South Harper
Natural gas power plant · Cass County, Missouri
Nameplate capacity
351 MW
Rank in Missouri
#17
of 139 plants
In service since
2005
August 2005
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combustion Turbine
- Operator
- Evergy Missouri West
- County
- Cass County
- Generating units
- 3
- Share of state capacity
- 1.50%
- Rank among natural gas plants in Missouri
- #6 of 35
- EIA plant code
- 56151
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GT1 | Natural Gas Fired Combustion Turbine | 117 MW | 106 MW | 2005 | Operating |
| GT2 | Natural Gas Fired Combustion Turbine | 117 MW | 108 MW | 2005 | Operating |
| GT3 | Natural Gas Fired Combustion Turbine | 117 MW | 108 MW | 2005 | 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 Missouri
| High Prairie Wind Farm | Wind | 400 MW |
| Empire Energy Center | Natural gas | 379 MW |
| Holden | Natural gas | 321 MW |
| Nodaway | Natural gas | 316 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 351 MW solar plant and a 351 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 Missouri power plants · What Missouri actually generates