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Mesquite Generating Station: 3.01 million metric tons CO2e in 2023

Mesquite Generating Station in Arlington, Arizona reported 3,009,090 metric tons of CO2-equivalent direct emissions to the EPA for 2023, the #4 largest of 89 reporting direct emitters in Arizona and #160 nationally.

Direct emissions, 2023
3,009,090 t CO2e
Rank
#4 of 89 direct emitters in Arizona; #160 of 6,455 in the U.S.
Share of Arizona total
7.2%
Sector
Power Plants
Location
Arlington, Maricopa, Arizona
Parent company
ONWARD ENERGY LLC (50%); SALT RIVER PROJECT AGRICULTURAL IMPROVEMENT & POWER DISTRICT (50%)
NAICS code
221112
EPA GHGRP facility ID
1000052

By gas

Gast CO2eShare
Carbon Dioxide3,006,03599.9%
Nitrous Oxide1,6620.1%
Methane1,3940.0%

See facility 1000052 on EPA FLIGHT · All direct emitters in Arizona

Source: EPA Greenhouse Gas Reporting Program, 2023 reporting year, sector-level emissions from data.epa.gov (fetched October 31, 2026). