Spillway

Power plant · Hydro

Key facts

Power plant · Hydro Operating

Commissioned: 1950
Net generation, 2025: 4,824 MWh
Grid: 34 kV to South Carolina Public Service Authority (SC)
Location: Berkeley County, South Carolina
Operated by: South Carolina Public Service AuthoritySourceEIA-860M Preliminary Monthly Electric Generator Inventory

Net generation MWh by year, 2001 to 2025

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All 5 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory

Attributes
Attribute	Value
Grid	Nerc region SERC Report year 2025 Grid voltage kv 34.50 Transmission owner South Carolina Public Service Authority Balancing authority code SC Balancing authority name South Carolina Public Service Authority
Fuel burned (MMBtu), 2025	16,459
Capacity factor, 2025	0.275
Net generation (MWh), 2025	4,824
Balancing authority code	SC

3 sources

Sources

EIA-860MOpen license · retrieved Nov 4, 2026
EIAOpen license · retrieved Nov 1, 2026Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
EIA-860M Preliminary Monthly Electric Generator Inventory