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Largest greenhouse-gas emitters in Pennsylvania

281 facilities in Pennsylvania reported 102,733,194 metric tons CO2e of direct emissions to the EPA for 2023, 4.3% of the national total for reporting direct emitters. Power Plants accounts for the most (68%). Largest first.

#FacilityCitySectort CO2e
1Lackawanna Energy CenterJessupPower Plants3,712,067
2US Steel (Edgar Thomson)BraddockMetals3,576,537
3York Energy CenterDeltaPower Plants3,566,413
4Fairless Energy, LLCFairless HillsPower Plants2,995,199
5Hummel Station LLCSelinsgrovePower Plants, Other2,909,103
6Bailey Mine-Crabapple PortalWind RidgeOther2,817,632
7ConemaughNew FlorencePower Plants2,804,426
8KeystoneSheloctaPower Plants2,778,443
9Bethlehem Power PlantBethlehemPower Plants2,638,013
10Moxie FreedomBerwickPower Plants2,530,181
11CPV Fairview LLCJohnstownPower Plants2,468,430
12Hickory Run Energy StationNew CastlePower Plants2,419,495
13Tenaska Westmoreland Generating StationSmithtonPower Plants2,416,499
14Enlow Fork MineClaysvilleOther2,312,526
15Seward Generation LLCNew FlorencePower Plants2,279,070
16Hamilton PatriotMontgomeryPower Plants2,273,529
17Hamilton Liberty LLCTowandaPower Plants2,267,853
18Marcus Hook Energy Center - MH750Marcus HookPower Plants2,235,379
19Fayette Energy FacilityMasontownPower Plants2,111,450
20Hunterstown Combined CycleGettysburgPower Plants1,953,011
21Helix Ironwood, LLCLebanonPower Plants1,677,037
22Brunner Island, LLCMt WolfPower Plants1,668,140
23Lower Mount Bethel EnergyBangorPower Plants1,658,680
24Iron Cumberland, LLCWaynesburgOther1,636,800
25Liberty Electric Power PlantEdddystonePower Plants1,591,350
26Shell Chemical Appalachia LLCmonacaPower Plants, Chemicals, Other1,579,719
27Ontelaunee Energy CenterReadingPower Plants1,578,806
28Springdale Generating Station (55710)SpringdalePower Plants1,524,942
29Hill Top Energy Center LLCCarmichaelsPower Plants1,441,168
30Harvey MineRichhillOther1,340,377
31Monroe Energy, LLC, Trainer RefineryTrainerRefineries1,213,827
32Homer CityHomer CityPower Plants1,154,482
33St. Nicholas Cogeneration ProjectShenandoahPower Plants1,133,245
34Birdsboro Power ProjectBirdsboroPower Plants1,114,143
35Shawville StationShawvillePower Plants956,343
36Lycoming County Resource Management ServicesMontgomeryWaste902,757
37Colver Green EnergyColverPower Plants897,020
38John B. Rich Memorial Power Station, Gilberton Power CompanyFrackvillePower Plants875,724
39US Steel (Clairton Coke)ClairtonMetals769,566
40Panther Creek Energy FacilityNesquehoningPower Plants760,639
41GRAYMONT PA INC/PLEASANT GAP PLTPleasant GapMinerals742,587
42Grays Ferry Cogen PartnershipPhiladelphiaPower Plants698,236
43Procter & Gamble Paper ProductsMehoopanyPulp and Paper, Waste685,923
44KEYSTONE CEMENT COMPANYBathMinerals684,874
45HEIDELBERG MATERIALS US CEMENT LLC/ NAZARETHNazarethMinerals646,387
46Armstrong Power, LLCSheloctaPower Plants627,235
