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(Click for frequent words.) 70 greenhouse gas emitting 66 CO2 emitting 64 fossil fuel 64 carbon emission 62 carbon emissions 62 fossil fuels 61 greenhouse gas emissions 61 emissions 60 carbon dioxide emissions 60 polluting 59 greenhouse gases 59 emission 58 carbon dioxide emission 58 CO2 emissions 58 CO2 emission 57 greenhouse emissions 57 carbon 56 CO -2 emissions 56 reduce carbon emissions 56 greenhouse emission 56 greenhouse gas 56 emission reduction 56 greenhouse gas emission 56 emitting CO2 55 carbon dioxide CO2 emissions 55 reducing carbon emissions 55 carbon emitters 55 renewables 55 C# emissions 55 emission reductions 55 greenhouse gasses 55 GHG emissions 55 emit carbon dioxide 55 carbon emission reductions 55 renewable energy 54 polluting fossil fuels 54 emmissions 54 greenhouse gas GHG emissions 54 greenhouse gas emitters 54 GHG emission reduction 53 emitting greenhouse gases 53 Emissions 53 cleaner fuels 53 emmisions 53 decarbonise 53 GHGs 53 renewable 53 GHG emission 53 CO2 emitted 53 Co2 emissions 53 carbon emmissions 52 emit CO2 52 emitting carbon dioxide 52 decarbonised 52 CO2 52 decarbonizing 52 environmentally damaging 52 GHG emitting 52 biofuels 52 reducing CO2 emissions 52 noncarbon 52 greenhouses gases 52 decarbonising 51 decarbonisation 51 biofuel 51 GhG emissions 51 polluting industries 51 emit greenhouse gases 51 bio fuels 51 GHG reduction 51 greenhouse gas GHG 51 gas guzzling 51 co2 emissions 50 carbon dioxide CO2 emission 50 emmission 50 emissons 50 greenhouse gas emission reductions 50 carbon dioxide emitted 50 nonpolluting 50 CO2 emmissions 50 heat trapping gases emitted 50 polluters 50 GHG abatement 50 carbon emitter 50 GHG 50 carbondioxide emissions 50 Carbon dioxide emissions 50 alternative fuels 50 GHG emitters 50 biomass combustion 49 sulfur fuels 49 zero emission 49 dirtiest fossil 49 coal fired 49 pollutant emissions 49 smog forming pollutants 49 burning fossil fuels 49 carbon dioxide 49 greenhouse gas GHG emission 49 de carbonizing 49 polluter 49 renewable energies 49 CO ² emissions 49 renewable fuels 48 emitters 48 tailpipe CO2 emissions 48 greenhouse gases GHG 48 harmful tailpipe emissions 48 CO ² 48 nonrenewable sources 48 global warming gases 48 finite fossil fuels 48 environmentaly friendly 48 carbon dioxide emitters 48 carbon emitted 48 GHG emission reductions 48 petrol guzzling 48 greenhouse gases emitted 47 CO2 emitters 47 decarbonize 47 Co2 47 emitting 47 Propane autogas 47 liquefied coal 47 feebates 47 internal combustion engine 47 smog forming emissions 47 tailpipe exhaust 47 stringent emission 47 heat trapping gases 47 de carbonisation 47 greenhouse gases GHGs 47 #g CO2/km [001] 47 Industrialised countries 47 renewably 47 heat trapping greenhouse gases 47 Stephan Singer 47 heat trapping carbon dioxide 47 renewably generated 47 GHG greenhouse gas 47 hydrofluorocarbons HFCs 46 warming gases 46 biodiesel fuels 46 environmentally friendly 46 CO2 emitter 46 ozone depleting refrigerant 46 carbon belching 46 greenhouse gasses emitted 46 greenhouse gas emitter 46 nitrogen oxide NOx emissions 46 baseload electricity 46 pollutive 46 CO2 emission reduction 46 biomass 46 carbon dioxide CO2 emitted 46 de carbonise 46 baseload renewable 46 emit pollutants 46 ethanol 46 nitrogen oxides NOx emissions 46 greenhouse polluter 46 exhaust emissions 46 