Caithness Long Island Energy Center
Natural gas power plant · Suffolk County, New York
Nameplate capacity
349 MW
Rank in New York
#31
of 1,152 plants
In service since
2009
August 2009
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Caithness Long Island, LLC
- County
- Suffolk County
- Generating units
- 2
- Share of state capacity
- 0.78%
- Rank among natural gas plants in New York
- #22 of 103
- EIA plant code
- 56234
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| CT01 | Natural Gas Fired Combined Cycle | 196 MW | 188 MW | 2009 | Operating |
| ST01 | Natural Gas Fired Combined Cycle | 153 MW | 130 MW | 2009 | 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 New York
| Selkirk Cogen | Natural gas | 446 MW |
| Narrows Gas Turbines Generating | Natural gas | 352 MW |
| Brooklyn Navy Yard Cogeneration | Natural gas | 322 MW |
| Maple Ridge Wind Farm | Wind | 321 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 349 MW solar plant and a 349 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 New York power plants · What New York actually generates