47United Refining CompanyWarrenRefineries, Chemicals625,206
48Northampton Generating PlantNorthamptonPower Plants606,371
49Heidelberg Materials/EVANSVILLE CEMENT PLT & QUARRYFleetwoodMinerals558,292
50New CastleWest PittsburgPower Plants546,395
51Montour, LLCDanvillePower Plants492,022
52Pixelle Specialty SolutionsSpring GrovePulp and Paper455,778
53Scrubgrass Generating PlantKennerdellPower Plants452,134
54HERCULES CEMENT STOCKERTOWN PLT QUARRYStockertownMinerals438,412
55Versum Materials US, LLCTamaquaChemicals403,544
56Ebensburg Power CompanyEbensburgPower Plants397,402
57Martins CreekBangorPower Plants384,286
58Delaware Valley Resource Recovery FacilityChesterWaste377,550
59US STEEL - IRVIN WORKSWest MifflinMetals362,318
60Rausch Creek Generation LLCTremontPower Plants352,869
61LAFARGE NA WHITEHALL PLANTWhitehallMinerals295,726
62MAGNESITA REFRACTORIES/YORKYorkMinerals275,645
63Cleveland-Cliffs Steel Corporation /BUTLER WORKSButlerMetals, Waste269,985
64Hunlock Creek Energy CenterHunlock CreekPower Plants262,324
65Mt. Carmel CogenerationMarion HeightsPower Plants250,388
66Merck Sharp & Dohme LLCWest PointChemicals236,625
67Pioneer Crossing LandfillBirdsboroWaste233,448
68FIRST QUALITY TISSUE/LOCK HAVEN PLTLock HavenPulp and Paper, Waste212,150
69WHEELABRATOR FALLSMorrisvilleWaste209,656
70Vitro Flat Glass LLCCarlisleMinerals203,651
71Heilwood MineHeilwoodOther184,576
72ARMSTRONG CEMENT & SUPPLYCabotMinerals184,561
73COVANTA PLYMOUTH RENEWABLE ENERGY LLCConshohockenWaste173,115
74YORK COUNTY RESOURCE RECOVERYYorkWaste171,810
75CARPENTER TECHNOLOGYReadingMetals168,155
76Domtar Paper Company, LLCJohnsonburgPulp and Paper165,410
77Pennsylvania Grain Processing, LLCClearfieldOther164,959
78Lancaster Waste to Energy FacilityBainbridgeWaste160,651
79AdvanSix Resins & Chemicals LLCPhiladelphiaChemicals159,664
80Houston Gas PlantWashingtonPetroleum and Natural Gas Systems159,467
81Cleveland-Cliffs Monessen Coke LLCMonessenMetals150,425
82CLEVELAND-CLIFFS PLATE LLC-COATESVILLECoatesvilleMetals150,076
83KIMBERLY CLARK PA LLC/CHESTER OPRChesterPulp and Paper147,529
84ENERGY TRANSFER MARKETING & TERMINALS L.P. - MARCUS HOOK TERMINALMarcus HookPetroleum and Natural Gas Systems144,780
85GROWS LDFL WASTE MGMTMorrisvilleWaste137,859
86Eastern Gas Transmission and Storage - Leidy and Finnefrock Stations (Stor and Tran)RenovoPetroleum and Natural Gas Systems137,148
87Chambersburg Units 12,13ChambersburgPower Plants135,276
88Bluestone Gas Processing PlantEvans CityPetroleum and Natural Gas Systems127,802
89TRANSCO STATION 517BentonPetroleum and Natural Gas Systems125,620
90TRANSCO STATION 607Sweet ValleyPetroleum and Natural Gas Systems125,258
91Cleveland-Cliffs Steelton LLCSteeltonMetals124,747
92AMERICAN REFINING GROUP INCBradfordRefineries122,544
93Lowry MineIndianaOther122,511
94BRACKENRIDGE PLANTBrackenridgeMetals121,704
95Penn State - University ParkUniversity ParkOther118,614
96CONESTOGA LANDFILLMorgantownWaste116,328
