Power plants in Harford County, Maryland
19 operating power plants in Harford County, Maryland, with 1,090 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Largest power plants in Harford County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | ConowingoHydro | 531 | 1,549 | 33.3% |
| 2 | PerrymanNatural gas and oil | 492 | 251 | 5.8% |
| 3 | Fairview FarmsSolar | 30 | 23.9 | 9.1% |
| 4 | APG Combined Heat and Power PlantNatural gas | 7.9 | 47.1 | 68.1% |
| 5 | 4622 Mercedes Dr Solar, LLCSolar | 2.7 | 3.0 | 12.8% |
| 6 | APG New ChesapeakeSolar | 2.3 | 3.9 | 19.2% |
| 7 | Archdiocese of Baltimore JSolar | 2.0 | 3.2 | 18.1% |
| 8 | Archdiocese of Baltimore LSolar | 2.0 | 3.2 | 18.5% |
| 9 | Baltimore City BSolar | 2.0 | 3.0 | 17.0% |
| 10 | Baltimore City DSolar | 2.0 | 3.0 | 17.1% |
| 11 | Baltimore City FSolar | 2.0 | 2.9 | 16.4% |
| 12 | Baltimore City GSolar | 2.0 | 2.9 | 16.6% |
| 13 | City of Havre De Grace CSolar | 2.0 | 3.1 | 17.9% |
| 14 | Sod Run WTP ASolar | 2.0 | 3.2 | 18.5% |
| 15 | Macy's MD Joppa Solar ProjectSolar | 1.8 | 2.3 | 14.4% |
| 16 | APG Old BaysideSolar | 1.7 | 3.0 | 20.1% |
| 17 | The Clorox CompanySolar | 1.6 | 2.3 | 16.7% |
| 18 | McCormick & Co. Inc. at BelcampSolar | 1.4 | 0.7 | 5.8% |
| 19 | Havre de Grace II - E at PerrymanSolar | 1.4 | 1.9 | 15.2% |
MW is the nameplate capacity of operating generators and batteries. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources
More power plant lists for Maryland
Largest power plants in Maryland50 plants · 13,115 MWSolar farms in Maryland208 plants · 1,388 MWWind farms in Maryland6 plants · 245 MWBattery storage projects in Maryland5 projects · 12 MWNatural gas power plants in Maryland16 plants · 6,346 MWHydroelectric power plants in Maryland2 plants · 551 MW
Other counties in Maryland
Prince Georges County31 plants · 3,094 MWHoward County26 plants · 47 MWBaltimore County23 plants · 47 MWGarrett County22 plants · 414 MWMontgomery County15 plants · 498 MWWashington County15 plants · 74 MWAnne Arundel County12 plants · 2,173 MWBaltimore City9 plants · 173 MWCecil County9 plants · 1,923 MW