Power Plants in Maryland

Maryland's power sector in numbers

Bywatts maps 48 operating power plants with 10.6 GW of nameplate capacity in Maryland. Coal leads with 57% of that capacity across 4 plants, followed by Nuclear (17%) and Natural Gas (14%). The inventory also includes 14 plants (1.4 GW) that EIA-860 lists as retired, 1 partly retired with no operable units of its recorded fuel and 1 never built; the largest retired plant is C P CRANE (416 MW, retired 2018).

The largest operating plants are CHALK POINT LLC (2,647 MW, Coal, NRG CHALK POINT LLC), CALVERT CLIFFS NUCLEAR POWER PLANT (1,829 MW, Nuclear, CALVERT CLIFFS NUCLEAR PP LLC) and BRANDON SHORES (1,370 MW, Coal, RAVEN POWER HOLDINGS LLC).

Of the 46 operating plants with a recorded commissioning year, 25 came online in 2000 or later and 18 in 2010 or later; the busiest decade for new capacity was the 1960s (2.8 GW).

The largest operators by operating capacity are NRG CHALK POINT LLC (1 plant, 2.6 GW), RAVEN POWER HOLDINGS LLC (2 plants, 2.4 GW) and CALVERT CLIFFS NUCLEAR PP LLC (1 plant, 1.8 GW).

Retail electricity sales in Maryland reached 59.5 TWh in 2025, down 3.7% over ten years and up 0.8% year on year; residential customers took 47.1% of it. The average retail price across all sectors was 16.83 cents per kWh, up 39.4% since 2015.

The database also maps 150 named substations (10 of the 33 with a recorded voltage are rated 345 kV or above), 1 data center (operated by Lumen Technologies), 146 solar installers and 52 solar companies in Maryland.

Operating capacity by fuel

Retail electricity sales

Sources: HIFLD power-plant inventory (capacity, fuel, operator), EIA-860 (commissioning year, retirements, operable capacity), EIA retail sales and revenue series through January 2026. Counts are of plants Bywatts lists, not every generator in the state.