97Arconic US LLCLancasterMetals115,844
98SUSQUEHANNA RESOURCE MGMT COMPLEXHarrisburgWaste109,851
99Befesa Zinc US INCPalmertonMetals105,609
100TRANSCO STATION 515Bear CreekPetroleum and Natural Gas Systems98,828
101Knob Creek MineClarksburgOther97,758
102NFGSC ELLISBURG STATIONGenesseePetroleum and Natural Gas Systems97,062
103NLMK PENNSYLVANIA LLCFarrellMetals96,059
104EAST PENN LYONS SMELTER & BATTERY PLTLyon StationMetals92,500
105Crooked Creek MineIndianaOther88,242
106TRANSCO STATION 620HeginsPetroleum and Natural Gas Systems88,104
107US GYPSUM - ALIQUIPPA PLANTAliquippaMinerals87,870
108LEHIGH WHITE CEMENT CO LLCYorkMinerals82,526
109TRANSCO STATION 610MillvillePetroleum and Natural Gas Systems82,084
110INTERNATIONAL WAXES INCSmethportPetroleum and Natural Gas Systems81,080
111Vitro Meadville Flat Glass LLCCochrantonMinerals77,135
112OWENS BROCKWAY GLASS CONTAINER INC. PLT 19BrockportMinerals76,401
113University of Pittsburgh - of the Commonwealth System of Higher EducationPittsburghOther75,463
114DelmontGreensburgPetroleum and Natural Gas Systems72,842
115Gold Bond - SHI PlantShippingportMinerals72,152
116Springdale Generating Station (55196)SpringdalePower Plants71,494
117Gans Generating FacilityLake LynnPower Plants71,022
118Hydro Extrusion USA, LLCCressonaMetals71,010
119Handsome Lake EnergyKennerdellPower Plants70,786
120MODERN LANDFILLYorkWaste69,975
121ARMSTRONG WORLD IND MARIETTA CEILING PLTMariettaOther69,218
122STD STEEL BURNHAM PLTBurnhamMetals68,870
123PerulackEast WaterfordPetroleum and Natural Gas Systems68,711
124LillyLillyPetroleum and Natural Gas Systems66,894
125Bethlehem Landfill CompanyBethlehemWaste66,314
126IPSCO KOPPEL TUBULARS CORP KOPPEL WORKSKoppelMetals66,233
127Blue Ridge Landfill CompanyScotlandWaste65,654
128Brunot Island Power StationPittsburghPower Plants65,476
129CHRIN BROTHERS LANDFILLEastonWaste65,361
130PEI Power CorporationArchbaldPower Plants65,144
131Ardagh Glass Inc. (Port Allegany)Port AlleganyMinerals61,642
132Carpenter Technology - Latrobe OperationsLatrobeMetals61,339
133US GYPSUM - WASHINGTONVILLE PLANTDanvilleMinerals60,897
134Vicinity Energy Philadelphia, Inc - Schuylkill StationPhiladelphiaPower Plants60,479
135Bradford County LandfillTroyWaste60,271
136Peoples/IMG - Pittsburgh International Airport Electric Generating StationMoon TownshipPower Plants58,952
137GrantvilleGrantvillePetroleum and Natural Gas Systems55,789
138Jackson Compressor StationLawrencevillePetroleum and Natural Gas Systems55,761
139SONNEBORN LLC/PETROLIA PLTPetroliaPetroleum and Natural Gas Systems54,717
140Mitsubishi Electric Power Products, Inc.WarrendaleOther54,656
141Jefferson Compressor StationJeffersonPetroleum and Natural Gas Systems53,747
142CLARION BOARDS/CLARION PLTShippenvilleOther53,553
143Pike Compressor FacilityRochesterPetroleum and Natural Gas Systems52,898
144TGP Station 219 MercerMercerPetroleum and Natural Gas Systems52,853
