Essential Power Rock Springs
Cogentrix Energy Power Management LLCCecil County
Essential Power Rock Springs LLC is a natural gas-fired power facility with 795.6 MW of EIA-reported nameplate capacity in Cecil County, Maryland, registered as EIA Plant ID 7835. Essential Power Rock Springs LLC is the public owner or developer; Essential Power Operating Services LLC is the registered plant entity or operator. The plant's generating configuration is four air-cooled, simple-cycle, natural-gas-fired combustion turbines. Commercial operation began in November 2002. The facility interconnects at Rock Springs Substation at 500 kV.
Mapped infrastructure geometry associated with this asset.
Natural Gas Fired Combustion Turbine
Essential Power Rock Springs LLC is operating.
500 kV · PECO Energy Company
EIA plant 7835 · Inventory for Sep 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | Operating | 198.9 | Unknown |
| 2 | Natural Gas Fired Combustion Turbine | Operating | 198.9 | Unknown |
| 3 | Natural Gas Fired Combustion Turbine | Operating | 198.9 | Unknown |
| 4 | Natural Gas Fired Combustion Turbine | Operating | 198.9 | Unknown |
| 5 |
Similar plants ranked by technology, capacity, and distance.
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 198.9 MW 167.3 MW summer | Natural Gas Fired Combustion Turbine GT | Jun 2003 | Operating |
| 2 | 198.9 MW 164.1 MW summer | Natural Gas Fired Combustion Turbine GT | Jun 2003 | Operating |
| 3 | 198.9 MW 169 MW summer | Natural Gas Fired Combustion Turbine GT | Jun 2003 | Operating |
| 4 | 198.9 MW 166.3 MW summer | Natural Gas Fired Combustion Turbine GT | Jun 2003 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
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Project milestones and public references behind the asset profile.
The SRBC stated that Rock Springs began commercial operations in November 2002.
PJM
PJM · Cecil County
| Natural Gas Fired Combustion Turbine |
| canceled_or_postponed |
| 195 |
| Unknown |
| 6 | Natural Gas Fired Combustion Turbine | canceled_or_postponed | 195 | Unknown |
|---|
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
EIA-860 lists generator 1, generator 2, generator 3, generator 4 with this operating date.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Essential Power Rock Springs reports 795.6 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.
Essential Power Rock Springs is a Natural Gas Fired Combustion Turbine facility in Cecil County, MD, participating in the PJM market.
Essential Power Rock Springs is in Cecil County, MD, inside the PJM balancing area.
Essential Power Rock Springs is operated by Essential Power Operating Services LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Essential Power Rock Springs reported 179 GWh over the twelve months to 2024-12. Figures are net generation as filed to EIA-923.
Essential Power Rock Springs interconnects at Rock Springs Substation, on the PECO Energy Company system.
By capacity, Essential Power Rock Springs ranks #29 of 829 operating plants of the same technology nationally. It ranks #1 of 8 in MD.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.