Ontelaunee Energy Center
Natural gas power plant · Berks County, Pennsylvania
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Ontelaunee Energy Center
- County
- Berks County
- Generating units
- 3
- Share of state capacity
- 1.37%
- Rank among natural gas plants in Pennsylvania
- #19 of 72
- EIA plant code
- 55193
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| CTG1 | Natural Gas Fired Combined Cycle | 250 MW | 186 MW | 2002 | Operating |
| CTG2 | Natural Gas Fired Combined Cycle | 250 MW | 185 MW | 2002 | Operating |
| STG | Natural Gas Fired Combined Cycle | 228 MW | 175 MW | 2002 | 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
| Marcus Hook Energy LP | Natural gas | 836 MW |
| Ironwood LLC | Natural gas | 778 MW |
| Fayette Energy Facility | Natural gas | 715 MW |
| Armstrong | Natural gas | 688 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 728 MW solar plant and a 728 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