Directory of Power Plants in Maryland
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Central Utility Plant at White Oak | GSA Metropolitan Service Center | Silver Spring, MD | PJM Interconnection, LLC (PJM) | 96.0 GWh | Oct 2003 | May 2026 | Natural Gas : 99.1% Distillate Fuel Oil : 0.9% |
| Essential Power Rock Springs LLC | Essential Power Operating Services LLC | Rising Sun, MD | PJM Interconnection, LLC (PJM) | 407.7 GWh | May 2003 | Dec 2025 | Natural Gas |
| UMCP CHP Plant | Trigen-Cinergy Solutions College Park | College Park, MD | PJM Interconnection, LLC (PJM) | 84.4 GWh | May 2003 | Dec 2024 | Natural Gas : 90.0% Distillate Fuel Oil : 10.0% |
| Brandywine Power Facility | Alpha Generation Brandywine, LLC | Brandywine, MD | PJM Interconnection, LLC (PJM) | 816.7 GWh | Jul 1996 | May 2026 | Natural Gas : 95.8% Distillate Fuel Oil : 4.2% |
| Montgomery County Resource Recovery | Covanta Montgomery, Inc. | Dickerson, MD | PJM Interconnection, LLC (PJM) | 229.0 GWh | Apr 1995 | May 2026 | Non-biogenic Municipal Solid Waste : 53.9% Biogenic Municipal Solid Waste : 44.1% Natural Gas : 2.1% |
| NRG Chalk Point CT | NRG Chalk Point CT | Aquasco, MD | PJM Interconnection, LLC (PJM) | 19.2 GWh | May 1990 | May 2026 | Distillate Fuel Oil |
| Eastern Correctional Institute | Maryland Environmental Service | Westover, MD | PJM Interconnection, LLC (PJM) | 13.8 GWh | Jul 1987 | May 2026 | Natural Gas : 99.0% Distillate Fuel Oil : 1.0% |
| Wheelabrator Baltimore Refuse | Wheelabrator Environmental Systems | Baltimore, MD | PJM Interconnection, LLC (PJM) | 313.4 GWh | Oct 1984 | May 2026 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Brandon Shores | Brandon Shores LLC | Baltimore, MD | PJM Interconnection, LLC (PJM) | 3.0 TWh | Apr 1984 | May 2026 | Bituminous Coal : 98.8% Distillate Fuel Oil : 1.2% |
| Easton 2 | Easton Utilities Comm | Easton, MD | PJM Interconnection, LLC (PJM) | 6.6 GWh | Feb 1978 | May 2026 | Distillate Fuel Oil |
| Calvert Cliffs Nuclear Power Plant | Constellation Nuclear | Lusby, MD | PJM Interconnection, LLC (PJM) | 14.9 TWh | Apr 1975 | May 2026 | Nuclear |
| Perryman | Constellation Power Source Generation, LLC | Harford County, MD | PJM Interconnection, LLC (PJM) | 361.2 GWh | Dec 1971 | May 2026 | Natural Gas : 72.8% Distillate Fuel Oil : 27.2% |
| Philadelphia | Constellation Power Source Generation, LLC | Baltimore, MD | PJM Interconnection, LLC (PJM) | 9.3 GWh | Jul 1970 | Dec 2025 | Distillate Fuel Oil |
| Morgantown Generating Plant | Lanyard Power Holdings, LLC | Newburg, MD | PJM Interconnection, LLC (PJM) | 22.4 GWh | May 1970 | May 2026 | Distillate Fuel Oil |
| Smith Island | A & N Electric Coop | Ewell, MD | PJM Interconnection, LLC (PJM) | 108.0 MWh | Nov 1969 | Dec 2025 | Distillate Fuel Oil |
| Crisfield | Calpine Mid-Atlantic Generation LLC | Crisfield, MD | PJM Interconnection, LLC (PJM) | 2.1 GWh | Apr 1968 | Dec 2025 | Distillate Fuel Oil |
