Middletown
Other power plant · Middlesex County, Connecticut · not currently in service
Details
- Primary fuel
- Other
- Technology
- Petroleum Liquids
- Operator
- Middletown Power LLC
- County
- Middlesex County
- Generating units
- 4
- Share of state capacity
- 7.15%
- Rank among other plants in Connecticut
- #1 of 29
- EIA plant code
- 562
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 4 | Petroleum Liquids | 415 MW | 400 MW | 1973 | Out of service and NOT expected to return to service in next calendar year |
| 3 | Natural Gas Steam Turbine | 239 MW | 236 MW | 1964 | Out of service and NOT expected to return to service in next calendar year |
| 2 | Natural Gas Steam Turbine | 114 MW | 117 MW | 1958 | Out of service and NOT expected to return to service in next calendar year |
| 10 | Petroleum Liquids | 19 MW | 17 MW | 1966 | Out of service and NOT expected to return to service in next calendar year |
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 Connecticut
| CPV Towantic Energy Center | Natural gas | 842 MW |
| Lake Road Generating Plant | Natural gas | 840 MW |
| Kleen Energy Systems | Natural gas | 693 MW |
| New Haven Steam | Other | 642 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 786 MW solar plant and a 786 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 Connecticut power plants · What Connecticut actually generates