emit greenhouse gasses 46 nonfossil fuel 46 pollutants emitted 46 ghg emissions 45 heat trapping pollutants 45 coalfired 45 carbon dioxide CO2 45 #g CO2/km [002] 45 carbon footprints 45 smog forming 45 nonpolluting renewable 45 biosequestration 45 curbing greenhouse gases 45 particulate matter emissions 45 coal 45 HFC refrigerants 45 gas guzzling cars 45 CO2 Emissions 45 ozone depleting compounds 45 incandescent lightbulbs 45 IGCC plants 45 tailpipe emissions 45 gasifying coal 45 fossile fuels 45 safest cleanest 45 Kyoto signatories 45 Carbon Emissions 45 carbon neutral 45 NOx 45 Emission Trading Scheme 45 reduce greenhouse gasses 45 energy 45 Greenhouse gasses 45 smog forming pollution 45 decarbonization 45 hybrids plug ins 44 Fossil fuels 44 House Gases GHGs 44 CO -2 44 curbing carbon emissions 44 diesel 44 #g/km CO2 [002] 44 synthetic fuels 44 economywide cap 44 Tailpipe emissions 44 windpower 44 Gas Emissions 44 nuclear fission reactors 44 NOX emissions 44 emis sions 44 particulate emissions 44 pollution 44 de carbonize 44 sectoral crediting 44 potent greenhouse gas 44 HFC #a 44 biofuel blends 44 greenhouse emitters 44 guzzling appliances 44 carbon dioxide emitter 44 CAFÉ standards 44 Renewable energy 44 horribly inefficient 44 gaseous emissions 44 internal combustion 44 Greenhouse Gas 44 gas guzzling vehicles 44 cellulosic fuels 44 nitrous oxide emissions 44 hydrogen powered 44 conventional combustion engines 44 heat trapping emissions 43 HCFC 43 fuel guzzling 43 conventional internal combustion 43 carbon footprint 43 CO2emissions 43 SO2 emissions 43 regulate greenhouse gases 43 carbon dioxides 43 propane autogas 43 fission reactors 43 Siddharth Pathak 43 dirtier fuels 43 bovine flatulence 43 co2 43 mercury emitted 43 sulfur diesel fuel 43 cleaner burning 43 Co2 emission 43 diesel powered 43 climate change 43 CO ₂ emissions 43 diesel particulate emissions 43 exhaust emission 43 CAFE standards 43 spew pollutants 43 zero tailpipe emissions 43 bio diesels 43 carbon offsets 43 environmentally unfriendly 43 fuel efficent 43 NOx emissions 43 nonrenewable fuels 43 Internal combustion engines 43 environmentally harmful 43 pollutant emission 43 Jan Kowalzig 43 usual BAU 43 Cellulosic ethanol 43 negawatts 43 renewable feedstocks 43 biodiesel 43 Coal gasification 43 forest thinnings 43 global warming gasses 43 enery 43 bio diesel 43 cellulose ethanol 43 Greenhouse gases 43 agro fuels 43 papal indulgences 43 emit GHGs 43 HFC# 43 EITE industries 43 electrically powered vehicles 43 environmentally sound 43 carbon credits 42 GHG reductions 42 heat trapping gasses 42 carbon polluter 42 flexfuel 42 EROEI 42 CO2 emission reductions 42 pollute 42 #g/km CO2 [001] 42 Carbon Dioxide CO2 emissions 42 reduce NOx emissions 42 carbon capture 42 CO ₂ 42 CO2/km 42 Carbon dioxide CO2 42 corn ethanol 42 heaviest polluters 42 agrofuels 42 environmentally sustainable 42 liquefying coal 42 Carbon dioxide emission 42 perfluorocarbons 42 Burrard Thermal 42 GHG emitted 42 emitting greenhouse gasses 42 Kyoto Treaty 42 gas guzzling SUVs 42 polluting gases 42 leaded petrol 42 rapidly industrializing nations 42 gas guzzlers 42 cap andtrade 42 liquid fuels 42 tailpipe emission 42 geo sequestration 42 biodiesels 42 EVs 42 heat trapping carbon emissions 42 inefficient incandescent bulbs 42 ozone depleting 42 greenhouse gas emmissions 42 Kyoto Protocols 42 quantified