145TGP Station 315 WellsboroWellsboroPetroleum and Natural Gas Systems52,555
146Seneca Landfill, IncorporatedEvans CityWaste52,421
147Eastern Gas Transmission and Storage - Chambersburg Station (Tran)ChambersburgPetroleum and Natural Gas Systems52,088
148GRAND CTL SANIPen ArgylWaste51,453
149SECCRA Community LandfillWest GroveWaste50,933
150HolbrookWind RidgePetroleum and Natural Gas Systems49,268
151BELLEFIELD BOILER PLANTPittsburghPower Plants48,730
152JELD-WEN, INC.TowandaOther, Waste48,573
153ELLWOOD QUALITY STEELSNew CastleMetals48,318
154Galaxy Compressor StationParkerPetroleum and Natural Gas Systems48,032
155ALLIANCE SANI LDFLTaylorWaste47,985
156Redhook Compressor StationWaynesburgPetroleum and Natural Gas Systems46,864
157PENN STATE MILTON S HERSHEY MED CTRHersheyOther46,847
158IPSCO KOPPEL TUBULARS CORP AMBRIDGE PLTAmbridgeMetals46,110
159TGP Station 313 CoudersportCoudersportPetroleum and Natural Gas Systems45,015
160Gold Bond - MLT PlantNew ColumbiaMinerals44,822
161TGP Station 321 CliffordUniondalePetroleum and Natural Gas Systems44,650
162WHEATLAND TUBE COMPANY - COUNCILWheatlandMetals42,957
163LAND O LAKES DRY CONDENSED MILK MFGCarlisleOther42,486
164UNIVERSAL STAINLESS BRIDGEVILLE PLTBridgevilleMetals42,448
165Entriken Compressor StationJames CreekPetroleum and Natural Gas Systems42,298
166CLINTON CNTY SOLID W/WAYNE TWP LDFLMcelhattanWaste42,256
167Bernville StationRobesoniaPetroleum and Natural Gas Systems40,991
168TGP Station 310 Smethport, PASmethportPetroleum and Natural Gas Systems40,973
169TEAM TEN LLC DBA AMER EAGLE PAPER MILLSTyronePulp and Paper40,880
170Eastern Gas Transmission and Storage - Oakford and Rock Springs Stations (Stor and Tran)DelmontPetroleum and Natural Gas Systems40,436
171TGP Station 307 MarienvilleMarienvillePetroleum and Natural Gas Systems40,413
172ELLWOOD MILL PRODUCTSNew CastleOther39,678
173TGP Station 317 Troy, PATroyPetroleum and Natural Gas Systems39,625
174TGP Station 303, Seneca, PASenecaPetroleum and Natural Gas Systems39,518
175Armagh Compressor StationNew FlorencePetroleum and Natural Gas Systems38,154
176Shermans Dale StationShermans DalePetroleum and Natural Gas Systems37,668
177BechtelsvilleBartoPetroleum and Natural Gas Systems37,429
178SANOFI PASTEURSwiftwaterChemicals36,717
179VANDERGRIFT FACILITYVandergriftMetals36,310
180Energy Center Pittsburgh LLCPittsburghPower Plants35,906
181VEOLIA ES GREENTREE LDFLKerseyWaste35,793
182WESTMORELAND SANITARY LDFLBelle VernonWaste35,679
183GE Transportation-Erie PlantErieOther35,203
184Harmon Creek Gas PlantBulgerPetroleum and Natural Gas Systems34,831
185IMPERIAL LandfillImperialWaste34,694
186GLOBAL TUNGSTEN & POWDERSTowandaMetals34,669
187ANCHOR ACQUISITION LLC MONACA PLTMonacaMinerals34,496
188UNION ELEC HARMON CREEK PLTBurgettstownMetals34,386
189Energy Center Pittsburgh LLC - Gibbon PlantPittsburghPower Plants34,275
190DELAWARE CNTY SWA/ROLLING HILLS MUNI WASTE LDFLBoyertownWaste34,232
