Essential Power Rock Springs LLC
Natural gas power plant in Cecil County, Maryland. 795.6 MW of nameplate capacity across 4 generators, operated by Essential Power Operating Services LLC.
Also known as Rock Springs Generation Facility · EIA plant 7835
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 795.6 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- June 2003First generator online
- Operator
- Essential Power Operating Services LLCEIA operator ID 56386
- Grid
- PJMBalancing authority PJM
- Price nodes
- 4 PJM nodesResource nodes with prices
- Location
- Cecil County, MD39.7190, −76.1598
- EIA plant ID
- 7835EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Essential Power Rock Springs produces
Free · EIA-923Net generation, 2025
408 GWh
407,686 MWh, final
Capacity factor, 2025
5.8%
2024: Not reported
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
76.8–875.1
GWh a year. Low 2019, high 2016
| 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 | 164,862 | Not reported | 7 of 12 |
| 2004 | 216,077 | Not reported | 12 of 12 |
| 2005 | 344,568 | Not reported | 12 of 12 |
| 2006 | 120,151 | Not reported | 12 of 12 |
| 2007 | 142,560 | Not reported | 12 of 12 |
| 2008 | 132,244 | Not reported | 12 of 12 |
| 2009 | 136,479 | Not reported | 12 of 12 |
| 2010 | 480,889 | 7.1% | 12 of 12 |
| 2011 | 305,718 | 4.5% | 12 of 12 |
| 2012 | 411,007 | 6.1% | 12 of 12 |
| 2013 | 315,336 | 4.7% | 12 of 12 |
| 2014 | 317,287 | 4.7% | 12 of 12 |
| 2015 | 821,789 | Not reported | 12 of 12 |
| 2016 | 875,117 | 12.9% | 12 of 12 |
| 2017 | 479,577 | 7.1% | 12 of 12 |
| 2018 | 436,851 | Not reported | 12 of 12 |
| 2019 | 76,846 | 1.1% | 12 of 12 |
| 2020 | 261,332 | 3.9% | 12 of 12 |
| 2021 | 235,891 | 3.5% | 12 of 12 |
| 2022 | 225,798 | 3.3% | 12 of 12 |
| 2023 | 213,740 | 3.2% | 12 of 12 |
| 2024 | 178,967 | Not reported | 12 of 12 |
| 2025 | 407,686 | 5.8% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 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
245,136
US short tons. 2024: 110,244
SO₂, 2025
1
US short tons
NOx, 2025
73
US short tons
CO₂ per MWh, calculated
0.60 t
About 1,203 lb per MWh
4 of 4 EPA units reported CO₂ in 2025 (1, 2, 3, 4), matched to EIA plant 7835 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 |
|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | 198.9 | June 2003 |
| 2 | Natural Gas Fired Combustion Turbine | 198.9 | June 2003 |
| 3 | Natural Gas Fired Combustion Turbine | 198.9 | June 2003 |
| 4 | Natural Gas Fired Combustion Turbine | 198.9 | June 2003 |
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 Essential Power Operating Services 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.
300 analyst questions a month, plus MCP
Query Essential Power Rock Springs LLC and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Essential Power Rock Springs
Questions about Essential Power Rock Springs
How much power does Essential Power Rock Springs LLC produce?
Essential Power Rock Springs LLC reported 407,686 MWh (408 GWh) of net generation in 2025, a 5.8% capacity factor on 795.6 MW of nameplate capacity.
Where is Essential Power Rock Springs LLC?
Essential Power Rock Springs LLC is in Cecil County, Maryland, at 39.7190, −76.1598. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Essential Power Rock Springs LLC?
EIA-860M for August 2026 lists Essential Power Operating Services LLC as the operator (EIA operator ID 56386). The operator is not always the owner.
When did Essential Power Rock Springs LLC start operating?
Its first generator began operating in June 2003, according to EIA-860M.
Does InfraMap have power prices for Essential Power Rock Springs LLC?
Yes. InfraMap has PJM day-ahead and real-time prices at 4 price nodes linked to Essential Power Rock Springs LLC, 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
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page