547.5 MW Conventional Hydroelectric (300 MW) + Hydroelectric Pumped Storage (247 MW) operating in Pittsylvania, VA — PJM Interconnection, LLC
547.5 MW
Nameplate Capacity
5
Generators
units
Hybrid (2)
Technology
Conventional Hydroelectric + Hydroelectric Pumped Storage
1965
Operating Since
Coordinates
37.0413, -79.5356
County
Pittsylvania, VA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Appalachian Power Co | Appalachian Power | American Electric Power |
| Owner(s) | Appalachian Power Co | American Electric Power Company | — |
| Status | Operating | operating | — |
Smith Mountain Dam is a concrete arch dam located on the Roanoke River in Virginia, creating Smith Mountain Lake. The dam was built by Appalachian Power between 1960 and 1963 for the purposes of pumped-storage hydroelectricity. The dam created Smith Mountain Lake as its reservoir, where recreation and real estate have become popular.
Read more on WikipediaLocated in Pittsylvania County, Virginia, the Smith Mountain hydroelectric plant has a total capacity of 547.5 MW across 5 generators. The plant began operating in 1965 and is owned by American Electric Power Company, with Appalachian Power Co. as the listed operator per EIA data. The primary fuel source is water (WAT), and the plant utilizes both conventional hydroelectric and pumped storage technologies, classifying it as a hybrid facility. Smith Mountain operates within the PJM Interconnection, LLC balancing authority and the RFC NERC region.
Smith Mountain is the second-largest of three hydroelectric plants in Virginia, and ranks 45th out of 194 nationally. Financial data indicates an installed cost of $217.89 per kW, based on FERC filings. News coverage of the plant includes 5 articles related to hazards and 4 related to industry topics.
Generated from EIA, GEM, and public data sources
NERC Region
RFC
Balancing Authority
PJM Interconnection, LLC
Grid Voltage
138 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
−7.7K MWh
Net Charging
-86.8K MWh
Annual Net Energy
-1.8%
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.
$259/kW
Installed Cost
$50.4/MWh
Operating Cost
Appalachian Power Company
Reporting Utility
Cumulative Installed Cost
Per-Unit Cost Trends
Point of Interconnection
Nearest Substation
Smith Mountain Substation · 138 kV
Substation Distance
0 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
PJM
LMP Node
SMITHMOU13.8 KV SM1
Pricing Hub
DOMINION HUB
Location Type
Generation Node
Node Source
Curated node match
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From the archives: Building Smith Mountain Lake
A look back at the building of Smith Mountain Lake, which reached "full pond" for the first time in March 1966.
Extended drought causes Smith Mountain Lake water levels to drop multiple feet
SMITH MOUNTAIN LAKE, Va. (WFXR) – Appalachian Power's website, smithmountainproject.com, tracks current levels of Smith Mountain Lake,...
APCo warns of lower-than-normal water levels at SML
SMITH MOUNTAIN LAKE, Va. (WDBJ) - A dry weather spell paired with lower than average rains have led to lower water levels than usual at...
Last updated 2026-03-14
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