CPV St Charles Energy Center
Natural gas power plant in Charles County, Maryland. 775.3 MW of nameplate capacity across 3 generators, operated by CPV Maryland LLC.
Also known as CPV St. Charles Energy Center · EIA plant 56846
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Key facts
- Capacity
- 775.3 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- February 2017First generator online
- Operator
- CPV Maryland LLCEIA operator ID 56031
- Grid
- PJMBalancing authority PJM
- Price nodes
- 3 PJM nodesResource nodes with prices
- Location
- Charles County, MD38.5686, −76.8919
- EIA plant ID
- 56846EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power CPV St Charles produces
Free · EIA-923Net generation, 2025
4.72 TWh
4,718,236 MWh, final
Capacity factor, 2025
69.5%
2024: 53.3%
January to July 2026
1.73 TWh
Provisional
Range, 2018 to 2025
3.6–4.7
TWh a year. Low 2024, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | Not reported | Not reported | 0 of 12 |
| 2016 | 3,784 | Not reported | 2 of 12 |
| 2017 | 3,734,952 | Not reported | 11 of 12 |
| 2018 | 4,308,293 | Not reported | 12 of 12 |
| 2019 | 4,198,193 | 64.2% | 12 of 12 |
| 2020 | 3,793,816 | Not reported | 12 of 12 |
| 2021 | 3,792,084 | 55.8% | 12 of 12 |
| 2022 | 3,787,178 | 55.8% | 12 of 12 |
| 2023 | 4,162,428 | 61.3% | 12 of 12 |
| 2024 | 3,628,467 | 53.3% | 12 of 12 |
| 2025 | 4,718,236 | 69.5% | 12 of 12 |
| 2026 (provisional, partial year) | 1,726,309 | 43.8% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · PJMEmissions
Free · EPA CAMPDCO₂, 2025
1.98M
US short tons. 2024: 1.55M
SO₂, 2025
10
US short tons
NOx, 2025
86
US short tons
CO₂ per MWh, calculated
0.42 t
About 841 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (GT1, GT2), matched to EIA plant 56846 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
859
million gallons
Consumption, 2024
713
million gallons
Source
Mattawoman WWTF
Discharge, Reclaimed. Induced-draft tower
Watershed stress
Very low/none · 0.138
USGS SUI, HUC12 Jordan Swamp-Zekiah Swamp Run
12 of 12 cooling months report withdrawal. Reclaimed water or plant effluent; not tested. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GTG1 | Natural Gas Fired Combined Cycle | 223.6 | February 2017 |
| GTG2 | Natural Gas Fired Combined Cycle | 223.6 | February 2017 |
| STGEN | Natural Gas Fired Combined Cycle | 328.1 | February 2017 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists CPV Maryland LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about CPV St Charles
How much power does CPV St Charles Energy Center produce?
CPV St Charles Energy Center reported 4,718,236 MWh (4.72 TWh) of net generation in 2025, a 69.5% capacity factor on 775.3 MW of nameplate capacity. From January to July 2026 it reported 1.73 TWh, which is provisional.
Where is CPV St Charles Energy Center?
CPV St Charles Energy Center is in Charles County, Maryland, at 38.5686, −76.8919. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates CPV St Charles Energy Center?
EIA-860M for August 2026 lists CPV Maryland LLC as the operator (EIA operator ID 56031). The operator is not always the owner.
When did CPV St Charles Energy Center start operating?
Its first generator began operating in February 2017, according to EIA-860M.
Does InfraMap have power prices for CPV St Charles Energy Center?
Yes. InfraMap has PJM day-ahead and real-time prices at 3 price nodes linked to CPV St Charles Energy Center, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- PJM day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page