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| Company Name | State | Plant Name | Fuel Type | Alt. Fuel Type | Tech. Type | MW |
| A/C Power-Colver Operations | PA | Colver Power Project | Waste Coal | | | 102 |
| AES Corporation | PA | Beaver Valley | Coal | | ST | 120 |
| AES Corporation | PA | Ironwood | Gas | | CC | 765 |
| Allegheny Electric Cooperative* | PA | Raystown Hydroelectric Project (Matsen) | Water | | | 21.7 |
| Allegheny Energy Supply* | PA | Armstrong Generating Station | Coal | | ST | 380 |
| Allegheny Energy Supply* | PA | Chambersburg Gen. Facility, AE Units 12&13 | Gas | | SC | 88 |
| Allegheny Energy Supply* | PA | Gans Gen. Facility, AE Units 8&9 | Gas | | | 88 |
| Allegheny Energy Supply* | PA | Hatfield's Ferry Power Station | Coal | | ST | 1728 |
| Allegheny Energy Supply* | PA | Hunlock Creek Power Station | Gas | | CT | 46 |
| Allegheny Energy Supply* | PA | Lake Lynn Hydroelectric Project | Water | | | 52 |
| Allegheny Energy Supply* | PA | Mitchell Generating Station | Coal | Oil | | 448.8 |
| Allegheny Energy Supply* | PA | Springdale, Units 1,2,3,4 & 5 | Gas | | CC | 628 |
| AmerGen Energy Co. LLC (Exelon) | PA | Three Mile Island | Nuclear | | | 926 |
| Bio-Energy Partners | PA | Lake View Landfill | Other | | | 6.1 |
| Brascan Power | PA | Piney | Water | | | 28 |
| Calpine Corporation | PA | Philadelphia Water Project | Gas | | | 23 |
| Chambersburg Borough Electric Dept | PA | Chambersburg Power Plant | Gas | Oil | IC | 30.47 |
| Cogentrix | PA | Northhampton Generating Station | Waste Coal | | | 134 |
| Cogentrix | PA | Scrubgrass Generating Plant | Waste Coal | | | 83 |
| Colmac Clarion Inc | PA | Colmac Clarion Inc | Waste Coal | | | 32 |
| Community Energy | PA | Bear Creek | Wind | | | 24 |
| Community Energy | PA | Locust Ridge Wind Farm | Wind | | | 26 |
| Competitive Power Ventures Inc. (CPV) | PA | Liverty Electric Power LLC | Gas | | CC | 610 |
| Conectiv Energy | PA | Bethlehem Commerce Plant | Gas | | CC | 1,000 |
| Constellation Energy | PA | Safe Harbor Hydroelectric Plant | Water | | | 417.5 |
| Constellation Power Inc. | PA | Handsome Lake Plant | Gas | | SC | 250 |
| Constellation Power Inc. (50%) | PA | Panther Creek Energy Facility | Waste Coal | | | 95 |
| Corona Power LLC | PA | Sunbury Generating Station | Coal | Oil | ST/GT/IC | 462.5 |
| Covanta Energy Corporation | PA | Delaware Valley Resource Recovery Facility | Other | | | 90 |
| Covanta Energy Corporation | PA | Lancaster County Resource Recovery Facility | Other | | | 35.7 |
| Dominion Generation | PA | Fairless Energy | Gas | | | 1200 |
| Duke Energy | PA | Fayette County Energy Facility | Gas | | CC | 630 |
| Dynegy | PA | Ontelaunee Energy Center | Gas | | CCGT | 545 |
| Exelon Generation Co. LLC* | PA | Cromby Generating Station | Coal | Oil/Nat. Gas | ST | 371 |
| Exelon Generation Co. LLC* | PA | Croydon Plant | Gas | | | 370 |
| Exelon Generation Co. LLC* | PA | Eddystone Generating Station | Coal | Oil/Nat. Gas | ST | 1489.2 |
| Exelon Generation Co. LLC* | PA | Exelon Power Dist. Gen. Group (38 Units) | Oil | Gas | | 1078 |
| Exelon Generation Co. LLC* | PA | Fairless Hills Generating | Other | | ST/S | 60 |
| Exelon Generation Co. LLC* | PA | Limerick Nuclear Gen. Station, Units 1&2 | Nuclear | | | 2462 |
| Exelon Generation Co. LLC* | PA | Muddy Run Hydroelectric Plant | Water | | | 800 |
| Exelon Generation Co. LLC* | PA | Peach Bottom Atomic Power St., Units 2&3 | Nuclear | | | 2364 |
| Exelon Generation Co. LLC* | PA | Schuylkill Generating Station | Oil | | | 175 |
| FirstEnergy Generation Corp.* | PA | Bruce Mansfield Plant | Coal | | ST | 2741.1 |
