaics 58 fossil fuel 55 energy 55 Renewable Energy 54 biofuel 53 Renewables 53 bioenergy 52 photovoltaic 52 carbon capture 52 reducing carbon emissions 52 solar thermal 51 solar 51 hydropower 51 biomass 50 Renewable 49 reduce carbon emissions 49 solar PV 48 cellulosic ethanol 48 gigawatts 48 smart grid 47 climate change 47 wind farms 47 emission reduction 47 ethanol 47 zero emission 47 desalination 47 bioethanol 47 offshore wind 46 biogas 46 Biofuel 46 liquid fuels 46 smart metering 46 solar photovoltaic 46 reduce greenhouse gas 46 cleantech 45 bio diesel 45 greenhouse emissions 45 carbon dioxide emissions 45 greenhouse gases 45 solar cells 45 hydrogen 45 Alternative Energy 45 Energy Efficiency 44 organic farming 44 Clean Energy 44 biodiesel 44 Masdar 44 greenhouse gasses 44 greenhouse gas emissions 44 petrochemicals 44 agriculture 44 carbon sequestration 44 carbon emission 44 electricity 44 Wind Energy 43 greenhouse gas emission 43 desalination plants 43 nanotechnology 43 hydroelectric 43 Smart Grid 43 CO2 emissions 42 E.ON 42 RWE 42 cogeneration 42 cleaner burning 42 environmentally sustainable 42 hydrogen powered 42 sustainable 42 photovoltaic solar 42 Biofuels 42 global warming 42 Hydrogen 42 reducing greenhouse gas 42 carbon emissions 42 feedstocks 42 emission reductions 41 wind turbines 41 Vattenfall 41 Climate Change 41 hydro 41 coal fired 41 Enel 41 rural electrification 41 EVs 41 bilateral cooperation 41 Biomass 41 coal 41 geothermal 41 solar panels 41 internal combustion engines 41 Areva 40 environmentally friendly