emission 42 bioethanol 42 harmful gases emitted 42 Concentrating solar 42 emits greenhouse gases 42 CO2e emissions 42 alternative energies 42 Compressed natural 42 cleaner greener 42 nitrous oxide N2O 42 ZEVs 42 Renewable fuels 42 vehicles EVs 42 gas guzzling behemoths 42 Kyoto Protocol 42 biomass fuels 42 environmentally destructive 42 Verified Emission Reductions 42 polution 42 Greenhouse Gas Emissions 42 WtE 42 soot pollution 42 depletable resources 42 biggest polluter 42 CO2e 42 Fuel Obligation 42 economically ruinous 42 fuelish 42 de carbonization 42 Franziska Achterberg 42 enrgy 42 ratify Kyoto 42 hydrofluorocarbon HFC 42 DRIVe 42 petrol guzzlers 42 tar sands 42 noxious pollutants 42 Deron Lovaas 42 hydrogen 41 PZEVs 41 global warming gases emitted 41 cow farts 41 internal combustion engines 41 Solartopia 41 Ford Fiesta ECOnetic 41 sulfur dioxide SO2 nitrogen 41 House Gases GHG 41 Sugarcane ethanol 41 nitrous oxides 41 Renewable Obligation Certificates ROCs 41 gasified coal 41 CHAIRMAN CONNAUGHTON Well 41 offshore windpower 41 HFCs 41 pyrolysis oils 41 sub #g/km CO2 41 hybrid drivetrains 41 decarbonized 41 Kyoto Accord 41 heat trapping pollution 41 Fossil Fuel 41 manmade CO2 emissions 41 wind turbines solar panels 41 cleanest fossil 41 Polluting 41 Carbon Dioxide 41 dioxide emissions 41 greenpower 41 analyst Jens Riese 41 tailpipe pollutants 41 greenhouse polluters 41 switchable batteries 41 IGCC 41 emission allowances 41 breeder reactors 41 harmful pollutants 41 emission offsets 41 guzzlers 41 operate inefficiently 41 Transport Fuels Obligation 41 baseload 41 heat trapping greenhouse gas 41 fluorinated gases 41 NOx nitrogen oxides 41 nitrogen oxide emissions 41 Carbon offsetting 41 nonrenewable fossil fuels 41 legally binding pact obligating 41 hydrogen fuel 41 carbon offsetting 41 treehuggers 41 Coleson Cove 41 nonfossil 41 harmful gases 41 depleting fossil 41 Flexifuel 41 cleanest burning 41 smokestack pollutants 41 hybrid powertrains 41 Phyllis Cuttino director 41 reducing greenhouse gas 41 nitrogen oxides NOx 41 Fast breeder reactors 41 Global Warming Potential GWP 41 nitrous oxide NOx emissions 41 Association IETA 41 newly industrializing 41 Greenhouse Gas GHG emissions 41 gobar gas 40 Renewable Portfolio Standards 40 hydrogen combustion engine 40 Waxman Markey 40 electric drivetrains 40 nitrogen oxide NOX 40 Ann Mesnikoff director 40 Climate Change 40 sequestering CO2 40 smokestack industries 40 ecofriendly 40 diesel particulates 40 GHG mitigation 40 smallest ecological footprint 40 quadricycles 40 emit #g/km 40 Meri Pori 40 cellulosic ethanol 40 synfuels 40 global warming 40 Zero Carbon 40 nitrogen oxide 40 sulfur dioxide pollutant 40 pollutions 40 efficient lightbulbs 40 ECOnetic 40 emit 40 environmentally benign 40 ozone depleting chemicals 40 Burning fossil fuels 40 enviro nuts 40 kilowatt microturbine 40 nonpetroleum 40 ethanols 40 combustion engines 40 legally binding emission 40 MACT standards 40 peakers 40 LPG CNG 40 Kyoto accord 40 environmentally beneficial 40 Econetic 40 combustion 40 dung charcoal 40 agrofuel 40 DBCCA 40 allowances EUAs 40 air pollutants emitted 40 greener 40 enviro friendly 40 quadrillion BTUs 40 industrialized 40 Bio SNG 40 smog belching 40 sulfur diesel 40 enegy 40 reduce greenhouse gas 40 Nitrogen oxide emissions 40 Industrialized nations 40 PHEVs 40 algae biofuel 40 programmatic CDM 