South Harper
South Harper is a 351 MW natural gas power plant in Cass County, Missouri, operated by Evergy Missouri West. EIA-860M lists 3 generating units here, inside SPP. Its units entered service in 2005.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 351 MW
- 321.2 MW net summer
- Generating units
- 3
- In service
- 2005
- EIA plant ID
- 56151
Where it is
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- County
- Cass County, Missouri
- Coordinates
- 38.6803, -94.4824
- Balancing authority
- SWPP
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Evergy Missouri West
- Primary energy source
- Natural gas
- Technologies
- Natural Gas Fired Combustion Turbine
- Status
- Operating
South Harper: FAQ
- Where is South Harper?
- In Cass County, Missouri (MO). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is South Harper?
- 351 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
- Who owns South Harper?
- EIA-860M names Evergy Missouri West as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as South Harper LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Evergy Missouri West here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "South Harper LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is South Harper still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.