Commonwealth Chesapeake
Oil power plant in Accomack County, Virginia. 414.5 MW of nameplate capacity across 7 generators, operated by Commonwealth Chesapeake Co LLC.
Also known as EIA plant 55381
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 414.5 MWNameplate
- Generators
- 7 operatingEIA-860M, August 2026
- Operating since
- August 2000First generator online
- Operator
- Commonwealth Chesapeake Co LLCEIA operator ID 4194
- Grid
- PJMBalancing authority PJM
- Price nodes
- 7 PJM nodesResource nodes with prices
- Location
- Accomack County, VA37.9892, −75.5400
- EIA plant ID
- 55381EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Commonwealth Chesapeake produces
Free · EIA-923Net generation, 2025
44.2 GWh
44,181 MWh, final
Capacity factor, 2025
Not reported
2024: 0.7%
January to July 2026
82.8 GWh
Provisional
Range, 2015 to 2025
13.8–134.1
GWh a year. Low 2019, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 24,041 | Not reported | 12 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | 120,489 | Not reported | 12 of 12 |
| 2003 | 215,614 | Not reported | 12 of 12 |
| 2004 | 140,949 | Not reported | 12 of 12 |
| 2005 | 100,555 | Not reported | 12 of 12 |
| 2006 | 41,647 | Not reported | 12 of 12 |
| 2007 | 46,414 | Not reported | 12 of 12 |
| 2008 | 37,518 | Not reported | 12 of 12 |
| 2009 | 21,424 | Not reported | 12 of 12 |
| 2010 | 52,915 | 1.5% | 12 of 12 |
| 2011 | 31,370 | 0.9% | 12 of 12 |
| 2012 | 75,457 | 2.1% | 12 of 12 |
| 2013 | 41,403 | 1.2% | 12 of 12 |
| 2014 | 155,228 | 4.4% | 12 of 12 |
| 2015 | 134,058 | 3.8% | 12 of 12 |
| 2016 | 100,476 | 2.8% | 12 of 12 |
| 2017 | 72,131 | 2.0% | 12 of 12 |
| 2018 | 104,503 | 3.0% | 12 of 12 |
| 2019 | 13,750 | 0.4% | 12 of 12 |
| 2020 | 23,861 | 0.7% | 12 of 12 |
| 2021 | 37,804 | 1.1% | 12 of 12 |
| 2022 | 55,864 | 1.6% | 12 of 12 |
| 2023 | 22,908 | 0.6% | 12 of 12 |
| 2024 | 23,376 | 0.7% | 12 of 12 |
| 2025 | 44,181 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | 82,806 | Not reported | 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
38,305
US short tons. 2024: 21,163
SO₂, 2025
0
US short tons
NOx, 2025
31
US short tons
CO₂ per MWh, calculated
0.87 t
About 1,734 lb per MWh
7 of 7 EPA units reported CO₂ in 2025 (CT-001, CT-002, CT-003, CT-004, CT-005, CT-006, CT-007), matched to EIA plant 55381 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, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| UNT1 | Petroleum Liquids | 57.5 | August 2000 |
| UNT2 | Petroleum Liquids | 57.5 | September 2000 |
| UNT3 | Petroleum Liquids | 57.5 | September 2000 |
| UNT4 | Petroleum Liquids | 60.5 | June 2001 |
| UNT5 | Petroleum Liquids | 60.5 | June 2001 |
| UNT6 | Petroleum Liquids | 60.5 | June 2001 |
| UNT7 | Petroleum Liquids | 60.5 | August 2001 |
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 Commonwealth Chesapeake Co 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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Power plants near Commonwealth Chesapeake
Questions about Commonwealth Chesapeake
How much power does Commonwealth Chesapeake produce?
Commonwealth Chesapeake reported 44,181 MWh (44.2 GWh) of net generation in 2025. From January to July 2026 it reported 82.8 GWh, which is provisional.
Where is Commonwealth Chesapeake?
Commonwealth Chesapeake is in Accomack County, Virginia, at 37.9892, −75.5400. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Commonwealth Chesapeake?
EIA-860M for August 2026 lists Commonwealth Chesapeake Co LLC as the operator (EIA operator ID 4194). The operator is not always the owner.
When did Commonwealth Chesapeake start operating?
Its first generator began operating in August 2000, according to EIA-860M.
Does InfraMap have power prices for Commonwealth Chesapeake?
Yes. InfraMap has PJM day-ahead and real-time prices at 7 price nodes linked to Commonwealth Chesapeake, 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
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page