191JBS SOUDERTON, INC. - RENDERING FACILITYSoudertonOther, Waste33,821
192Eastern Gas Transmission and Storage - Greenlick and Little Greenlick Stations (Stor and Tran)Cross ForksPetroleum and Natural Gas Systems33,764
193GREENRIDGE RECLAMATION LandfillScottdaleWaste33,693
194BVPV Styrenics LLCMonacaOther33,538
195CHESTNUT VALLEY LDFLMc ClellandtownWaste33,034
196TEMPLE UNIVERSITYPhiladelphiaOther32,982
197Wolf Run Energy LLCWyalusingPower Plants32,141
198CALUMET KARNS CITY REFINING, LLC.Karns CityPetroleum and Natural Gas Systems31,730
199Eastern Gas Transmission and Storage - Centre Station (Tran)Pleasant GapPetroleum and Natural Gas Systems31,610
200International Paper - Erie Lowville Landfill IIIWattsburgWaste31,443
201COMM REFUSE SVC INC/CUMBERLAND CNTY LDFLShippensburgWaste31,281
202JESSOP STEEL, LLC WASHINGTON FACILITYWashingtonMetals31,117
203Bucknell UniversityLewisburgOther31,037
204Geisinger Medical CenterDanvilleOther30,901
205Eddystone Generating StationEddystonePower Plants30,811
206CPG - Easton Compressor StationEastonPetroleum and Natural Gas Systems30,634
207Oxbow Creek Energy LLCFactoryvillePower Plants30,522
208COLUMBIA GAS TRANSMISSION LLC ARTEMAS COMPRESSOR STATIONArtemasPetroleum and Natural Gas Systems30,491
209Beaver Dam Energy LLCCantonPower Plants30,439
210Roundtop Energy LLCMeshoppenPower Plants29,364
211MT JEWETT COMPLEXKaneMinerals28,851
212Eastern Gas Transmission and Storage - Ellisburg Station (Stor)Genesee Twp.Petroleum and Natural Gas Systems28,424
213Corelle Brands - Charleroi PlantCharleroiMinerals27,847
214Eastern Gas Transmission and Storage - Punxsutawney Station (Tran)PunxsutawneyPetroleum and Natural Gas Systems27,798
215Mostoller Landfill, Inc.SomersetWaste27,663
216MariettaMariettaPetroleum and Natural Gas Systems27,496
217ConAgra Foods Inc.MiltonOther27,380
218LANCHESTER LANDFILLNarvonWaste27,369
219North American HoganasHollsoppleMetals27,198
220TEMPLE UNIVERSITY HEALTH SCIENCES CAMPUSPhiladelphiaOther26,925
221Synthomer Jefferson Hills LLCWest ElizabethOther26,846
222WESTROCK CONVERTING COMPANY - STROUDSBURG MILLDelaware Water GapPulp and Paper26,778
223Energy Center Harrisburg LLCHarrisburgPower Plants26,487
224Hunlock Unit 4Hunlock CreekPower Plants26,303
225EVONIK CORPORATIONChesterChemicals26,112
226Dairy Farmers of AmericaNew WilmingtonOther26,049
227KELLOGG LANCASTER CEREAL PLTLancasterOther25,651
228Alpaca Energy LLCCantonPower Plants25,541
229SEPTA Roberts ComplexPhiladelphiaOther25,533
230US Steel - Fairless Hills PlantFairless HillsMetals25,241
231MONROEVILLE LDFLMonroevilleWaste25,126
232WESTERN BERKS COMM LDFL & RECYCLING CTR/ BIRDSBOROBirdsboroWaste24,813
233LAKE VIEW LDFLErieWaste24,740
234TULLYTOWN RESOURCE RECOVER FACILITY (TRRF) LANDFILLTullytownWaste24,350
235COLUMBIA GAS TRANSMISSION LLC WAYNESBURG COMPRESSOR STATIONWaynesburgPetroleum and Natural Gas Systems24,293
236CPG - Milford Compressor StationMilfordPetroleum and Natural Gas Systems24,240