| FirstEnergy Generation Corp.* | PA | Seneca Pumped Storage Plant | Water | | | 435 |
| FirstEnergy Generation Corp.* | PA | York Haven | Water | | | 19 |
| FirstEnergy Nuclear Operating Co.* | PA | Beaver Valley Power Station | Nuclear | | | 1775 |
| FPL Energy | PA | Meyersdale Wind Power Project | Wind | | | 33 |
| FPL Energy | PA | Mill Run Wind (FPL) | Wind | | | 15 |
| FPL Energy | PA | Somerset Wind Farm | Wind | | | 9 |
| FPL Energy | PA | Waymart Wind Farm | Wind | | | 63 |
| Gas Recovery Services, Inc. | PA | Modern Landfille | Other | | | 9 |
| General Electric Co. | PA | Erie Works Plant | Coal | | | 36 |
| General Electric Co. | PA | Grove City Plant | Oil | | | 10.6 |
| Gilberton Power Co. | PA | John B Rich Power Station | Waste Coal | | | 79.4 |
| Harrisburg Authority | PA | Harrisburg WTE Plant | Other | | | 24.1 |
| Indiana University of Pennsylvania | PA | S.W. Jack Cogeneration Plant | Gas | Oil | | 24.4 |
| Ingenco | PA | Mountain View Landfill | Other | Oil | | 16 |
| Integrys Energy Services, Inc. | PA | WPS Westwood Generation | Waste Coal | | | 30 |
| J.P. Morgan Chase Bank | PA | Liberty Plant | Gas | | CC | 578 |
| Kimberly Clark Corp | PA | Chester Operations | Waste Coal | | | 59 |
| Koppers, Inc. | PA | Koppers Montgomery Cogeneration Plant | Other | | | 10 |
| Merck & Co., Inc. | PA | West Point (PA) Merck Plant | Gas | | | 30.25 |
| Mid-Atlantic Energy Co. | PA | Clairton USX B Plant | Cog-Gas | | ST | 219.75 |
| Mid-Atlantic Energy Co. | PA | Piney Creek LP | Waste Coal | | | 32 |
| Midwest Generation LLC | PA | Homer City (EME) Generation | Coal | | ST | 2012 |
| Mount Carmel Cogen (Owner-Ken Pollack) | PA | Mount Carmel Cogen | Waste Coal | | | 46.5 |
| National Wind Power | PA | Garrett (Somerset County) | Wind | | | 10.4 |
| North American Energy Services Co. | PA | North East Cogeneration Plant | Gas | | CC | 81.8 |
| Northern Star Generation Services Co. | PA | Cambria County Cogen | Waste Coal | | | 98 |
| NRG Thermal, LLC | PA | NRG Energy Paxton LLC | Gas | Oil | | 12.6 |
| P. H. Glatfelter Co. | PA | Spring Grove Flatfelter Cogen Plant | Coal | | | 67.25 |
| PEI Power Corp. | PA | Archbald Power Station | Gas | | CT/ST | 68 |
| Pennsylvania Renewable Resources Assoc. | PA | Conemaugh Saltsburg | Water | | | 15 |
| Pennsylvania Wind Energy | PA | Humboldt Industrial Park | Wind | | | 0.13 |
| PH Glatfelter Co. | PA | Spring Grove Glatfelter Cogeneration Plant | Coal | | | 67.25 |
| Power Systems Operations | PA | Ebensburg Power Co | Waste Coal | | | 48.5 |
| PPL Generation LLC* | PA | PPL Allentown CTG | Oil | | CT | 64 |
| PPL Generation LLC* | PA | PPL Brunner Island | Coal | | | 1434 |
| PPL Generation LLC* | PA | PPL Fishbach CTG | Oil | | CT | 37.2 |
| PPL Generation LLC* | PA | PPL Harrisburg CTG | Oil | | CT | 64 |
| PPL Generation LLC* | PA | PPL Harwood | Oil | | CT | 32 |
| PPL Generation LLC* | PA | PPL Holtwood | Water | | | 107.2 |
| PPL Generation LLC* | PA | PPL Jenkins CTG | Oil | | CT | 32 |
| PPL Generation LLC* | PA | PPL Lock Haven CTG | Oil | | CT | 18.6 |
| PPL Generation LLC* | PA | PPL Lower Mt. Bethel Energy LLC | Gas | | CC | 574 |
| PPL Generation LLC* | PA | PPL Martins Creek (Retirement 2007) | Coal | Oil | ST/GT | 1800.9 |
| PPL Generation LLC* | PA | PPL Montour LLC | Coal | | | 1624.5 |
| PPL Generation LLC* | PA | PPL Susquehanna LLC | Nuclear | | | 2409 |
| PPL Generation LLC* | PA | PPL Wallenpaupack | Water | | | 40 |
| PPL Generation LLC* | PA | PPL West Shore CTG | Oil | | CT | 37.2 |
| PPL Generation LLC* | PA | PPL Williamsport CTG | Oil | | CT | 32 |
| PPL Generation LLC* | PA | Suburban Generation Station c/o Martins Creek | Oil | | | 29 |
