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2666.7 MW Nuclear operating in Oconee, SC
2,666.7 MW
Nameplate Capacity
3
Generators
units
Nuclear
Technology
1973
Operating Since
Coordinates
34.7939, -82.8986
County
Oconee, SC
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Duke Energy Carolinas, LLC | Duke Energy | Duke Energy |
| Owner(s) | Duke Energy Carolinas, LLC | Duke Energy | — |
| Status | Operating | operating | — |
The Oconee Nuclear Station is a nuclear power station located on Lake Keowee near Seneca, South Carolina, and has a power output capacity of over 2,500 megawatts. It is the second nuclear power station in the United States to have its operating license extended for an additional twenty years by the Nuclear Regulatory Commission (NRC).
Read more on WikipediaOconee Nuclear Station is a 2666.7 MW nuclear power plant located in Oconee County, South Carolina. The plant, which began operating in 1973, is owned and operated by Duke Energy Carolinas, LLC, a subsidiary of Duke Energy. It consists of three nuclear generators and is the largest of four power plants in South Carolina, and the sixth-largest of 55 nuclear plants nationally. The plant operates within the Duke Energy Carolinas balancing authority, in the SERC NERC region.
In the most recent year of record, Oconee generated 22,420,221 MWh of electricity, achieving a capacity factor of 95.9%. Financial data indicates an installed cost of $1380.6 per kW. The plant has a power purchase agreement (PPA) price of $25 per MWh. Financial information is sourced from FERC and FERC EQRs.
Generated from EIA, GEM, and public data sources
Grid Region
Southeast
Market
SEEM Participant
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
Duke Energy Carolinas (DUK)
Grid Voltage
500.0 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.
2.0M MWh
Latest Month
22.4M MWh
Annual Generation
95.9%
Capacity Factor
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Duke Energy Carolinas, LLC · Data from 2015–2025
$25.0/MWh
PPA Price
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 2026-03-26
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NextEra vs Duke
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Duke Energy unveiled an industry-record $103 billion five-year capital plan targeting 14 GW of new capacity driven by AI data-center load growth across the Carolinas and other service territories.
sourceDuke Energy Carolinas, LLC filed a Notice of Intent to Prepare an Environmental Assessment with the NRC, consistent with ongoing license-renewal or operational regulatory engagement at Oconee.
source