Essential Power Rock Springs LLC
Natural gas power plant · Cecil County, Maryland
Nameplate capacity
796 MW
Rank in Maryland
#6
of 234 plants
In service since
2003
June 2003
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combustion Turbine
- Operator
- Essential Power Operating Services LLC
- County
- Cecil County
- Generating units
- 4
- Share of state capacity
- 5.98%
- Rank among natural gas plants in Maryland
- #4 of 15
- EIA plant code
- 7835
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | 199 MW | 167 MW | 2003 | Operating |
| 2 | Natural Gas Fired Combustion Turbine | 199 MW | 164 MW | 2003 | Operating |
| 3 | Natural Gas Fired Combustion Turbine | 199 MW | 169 MW | 2003 | Operating |
| 4 | Natural Gas Fired Combustion Turbine | 199 MW | 166 MW | 2003 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Maryland
| Wildcat Point Generation Facility | Natural gas | 1,114 MW |
| Key | Natural gas | 831 MW |
| CPV St Charles Energy Center | Natural gas | 775 MW |
| Herbert A Wagner | Other | 774 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 796 MW solar plant and a 796 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Maryland power plants · What Maryland actually generates