40 sulfur dioxide SO2 40 nonroad diesel 40 EMISSIONS 40 mercury emissions 40 Kyoto protocol 40 sub-#g/km CO2 40 mandatory emission reductions 40 Bio fuels 40 emit sulfur dioxide 40 exajoules 40 Emissions Trading Scheme 40 petrodiesel 40 diesel particulate filters DPFs 40 hydrochlorofluorocarbon 40 buckypaper composites 40 Monbiot 40 smog forming nitrogen oxides 40 Kaisa Kosonen 40 manmade greenhouse gas 40 commissioner Stavros Dimas 40 cellulosic 40 cleaner quieter 40 Carbon dioxide emitted 40 Fischer Tropsch fuels 40 Bluetec diesel 40 diesels 40 industrializing nations 40 ozone depleting substance 39 feebate 39 Nitrogen oxides 39 Carbon offsets 39 ecologically destructive 39 BEVs 39 Major Economies Forum MEF 39 coal liquification 39 Emilie Moorhouse 39 unburned hydrocarbons 39 biofueled 39 Biofuel 39 ratified Kyoto 39 levelised cost 39 burning gaseous fuels 39 nitrogen oxide burners 39 regulate GHGs 39 LCOE 39 emit carbon monoxide 39 Bioethanol 39 harnessing tidal 39 hydroelectric thermoelectric 39 peaker plants 39 hydrofluorocarbons HFCs perfluorocarbons PFCs 39 polluting factories 39 sulfur dioxide SOx 39 tpy CO2e 39 inefficient lightbulbs 39 Nitrogen Oxide NOx 39 emits #g/km [001] 39 Carbon Emission 39 inefficient incandescent light 39 CarbonSMART ™ enterprise 39 Carbon Reduction Commitment CRC 39 nitrogen oxides particulate matter 39 mercury sulfur dioxide 39 carbon dioxide emission reductions 39 TSX WPT 39 Flexible Fuel Vehicles 39 geothermal hydro 39 NASDAQ WPRT global 39 FCVs 39 Carbon Sequestration Leadership 39 gassification 39 coal gasification 39 Parabolic trough 39 nitrous oxide emission 39 fuels 39 MANILA Philippines Poorer 39 solar panels windmills 39 Carbon dioxide CO2 emissions 39 carbon neutrality 39 Renewable Energy Directive 39 lignocellulosic ethanol 39 eco friendly 39 Borroni Bird 39 gases blamed 39 smokestack scrubbers 39 hydrofluorocarbons 39 weans itself 39 particle filters 39 economywide 39 nitrogen oxides 39 biogases 39 integrated gasification 39 politically infeasible 39 FFVs 39 Compact Fluorescent Lamps CFLs 39 Andrew J. Littlefair 39 biogenic emissions 39 Ailun Yang 39 Climate Action 39 CO2 equivalents 39 microgeneration technologies 39 Low Carbon 39 cellulostic ethanol 39 automobiles 39 installing scrubbers 39 HFCs perfluorocarbons PFCs 39 Sauven 39 regulating GHGs 39 flexfuel vehicles 39 aftertreatment systems 39 urea injection 39 fume spewing 39 oilsands extraction 39 air pollution 39 Beacon flywheels 39 Christopher Flavin 39 #g/km CO2 emissions 39 tidal barrages 39 greenie 39 GNEP 39 CO2 emission allowances 39 geosequestration 39 UNFCC 39 carbon dioxide CO ² 39 Sunita Narain 39 industrialising 39 Zero Emission Vehicle ZEV 39 sulfur dioxide SO2 emissions 39 NExBTL 39 Jim Crouse Capstone 39 stabilizing atmospheric concentrations 39 windmills solar panels 39 algae biomass 39 gas guzzling autos 39 particulate emission 39 guzzling SUVs 39 cleanest diesels 39 Tritium occurs naturally 39 Ethanol 39 Volatile Organic Compound VOC 39 RenDiesel ® 39 Renewables Directive 39 ODSs 39 sulfur sub bituminous 39 Tribute HEV 39 King CONG 39 NOx SOx 39 harmful byproducts 38 Certified Emission Reduction CER 38 solar panels wind turbines 38 CO2 SO2 38 ethanol bio diesel 38 lpg 38 greenhouse gas polluter 38 biopower 38 SOx emissions 38 nonrenewable resources 38 greehouse gas 38 fuel 38 ozone depleting gases 38 heat