Middletown Energy Center
Natural gas power plant · Butler County, Ohio
Nameplate capacity
544 MW
Rank in Ohio
#27
of 219 plants
In service since
2018
May 2018
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Ohio Power Partners, LLC
- County
- Butler County
- Generating units
- 2
- Share of state capacity
- 1.52%
- Rank among natural gas plants in Ohio
- #20 of 51
- EIA plant code
- 59326
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| MEC1 | Natural Gas Fired Combined Cycle | 310 MW | 253 MW | 2018 | Operating |
| MEC2 | Natural Gas Fired Combined Cycle | 234 MW | 209 MW | 2018 | 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 Ohio
| Darby Power, LLC | Natural gas | 564 MW |
| West Lorain | Natural gas | 556 MW |
| Long Ridge Energy Generation | Natural gas | 522 MW |
| Richland (OH) | Natural gas | 450 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 544 MW solar plant and a 544 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 Ohio power plants · What Ohio actually generates