World Power Plants

Hardin Generator Project115.7 MW Coal

CoalVerified: Jul 2026

Hardin Generator Project is a 115.7 MW coal and gas-fired power plant located in the United States, operated by Heorot Power Management since its commissioning in 2006. This facility contributes to the coal and gas power generation in the region. It ranks as the 236th largest coal plant in the United States. With 115.7 MW, it represents 0.04% of the country's total coal capacity of 261,836 MW. The United States has 297 coal plants with a combined capacity of 261,836 MW. Compared to the largest coal plant, W A Parish at 4,008 MW, Hardin Generator Project is about 1/35th the size. Coal remains a significant energy source in the U.S., providing a substantial portion of electricity generation. The Hardin facility utilizes both coal and gas to optimize energy output. It is situated in Montana, approximately 100 km from the city of Billings.

Capacity
115.7 MW
Commissioning Year
2006

20 years old

Owner
Heorot Power Management
Location
45.7578°, -107.6000°

United States of America, North America

Context & rankings
  • 1,971. largest of 10,098 plants in United States of America
  • #9,459 worldwide by installed capacity
  • #2,322 of 2,793 Coal plants worldwide
  • 0.01% of the installed capacity of United States of America
Age & fleet comparison

20 years in operation

Coal fleet average: 29.2 years

Operator portfolio

Heorot Power Management operates 1 plants totalling 116 MW

Regional density

7 plants within 100 km, 2,752 MW combined

Nearest plant: South Mills Solar LLC (4 km)

Location

Coordinates:: 45.757800, -107.600000
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Carbon Footprint820 g CO₂/kWh
Annual CO₂
457.1 Kt
557 GWh/year × 820 g/kWh
Cumulative CO₂
9.14 Mt
Over 20 years of operation
Est. Retirement
2046
20 years remaining
Annual emissions equivalent to
99.4K
cars per year
60.9K
homes per year
20.8M
trees to offset

Estimates based on Coal emission factor (820 g CO₂/kWh) and capacity factor (55%). Actual emissions may vary based on operating conditions, efficiency, and fuel quality.

Technical Details

Primary Fuel Type
Coal
Energy Source
Non-Renewable
Country
United States of America
Continent
North America
Data Source
Global Power Plant Database

United States of AmericaEnergy Profile

10,098
Total Plants
1420.7 GW
Total Capacity
GasCoalNuclearWind
Top Fuels

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