| Procter & Gamble | PA | Mehoopany Plant | Gas | | | 53 |
| Reliant Energy Wholesale Group* | PA | Blossburg Plant (Mothball Pending) | Gas | | | 23.6 |
| Reliant Energy Wholesale Group* | PA | Brunot Island Generating Station | Oil | Oil | CC/GT | 291.6 |
| Reliant Energy Wholesale Group* | PA | Cheswick Generating Station | Coal | | | 580 |
| Reliant Energy Wholesale Group* | PA | Conemaugh Power Plant | Coal | Oil | ST/IC | 1883.2 |
| Reliant Energy Wholesale Group* | PA | Elrama Generating Station | Coal | | | 510.3 |
| Reliant Energy Wholesale Group* | PA | FR Philips Generating Station | Coal | | | 411.3 |
| Reliant Energy Wholesale Group* | PA | Hamilton CT | Oil | | | 19.6 |
| Reliant Energy Wholesale Group* | PA | Hunterstown Plant | Gas | | CC | 954.8 |
| Reliant Energy Wholesale Group* | PA | Keystone Generating Station | Coal | Oil | | 1883.2 |
| Reliant Energy Wholesale Group* | PA | Mountain Plant | Gas | Oil | | 53.2 |
| Reliant Energy Wholesale Group* | PA | New Castle Generating Station | Coal | Oil | ST/IC | 352.9 |
| Reliant Energy Wholesale Group* | PA | Orrtanna Plant | Oil | | | 19.6 |
| Reliant Energy Wholesale Group* | PA | Portland Generating Station | Coal | Gas | ST/GT/CT | 620.3 |
| Reliant Energy Wholesale Group* | PA | Seward Generating Station | Waste Coal | | | 521 |
| Reliant Energy Wholesale Group* | PA | Shawnee Generating Station | Oil | | CT | 19.6 |
| Reliant Energy Wholesale Group* | PA | Shawville Generating Station | Coal | Oil | | 631 |
| Reliant Energy Wholesale Group* | PA | Titus Generating Station | Coal | Gas | ST/GT | 260.6 |
| Reliant Energy Wholesale Group* | PA | Tolna Station | Oil | | CT | 53.2 |
| Reliant Energy Wholesale Group* | PA | Warren Power Plant | Gas | Oil | | 137.1 |
| Reliant Energy Wholesale Group* | PA | Wayne | Oil | | | 53 |
| Rohm and Haas Co. | PA | Bristol | Oil | | | 1.5 |
| Schuylkill Energy Resources | PA | St Nicholas Cogeneration Plant | Waste Coal | | | 80 |
| Sithe Energies Inc. | PA | Allegheny Lock & Dam No. 8 | Water | | | 13 |
| Sithe Energies Inc. | PA | Allegheny Lock & Dam No. 9 | Water | | | 17.4 |
| Smurfit-Stone Corp. | PA | Philadelphia Container Plant | Oil | | | 10 |
| Solar Turbines Inc. | PA | York Solar Plant | Gas | | | 70 |
| Suez Energy Generation NA Inc. | PA | NEPCO | Waste Coal | | | 59 |
| Suez Energy Generation NA Inc. | PA | Northumberland Cogeneration Facility | Other | | | 18 |
| Sunoco Inc | PA | Marcus Hook Cogen Power Plant | Other | | | 50.5 |
| Sunoco Inc | PA | Marcus Hook Cogeneration Plant | Gas | | CC | 836.1 |
| Temple University | PA | Temple Univ. Standby Electric Gen. Facility | Gas | | | 16 |
| Tenaska Power Fund LP (TPF) | PA | Armstrong Energy LLC | Gas | | GT | 688 |
| Tractebel Power Inc. | PA | NEPCO | Waste Coal | | | |
| Tractebel Power Inc. | PA | Northumberland Cogeneration Facility | Other | | | |
| Trigen Energy Corp. | PA | Grays Ferry Power Plant | Gas | | CC | 174.6 |
| Trigen Energy Corp. | PA | Pennsylvania House Power Plant | Other | | | 0.1 |
| UGI Development Co.* | PA | Hunlock Creek Power Station | Coal | Oil | | 50 |
| Veolia ES Waste-to-Energy Inc | PA | Montenay Montgomery LP | Other | | | 32.1 |
| Veolia ES Waste-to-Energy Inc | PA | York County WTE | Other | | | 38 |
| Weyerhaeuser Co (WEYCO) | PA | Bradford (PA) Plant | Coal | Liq | | 52 |
| Wheelabrator Technologies Inc. | PA | Wheelabrator Falls WTE | Other | | | 53 |
| Wheelabrator Technologies Inc. | PA | Wheelabrator Frackville Energy Co. | Waste Coal | | | 48 |
| WM Renewable Energy | PA | Pottstown Plant | Other | | | 6.4 |
| Total MW in PA | | | | | | 49042.4 |