CUMBERLAND

Operating

Coal power plant

Capacity: 2,600 MW
Primary fuel: Coal
County: Stewart County
Operator: TENNESSEE VALLEY AUTHORITY
Status: Operating
Commissioned: 1973
EIA plant ID: 3399
Generators: 2
Technology: Conventional Steam Coal
Net generation (2024): 9,512 GWh
Capacity factor (2024, EIA nameplate): 42%
Data vintage: EIA-860 2024 final; EIA-923 2022-2024 final
Coordinates: 36.3916, -87.6550

CUMBERLAND, a 2,600 MW Coal power plant in Stewart County, Tennessee. Operated by TENNESSEE VALLEY AUTHORITY, commissioned 1973.

How CUMBERLAND compares

With 2,600 MW of capacity, CUMBERLAND is the largest of the 53 operating power plants Bywatts maps in Tennessee and the largest of the 7 operating Coal plants in the state. It accounts for about 28% of Tennessee's operating Coal capacity and 13% of all operating capacity in the state. Nationally it is the 12th-largest of the 324 operating Coal plants in the database. Commissioned in 1973, it is newer than 58% of the 53 operating Tennessee plants with a recorded commissioning year. Its operator, TENNESSEE VALLEY AUTHORITY, runs 32 operating plants in Tennessee totaling 19,142 MW.

EIA-860 lists 2 generators at the site with 2,600 MW of nameplate capacity, all conventional steam coal technology. Net generation was 9,512 GWh in 2024 (a 42% capacity factor), up 33% from 2022.

Grid neighborhood

The nearest named substation is ERIN, about 4.6 miles away; the closest transmission line found within 10 miles is a 161 kV line owned by TENNESSEE VALLEY AUTHORITY, under 0.1 miles away. One other operating power plant sits within 25 miles: CHEATHAM (36 MW, Hydro).

Computed by Bywatts from HIFLD power plant, substation and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology

Weather peril exposure

CUMBERLAND is a 2,600 MW coal power plant in Stewart County, TN, operated by TENNESSEE VALLEY AUTHORITY, commissioned in 1973. Stewart County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.7 of 5 at the 43rd national percentile. Earthquake is the leading peril, rated Relatively Low by FEMA at the 92nd percentile.

The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a coal plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.

2.7 of 5Modeled catastrophe exposure

ElevatedExposure band

EarthquakeLeading peril

Very LowFEMA county risk rating

Stewart County hazard ratings

Peril	FEMA rating	National percentile	Peril score	Events per year
Earthquake	Relatively Low	92nd	4.7 of 5	<0.01
Strong wind	Relatively Low	89th	4.6 of 5	4.3
Ice storm	Relatively Moderate	88th	4.5 of 5	1.1
Tornado	Relatively Moderate	81st	4.3 of 5	0.42
Winter weather	Relatively Low	81st	4.2 of 5	6.2
Heat wave	Relatively Low	48th	2.9 of 5	5.6
Hail	Very Low	45th	2.8 of 5	2.9
Riverine flooding	Very Low	41st	2.6 of 5	1.2
Lightning	Relatively Moderate	35th	2.4 of 5	56.6
Hurricane	Very Low	26th	2.1 of 5	<0.01
Wildfire	Very Low	13th	1.5 of 5	<0.01

Perils not assessed in Stewart County

These perils carry no usable National Risk Index figure for this county, so they are excluded from the scoring rather than scored zero. A zero would claim the peril was assessed and found benign.

Peril	Why it is not scored
Coastal flooding	FEMA rating is "Not Applicable" for this county

Model hail, wind and flood exposure for Stewart County in the weather risk calculator

Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.

Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level.