Related by context. Frequent words. (Click for all words.) 51 Renewable Portfolio Standard 48 sulfur dioxide SO2 48 smokestack emissions 47 GHG emission 47 Clean Air 47 APCo 47 nitrogen oxide emissions 47 electric utilities 46 nitrogen oxide 45 Progress Energy 45 sulfur dioxide emissions 45 emission reductions 44 Fibrowatt 44 Renewable Fuels Standard 44 ratemaking 44 Clean Water Act 44 coal fired 44 involuntary annexation 44 scrubbers 44 Santee Cooper 44 mercury emissions 44 Global Warming Solutions 44 Environmental Quality TCEQ 43 PSNC Energy 43 MACT 43 Renewable Electricity 43 TVA 43 coal gasification 42 emission 42 Clear Skies 42 Jessica Lunsford Act 42 CoaLogix 42 air toxics 42 emission reduction 42 Administrative Procedure Act 42 nitrogen oxides NOx 42 EPA 42 Governor Bev Perdue 42 fleetwide average 42 USEPA 42 Ambient Air 42 General Assembly 42 legislation 42 GHG reduction 42 fine particle pollution 42 ash ponds 42 NOx emissions 42 NOx 42 House Concurrent Resolution 42 Oglethorpe Power 42 National Pollutant Discharge 41 pollutant emissions 41 North Carolina 41 RES 41 Energy NYSE DUK 41 TMDL 41 particulate matter emissions 41 Clean Water 41 Administrative Procedures Act 41 scrubber 41 legislature 41 Exelon Generation 41 Environmental Quality DEQ 41 nitrogen oxides 40 NJDEP 40 Pepco Holdings 40 Elimination System 40 SO2 40 Environmental Protection Agency 40 Presidents Climate Commitment 40 NOx reduction 40 sulfur dioxide 40 Waxman Markey bill 40 RGGI 40 selective catalytic reduction 40 emission allowances 40 mercury pollution 40 Clean Indoor 40 EPRI 40 Waxman Markey 40 nitrogen oxide NOx 40 carbon emission reductions 40 coal gasification plant 40 federally mandated 40 nonattainment 40 nitrous oxides 40 valley fills 40 carbon dioxide emission 40 cleaner burning 39 Renewable 39 flue gas 39 Cinergy 39 emit greenhouse gases 39 Legislature 39 relicensing 39 Vogtle 39 FPL Group 39 electric cooperatives 39 greenhouse gas emission reductions 39 Magnuson Stevens Act 39 Regional Greenhouse Gas