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840 MW Natural Gas operating in Kemper, MS
840 MW
Nameplate Capacity
3
Generators
units
Natural Gas Fired Combined Cycle
Technology
2014
Operating Since
Coordinates
32.6547, -88.7622
County
Kemper, MS
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Mississippi Power Co | Mississippi Power | — |
| Owner(s) | Mississippi Power Co | Southern | — |
| Status | Operating | — | — |
The Kemper Project, also called the Kemper County energy facility or Plant Ratcliffe, is a natural gas-fired electrical generating station currently under construction in Kemper County, Mississippi. Mississippi Power, a subsidiary of Southern Company, began construction of the plant in 2010. The initial, coal-fired project was central to President Obama's Climate Plan, as it was to be based on "clean coal" and was being considered for more support from the Congress and the incoming Trump Administration in late 2016. If it had become operational with coal, the Kemper Project would have been a first-of-its-kind electricity plant to employ gasification and carbon capture technologies at this scale.
Read more on WikipediaThe Ratcliffe Energy Facility is an 840 MW natural gas-fired combined cycle power plant located in Kemper County, Mississippi. The plant, which began operating in 2014, is owned by Southern Company and operated by Mississippi Power Company. It consists of three generators utilizing natural gas as its primary fuel source. Ratcliffe ranks as the 8th largest power plant in Mississippi out of 20, and 228th nationally out of 945 plants. The facility operates within the Southern Company Services, Inc. - Trans balancing authority and the SERC NERC region.
In its most recent year of operation, Ratcliffe generated 3,984,740 MWh of electricity, achieving a capacity factor of 53.9%. Financial data indicates an installed cost of $1161.73 per kW, based on FERC filings.
Generated from EIA, GEM, and public data sources
Grid Region
Southeast
Market
SEEM Participant
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
Southern Company Services, Inc. - Trans (SOCO)
Grid Voltage
230.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
271.5K MWh
Latest Month
4.0M MWh
Annual Generation
53.9%
Capacity Factor
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CO₂ Intensity
876 lb/MWh
NOx
0.078 lb/MWh
SO₂
0.004 lb/MWh
CH₄
0.016 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
50.3%
Annual Net Gen
3704 GWh
CO₂eq
877 lb/MWh
Subregion
SERC South
Combined cycle · Mississippi Power Company · Data from 2020–2024
$1,194/kW
Installed Cost
$-3/kW
Annual CapEx
$28.0/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
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This plant's balancing authority participates in the Southeast Energy Exchange Market (SEEM). SEEM is a bilateral exchange — no public nodal pricing.
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-05-31
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