Marcus Hook Energy LP
Natural gas power plant · Delaware County, Pennsylvania
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Marcus Hook Energy LP
- County
- Delaware County
- Generating units
- 4
- Share of state capacity
- 1.57%
- Rank among natural gas plants in Pennsylvania
- #17 of 72
- EIA plant code
- 55801
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| STG | Natural Gas Fired Combined Cycle | 272 MW | 307 MW | 2004 | Operating |
| CT13 | Natural Gas Fired Combined Cycle | 188 MW | 190 MW | 2004 | Operating |
| CT1A | Natural Gas Fired Combined Cycle | 188 MW | 190 MW | 2004 | Operating |
| CTIB | Natural Gas Fired Combined Cycle | 188 MW | 190 MW | 2004 | 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 Pennsylvania
| Hamilton Patriot Generation Plant | Natural gas | 870 MW |
| Eddystone Generating Station | Natural gas | 862 MW |
| Ironwood LLC | Natural gas | 778 MW |
| Ontelaunee Energy Center | Natural gas | 728 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 836 MW solar plant and a 836 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 Pennsylvania power plants · What Pennsylvania actually generates