| Vienna Operations | NRG Vienna Operations Inc | Vienna, MD | PJM Interconnection, LLC (PJM) | 4.6 GWh | Dec 1967 | Dec 2024 | Residual Fuel Oil : 91.4% Distillate Fuel Oil : 8.6% |
| Chalk Point Power | Chalk Point Power, LLC | Aquasco, MD | PJM Interconnection, LLC (PJM) | 2.6 TWh | Jul 1964 | May 2026 | Natural Gas : 98.4% Distillate Fuel Oil : 1.6% |
| Berlin | Town of Berlin - (MD) | Berlin, MD | PJM Interconnection, LLC (PJM) | 59.0 MWh | May 1961 | Dec 2025 | Distillate Fuel Oil : 57.7% Natural Gas : 42.3% |
| Dickerson Power | Dickerson Power, LLC | Dickerson, MD | PJM Interconnection, LLC (PJM) | 299.5 GWh | May 1959 | May 2026 | Natural Gas : 87.6% Distillate Fuel Oil : 12.4% |
| Herbert A Wagner | H.A. Wagner LLC | Baltimore, MD | PJM Interconnection, LLC (PJM) | 356.6 GWh | Jan 1956 | May 2026 | Distillate Fuel Oil : 93.4% Natural Gas : 6.6% |
| Domino Sugar Baltimore | American Sugar Refining, Inc. | Baltimore, MD | PJM Interconnection, LLC (PJM) | 49.4 GWh | May 1955 | May 2026 | Natural Gas : 91.5% Residual Fuel Oil : 8.5% |
| Easton | Easton Utilities Comm | Easton, MD | PJM Interconnection, LLC (PJM) | 5.2 GWh | Oct 1954 | May 2026 | Distillate Fuel Oil |
| Conowingo | Constellation Power, Inc | Darlington, MD | PJM Interconnection, LLC (PJM) | 1.6 TWh | Feb 1928 | May 2026 | Water |
| Deep Creek | BP Piney & Deep Creek LLC | Oakland, MD | PJM Interconnection, LLC (PJM) | 14.4 GWh | Jun 1925 | Dec 2025 | Water |
| Cherrywood Solar I | Cherrywood Solar, LLC | Greensboro, MD | PJM Interconnection, LLC (PJM) | 16.5 GWh | - | May 2026 | Solar |
Browse Power Plants By Maryland Counties
Figures are based on May 2026 generation numbers.| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Talbot County, MD | # 23 | 3 | 14.2 GWh |
| Kent County, MD | # 22 | 6 | 17.3 GWh |
| Caroline County, MD | # 21 | 2 | 17.8 GWh |
| Carroll County, MD | # 20 | 4 | 24.4 GWh |
| Worcester County, MD | # 19 | 5 | 34.3 GWh |
| Wicomico County, MD | # 18 | 8 | 44.5 GWh |
| Baltimore County, MD | # 17 | 29 | 70.0 GWh |
| Frederick County, MD | # 16 | 11 | 70.9 GWh |
| Howard County, MD | # 15 | 25 | 74.2 GWh |
| Washington County, MD | # 14 | 20 | 77.4 GWh |
| Dorchester County, MD | # 13 | 7 | 93.8 GWh |
| Somerset County, MD | # 12 | 7 | 158.0 GWh |
| County | State Rank | Active Plants | May 2026 Generation |
|---|---|---|---|
| Allegany County, MD | # 11 | 5 | 195.8 GWh |
| Queen Anne's County, MD | # 10 | 9 | 310.4 GWh |
| Baltimore city, MD | # 9 | 11 | 380.5 GWh |
| Garrett County, MD | # 8 | 16 | 701.4 GWh |
| Montgomery County, MD | # 7 | 18 | 780.3 GWh |
| Harford County, MD | # 6 | 19 | 2.0 TWh |
| Anne Arundel County, MD | # 5 | 12 | 3.4 TWh |
| Cecil County, MD | # 4 | 9 | 3.7 TWh |
| Charles County, MD | # 3 | 6 | 3.8 TWh |
| Prince George's County, MD | # 2 | 40 | 8.0 TWh |
| Calvert County, MD | # 1 | 3 | 14.9 TWh |