237ELLWOOD NATL FORGEIrvineMetals24,129
238Milan Energy LLCMilanPower Plants23,756
239The Children\s Hospital of PhiladelphiaPhiladelphiaOther23,736
240UniontownLemont FurnacePetroleum and Natural Gas Systems23,467
241BOEING HELICOPTER DIVRidley ParkOther23,332
242PQ Corp - Chester PlantChesterChemicals22,439
243Fairchild SemiconductorMountain TopOther22,213
244INMETCOEllwood CityMetals22,033
245Revolution Cryogenic PlantBulgerPetroleum and Natural Gas Systems21,981
246OWENS-BROCKWAY GLASS CONTAINER INC PLT 18BrockwayMinerals21,921
247ARDEN LDFLWashingtonWaste21,666
248NEWMAN & COPhiladelphiaPulp and Paper21,563
249Reading HospitalWest ReadingOther20,807
250NFGSC MERCER COMPRESSOR STATIONMercerPetroleum and Natural Gas Systems20,406
251Eastern Gas Transmission and Storage - Crayne Station (Tran)WaynesburgPetroleum and Natural Gas Systems19,522
252Collegeville Holdings LLCCollgevevilleOther18,762
253USA VALLEY FAC INC/VALLEY LDFLIrwinWaste17,725
254WASTE MANAGEMENT DISPOSAL SERVICE MOUNTAIN VIEW LANDFILLGreencastleWaste17,210
255Cargill Meat Solutions CorpWyalusingOther, Waste16,793
256WARD MANUFACTURING LLCBlossburgMetals16,548
257Standard Forged Products, LLC - McKees RocksMcKees RocksOther16,013
258NFGSC ROYSTONE STATIONSheffieldPetroleum and Natural Gas Systems15,319
259FREY FARM-CRESWELL LDFLConestogaWaste15,297
260WSI Sandy Run Landfill, Inc.HopewellWaste15,188
261Sarsen Gas Processing PlantEvans CityPetroleum and Natural Gas Systems14,868
262LAUREL HIGHLANDS LANDFILLJohnstownWaste12,580
263COLUMBIA GAS TRANS LLC SALISBURY COMP STASalisburyPetroleum and Natural Gas Systems12,256
264LEHIGH HEAVY FORGE CORP/BETHLEHEMBethlehemOther12,074
265GREATER LEBANON REFUSE LDFLLebanonWaste11,616
266MCKEAN CNTY LDFLKaneWaste11,529
267SOUTHERN ALLEGHENIES LDFLDavidsvilleWaste9,954
268KELLY RUN SANITATIONElizabethWaste9,123
269South Hills (Armoni) LandfillLibraryWaste9,109
270Hazleton GenerationHazle TownshipPower Plants8,166
271EVERGREEN LANDFILL/FKA PELLEGRENE SITECoralWaste6,854
272CLEVELAND-CLIFFS PLATE LLC/CONSHOHOCKEN PLTConshohockenMetals6,624
273Hitachi Energy USA, Inc.Mt. PleasantOther5,928
274SHADE LDFLCairnbrookWaste5,808
275NORTHWEST SANI LDFLWest SunburyWaste5,566
276COUNTY ENVIRONMENTAL LANDFILL OF CLARIONLeeperWaste5,289
277WASTE MGMT DSPL SVC OF PA POTTSTOWN LDFLPottstownWaste4,246
278Airgas Therapeutics LLC - Scott Medical ProductsPlumsteadvilleChemicals2,299
279GE's Grid SolutionsCharleroiOther1,486
280KEYSTONE SANITARY LANDFILLDunmoreWaste1,212
281UGID Broad Mountain LLC/HeginsHeginsPower Plants154

Source: EPA Greenhouse Gas Reporting Program, 2023 reporting year, sector-level emissions from data.epa.gov (fetched October 31, 2026). Direct emissions in metric tons CO2e as EPA totals them: emitter sectors only, biogenic CO2 reported separately. Covers facilities that report as direct emitters; most emit 25,000 t CO2e or more a year. Reference only.

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