World Power Plants

Black Mountain Generating Station121 MW Natural Gas

GasVerified: Jul 2026

Black Mountain Generating Station is a 121 MW gas-fired power plant located in Arizona, United States, operated by UNS Electric Inc since its commissioning in 2008. The facility generates electricity from natural gas, contributing to the local energy supply. This plant ranks as the 878th largest gas plant in the United States. With a capacity of 121 MW, it represents 0.02% of the total gas capacity of 592,244 MW in the country. The United States has 1,883 gas plants with a combined capacity of 592,244 MW. Compared to the largest gas plant, West County Energy Center at 4,263 MW, Black Mountain Generating Station is approximately 0.03 times its size. Natural gas is an essential energy source in Arizona, accounting for about 40% of the state's electricity generation. The plant's location in the northwestern part of the state allows it to efficiently tap into regional gas supplies. It is situated about 100 miles from Las Vegas, Nevada.

Capacity
121 MW
Commissioning Year
2008

18 years old

Owner
UNS Electric Inc
Location
35.0361°, -114.1594°

United States of America, North America

Context & rankings
  • 1,921. largest of 10,098 plants in United States of America
  • #9,221 worldwide by installed capacity
  • #3,103 of 5,146 Natural Gas plants worldwide
  • 0.01% of the installed capacity of United States of America
Age & fleet comparison

18 years in operation

Natural Gas fleet average: 26.9 years

Operator portfolio

UNS Electric Inc operates 5 plants totalling 240 MW

Regional density

15 plants within 100 km, 1,969 MW combined

Nearest plant: Black Mountain Solar LLC (1.5 km)

Location

Coordinates:: 35.036100, -114.159400
Open in Google Maps
Carbon Footprint490 g CO₂/kWh
Annual CO₂
233.7 Kt
477 GWh/year × 490 g/kWh
Cumulative CO₂
4.21 Mt
Over 18 years of operation
Est. Retirement
2038
12 years remaining
Annual emissions equivalent to
50.8K
cars per year
31.2K
homes per year
10.6M
trees to offset

Estimates based on Gas emission factor (490 g CO₂/kWh) and capacity factor (45%). Actual emissions may vary based on operating conditions, efficiency, and fuel quality.

Technical Details

Primary Fuel Type
Gas
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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