trapping greenhouse 38 elemen 38 hybrid electric 38 Mtoe 38 enviromentally friendly 38 Biomass gasification 38 Emission Reduction Units 38 Incandescent bulbs 38 Waxman Markey bill 38 cleanest greenest 38 converting cellulosic biomass 38 Global Warming Pollution 38 smog soot 38 regulating tailpipe emissions 38 smoke belching 38 sulfur dioxide pollution 38 GHG permitting 38 tree hugger 38 mandatory NERC CIP 38 Hythane R 38 endorses halving 38 particulate matter emitted 38 nonfossil fuels 38 gases emitted 38 motorisation 38 compact fluorescent lightbulbs 38 SUVs MPVs 38 supercritical 38 biodeisel 38 Hydrogen 38 Carbonfund 38 hydro biomass 38 Kyoto Accords 38 Frank Mastiaux 38 BAU scenario 38 Sakihito Ozawa 38 deisel 38 combustion engine 38 efficient cookstoves 38 gas guzzling trucks 38 sulfur dioxide emissions 38 Certified Emission Reductions CERs 38 hoofed critters 38 modal shift 38 byproduct HFC 38 environmentally friendlier 38 Carbon Capture 38 sulfur dioxides 38 biowaste 38 carbon dioxide emmissions 38 hydrochlorofluorocarbons 38 largest polymers petrochemicals 38 coalfired power 38 effiency 38 tree huggers 38 seawalls irrigation 38 Renewables Obligation RO 38 HCNG 38 Tove Maria 38 pollutant 38 Steve Prucnell builds 38 greenest 38 PEVs 38 Speed limiters 38 bio ethanol 38 pure electrics 38 ownership unbundling 38 carbon emission allowances 38 Kim Carstensen WWF 38 Renewable Transport 38 Alberta tar sands 38 Emissions Trading Scheme ETS 38 ecologically sound 38 diesel gensets 38 electrically powered 38 Amory Lovins 38 particulate soot 38 enviro 38 carbon dioxide equivalent CO2e 38 mercury pollution 38 RTFO 38 hybrids PHEVs 38 ungreen 38 Climate Change UNFCC 38 Particulate Matter PM 38 NGVs 38 reducing greenhouse gasses 38 fuel guzzling SUVs 38 ZENNergy technologies 38 sequester carbon emissions 38 SNALP encapsulates siRNAs 38 gasohol 38 Solartopian 38 certified emission reductions 38 negative externalities 38 algae biofuels 38 greenhouse gas HFC 38 ULEV II 38 nitrogen oxide NOx 38 gas guzzling SUV 38 verified emission reductions 38 cow flatulence 38 oxy combustion 38 John Sauven 38 Industrialized countries 38 Fischer Tropsch process 38 Renewable energies 38 soot belching 38 purchasing carbon offsets 38 CO2 eq 38 AT PZEV 38 Vilas Muttemwar 38 Renewables 38 propane Autogas 38 ICEs 38 mechanism CDM 38 stabilize atmospheric concentrations 38 gas guzzler 38 SCR Selective Catalytic Reduction 38 harmful gasses 38 Great Lakes steamships 38 supercritical coal 38 HCFC refrigerants 38 Carbon Reduction Commitment 38 eco unfriendly 38 GHG concentrations 38 sequester greenhouse gases 38 better conservers 38 baseload generation 37 Clear Skies Initiative 37 Tropical deforestation 37 Phyllis Cuttino 37 thermochemical processing 37 economically unsound 37 hydel thermal 37 harmful particulates 37 combating global warming 37 ghg 37 Tinskey 37 sulfur coal 37 Sources Vilas Muttemwar 37 glorified golf carts 37 stricter emission 37 Hythane 37 halting deforestation 37 autogas 37 ozone depleting chlorofluorocarbons 37 Marlo Raynolds executive 37 inefficient boilers 37 gaseous fuels 37 gas guzzling Hummer 37 highly scalable biocatalytic 37 ecological footprint 37 environmentally 37 unburnt fuel 37 Sven Teske 37 Nuclear fission 37 alternatively fueled 37 microgeneration 37 GHG emitter 37 GHGs emitted 37 IPPC directive 37 solar geo thermal 37 Pickens Plan 37 