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24.5 MW Hydro operating in Putnam, WV — PJM Interconnection, LLC
24.5 MW
Nameplate Capacity
3
Generators
units
Conventional Hydroelectric
Technology
1938
Operating Since
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Appalachian Power Co | Appalachian Power | — |
| Owner(s) | Appalachian Power Co | American Electric Power Company | — |
| Status | Operating | — | — |
The Winfield hydroelectric plant is located in Putnam County, West Virginia. The plant, which began operating in 1938, has a total capacity of 24.5 MW across three generators utilizing conventional hydroelectric technology. It is owned by American Electric Power Company and operated by Appalachian Power Co. The primary fuel source is water (WAT).
In the most recent year of reported generation, Winfield produced 84,415 MWh, achieving a capacity factor of 39.2%. The plant operates within the PJM Interconnection, LLC balancing authority and the RFC NERC region. Winfield is ranked as the 7th largest hydroelectric plant out of 15 in West Virginia, and 448th out of 1464 nationally. Financial data indicates an installed cost of $1,184.94 per kW.
Generated from EIA, GEM, and public data sources
ISO/RTO
PJM
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
PJM Interconnection, LLC (PJM)
Grid Voltage
69.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
9.7K MWh
Latest Month
84.4K MWh
Annual Generation
39.2%
Capacity Factor
Run-of-river hydro · Appalachian Power Company · Data from 2015–2024
$1,398/kW
Installed Cost
$13.2/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Market Position
ISO/RTO Market
PJM
LMP Node
WINFIELD4 KV WI1
Pricing Hub
AEP-DAYTON HUB
Location Type
Generation Node
Node Source
Curated node match
Last updated 2026-03-26
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