NAEA Rock Springs LLC
Cecil County, Maryland · EIA plant ID 7835 · Operator: Essential Power Rock Springs LLC
Nameplate796MWSummer 667 MW
Generators4in service
Net generation408GWh12 mo to Dec 2025
Capacity factor7%gas/coal/oil units, summer MW
Heat rate10,563Btu/kWhfossil units, electric fuel, HHV
First online2003Runs as peaking
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), gas/coal/oil 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.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2003 | 164.9 | 5.1% | 10,030 |
| 2004 | 216.1 | 3.9% | 10,524 |
| 2005 | 344.6 | 6.2% | 10,531 |
| 2006 | 120.2 | 2.2% | 11,184 |
| 2007 | 142.6 | 2.6% | 10,592 |
| 2008 | 132.2 | 2.4% | 10,988 |
| 2009 | 136.5 | 2.4% | 10,512 |
| 2010 | 480.9 | 8.4% | 10,543 |
| 2011 | 305.7 | 5.3% | 10,393 |
| 2012 | 411 | 7.1% | 10,254 |
| 2013 | 315.3 | 5.5% | 10,685 |
| 2014 | 317.3 | 5.5% | 10,357 |
| 2015 | 821.8 | 14.4% | 10,383 |
| 2016 | 875.1 | 15.3% | 10,500 |
| 2017 | 479.6 | 8.4% | 10,514 |
| 2018 | 436.9 | 7.5% | 10,912 |
| 2019 | 76.8 | 1.3% | 10,660 |
| 2020 | 261.3 | 4.4% | 10,549 |
| 2021 | 235.9 | 4.0% | 10,581 |
| 2022 | 225.8 | 3.8% | 10,624 |
| 2023 | 213.7 | 3.7% | 10,565 |
| 2024 | 179 | 3.1% | 10,559 |
| 2025 | 407.7 | 7.0% | 10,563 |
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 | Natural Gas Fired Combustion Turbine | GT | 198.9 | 167.3 | Jun 2003 | Operating | — | coming soon |
| 2 | Natural Gas Fired Combustion Turbine | GT | 198.9 | 164.1 | Jun 2003 | Operating | — | coming soon |
| 3 | Natural Gas Fired Combustion Turbine | GT | 198.9 | 169 | Jun 2003 | Operating | — | coming soon |
| 4 | Natural Gas Fired Combustion Turbine | GT | 198.9 | 166.3 | Jun 2003 | Operating | — | coming soon |
Owner / operator
Operator: Essential Power Rock Springs LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Essential Power Rock Springs LLC | 100.0% | 796 MW |
Nearby plants
Within 80 km.
| Wildcat Point Generation Facility | 1,114 MW | 0.2 km |
| Conowingo | 531 MW | 7 km |
| Peach Bottom | 2,876 MW | 10.3 km |
| 100a Swiss Dale Farm | — | 11.3 km |
| York Energy Center | 1,449 MW | 12.7 km |
| Muddy Run | 1,072 MW | 15.5 km |