Search
Search plants, projects, owners, and states
Search plants, projects, owners, and states
12 MW Hydro operating in Cherokee, SC — Duke Energy Carolinas
12 MW
Nameplate Capacity
4
Generators
units
Conventional Hydroelectric
Technology
1910
Operating Since
Coordinates
35.0318, -81.4932
County
Cherokee, SC
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Duke Energy Carolinas, LLC | Duke Energy Carolinas | — |
| Owner(s) | Duke Energy Carolinas, LLC | Duke Energy | — |
| Status | Operating | — | — |
The 99 Islands hydroelectric plant is located in Cherokee County, South Carolina. The plant, owned and operated by Duke Energy Carolinas, LLC, has a total capacity of 12 MW across four generators. It began operating in 1910, utilizing conventional hydroelectric technology and water as its primary fuel source. The plant operates within the Duke Energy Carolinas balancing authority and the SERC NERC region.
In the most recent year with available data, 99 Islands generated 36,578 MWh, achieving a capacity factor of 34.3%. The plant has a power purchase agreement (PPA) price of $25 per MWh. 99 Islands is ranked as the 16th largest hydroelectric plant in South Carolina out of 33, and nationally it is ranked 613 out of 1464 plants. Financial data for the plant is available 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
0 MWh
Latest Month
36.6K MWh
Annual Generation
34.3%
Capacity Factor
Duke Energy Carolinas, LLC · Data from 2015–2025
$25.0/MWh
PPA Price
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
This plant's balancing authority participates in the Southeast Energy Exchange Market (SEEM). SEEM is a bilateral exchange — no public nodal pricing.
No news articles linked yet for this plant.
News enrichment runs on demand — we have the pipeline, we just haven't fetched coverage for this plant yet. Request a detailed re-run and we'll add it.
No ask pi reports yet for this entity.
ask pi about 99 IslandsDuke Energy Carolinas (DUK)
Grid Voltage
44.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility