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774 MW Hydro operating in Pickens, SC
774 MW
Nameplate Capacity
4
Generators
units
Hydroelectric Pumped Storage
Technology
1973
Operating Since
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Duke Energy Carolinas, LLC | Duke Energy Carolinas | — |
| Owner(s) | Duke Energy Carolinas, LLC | Duke Energy | Duke Energy |
| Status | Operating | operating | — |
Jocassee Dam is an embankment dam on the Keowee River, straddling the border of Pickens and Oconee counties in South Carolina in the United States. The dam forms Lake Jocassee, which is fed by the Toxaway, Thompson, Horsepasture and Whitewater Rivers, and serves primarily for hydroelectric power generation and flood control. The dam and reservoir are part of the Keowee-Toxaway Hydroelectric Project, owned and operated by Duke Energy.
Read more on WikipediaJocassee is a 774 MW hydroelectric pumped storage power plant located in Pickens County, South Carolina. The plant began operating in 1973 and is owned and operated by Duke Energy Carolinas, LLC, a subsidiary of Duke Energy. It consists of 4 generators using water as its primary fuel source. Jocassee is the second-largest of 7 hydroelectric plants in South Carolina, and ranks 33rd out of 194 nationally. The plant operates within the Duke Energy Carolinas balancing authority and the SERC NERC region.
Financial data indicates an installed cost of $204.61 per kilowatt. The plant has a power purchase agreement (PPA) price of $25 per MWh. Financial data 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
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.
−9.8K MWh
Net Charging
-212.0K MWh
Annual Net Energy
-3.1%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
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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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