Calvert Cliffs Nuclear Power Plant
Calvert County, Maryland · EIA plant ID 6011 · Operator: Exelon Nuclear
Nameplate1,850MWSummer 1,745 MW
Generators2in service
Net generation14,935GWh12 mo to Aug 2026
Capacity factor98%nuclear units, summer MW
Heat rate—thermal plants only
First online1975
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), nuclear units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 13,656.3 | 93.1% | — |
| 2002 | 12,128 | 82.2% | — |
| 2003 | 13,690.7 | 91.8% | — |
| 2004 | 14,580.3 | 95.7% | — |
| 2005 | 14,703.2 | 96.7% | — |
| 2006 | 13,830.4 | 91.0% | — |
| 2007 | 14,353.2 | 94.4% | — |
| 2008 | 14,678.7 | 96.3% | — |
| 2009 | 14,550.1 | 97.4% | — |
| 2010 | 13,993.9 | 93.7% | — |
| 2011 | 14,397.4 | 96.4% | — |
| 2012 | 13,579.3 | 90.1% | — |
| 2013 | 14,264.3 | 94.9% | — |
| 2014 | 14,343.3 | 95.9% | — |
| 2015 | 14,643.3 | 97.9% | — |
| 2016 | 14,760.2 | 98.4% | — |
| 2017 | 15,107 | 101.0% | — |
| 2018 | 14,987.9 | 99.1% | — |
| 2019 | 15,012.9 | 100.4% | — |
| 2020 | 15,080.6 | 99.5% | — |
| 2021 | 14,993.6 | 100.2% | — |
| 2022 | 14,810.7 | 99.0% | — |
| 2023 | 14,983.8 | 98.0% | — |
| 2024 | 14,724.1 | 96.0% | — |
| 2025 | 14,795.2 | 96.8% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Nuclear | ST | 918 | 884.2 | May 1975 | Operating | — | coming soon |
| 2 | Nuclear | ST | 932.4 | 861 | Apr 1977 | Operating | — | coming soon |
Owner / operator
Operator: Exelon Nuclear. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Exelon Nuclear | 100.0% | 1,850 MW |
Nearby plants
Within 80 km.
| Chalk Point LLC | 1,825 MW | 24.5 km |
| NRG Chalk Point CT | 94 MW | 24.5 km |
| Chesapeake Beach BESS | 1 MW | 25.2 km |
| UMCES Ground Mount | 2 MW | 31.4 km |
| Egypt Road Solar | 51 MW | 31.6 km |
| Mustang One | 2 MW | 32.4 km |