Integrated Gasification Combined Cycle 37 polymers petrochemicals 37 Rams Chevrolet Silverados 37 polluting megawatt 37 CanWEA 37 anthropogenic emissions 37 #ppm CO2 37 Emission 37 electricy 37 nonroad engines 37 Carbon Dioxide Emissions 37 flex fuel 37 cellulosic biofuels 37 Industrialised nations 37 NT Plasmatron 37 feedstocks 37 biomass biogas 37 SULEV 37 hydrocarbon fuels 37 multinational corporations 37 Kyoto Protocol obliges 37 woody biomass 37 GhG 37 cheapest cleanest 37 Bio DME 37 WBCSD 37 curbing heat trapping 37 AP6 37 Vehicles FFVs 37 hydrochlorofluorocarbons HCFCs 37 chlorofluorocarbons CFC 37 electric 37 nitrous oxide N2O hydrofluorocarbons 37 E# biofuel 37 ratifying Kyoto 37 Kyoto Protocal 37 Shawn Patrick Stensil 37 nonroad 37 Refrigerants Naturally 37 technologically feasible 37 Ecofys 37 anthropogenic greenhouse gases 37 EfW 37 diesel engines 37 Aluminium smelting 37 animal fats 37 biomethane 37 exhaust aftertreatment systems 37 Deborah Seligsohn 37 carbon dioxide nitrous oxide 37 Cellulose ethanol 37 rank coals 37 baseload generating 37 biofuel feedstocks 37 Flexible Fuel 37 eco warriors 37 Amerigon Climate 37 Renewables Obligation 37 gas milage 37 Kyoto pact 37 circulating fluidised bed 37 Kyoto treaty 37 environmentally considerate 37 gypsum byproduct 37 bioenergy 37 ecological footprints 37 carbons 37 hydro geothermal 37 irreversibly damaging 37 sulfur hexafluoride SF6 37 Pertamax Plus 37 eco 37 global warming denialists 37 trillionth tonne 37 guzzler 37 octane enhancer 37 CO2 sequestration 37 energyefficient 37 coco biodiesel 37 hydrocarbons carbon monoxide 37 topdown command 37 Ozone Depleting Substances ODS 37 Frank Gorke 37 MPGe 37 bio diesel fuels 37 BMW Efficient Dynamics 37 R #A refrigerant 37 ethanol blended 37 evaporative emissions 37 Volkswagen Polo BlueMotion 37 advisor Carol Browner 37 sulfer 37 Reduced Emissions 37 excise duty VED 37 elec tricity 37 Sasol CTL 37 Fossil Fools Day 37 ozone depleting substances 37 Cement kilns 37 Greenhouse Gases GHG 37 g CO2/km 37 Incandescent lamps 37 Volatile Organic Compounds VOC 37 Marcelo Furtado 37 SOx NOx 37 Tar sands 37 globaloney 37 halon 37 #yf 37 Joss Garman 37 Arthouros Zervos 37 gas guzzling Hummers 37 cow enteric 37 levelized cost 37 Flexible Fuel Vehicle 37 zero tailpipe emission 37 MRET 37 edible vegetable oils 37 hydroelectricity 37 tropical deforestation 37 Severn tidal 37 carbon sequestering 37 kWhs 37 megatonne 36 newly industrialising 36 cleanest diesel 36 cogeneration plants 36 Offsetters 36 ecodesign 36 hybrids electrics 36 NExBTL renewable diesel 36 narcissism Twenge 36 petrol engined cars 36 cellulosic feedstocks 36 Alberta oilsands 36 CPRS Carbon Pollution 36 oxyhydrogen 36 gas guzzling automobiles 36 reduce SO2 emissions 36 Haugwitz 36 algal biofuel 36 naturally aspirated engines 36 VOCs Volatile Organic Compounds 36 Ron Dembo 36 EUEC 36 Jim Footner 36 cellulosic biomass 36 Volkswagen TDI 36 Reducing carbon emissions 36 Auris HSD 36 engergy 36 George Monbiot 36 Alternative Fuels 36 deplete ozone 36 environ mentally 36 particulate matter PM 36 Geologic Storage 36 bio butanol 36 bioethanol E# 36 Coequyt 36 LEVs 36 Ben Ayliffe 36 Tar Sands 36 diesel aftertreatment 36 Ecomagination initiative 36 gasifies coal 36 additionality 36 supergrid 36 railbelt 36 Indica EV 36 Mayor Merven Gruben 36 photo voltaic solar 36 cogeneration 36 electrics hybrids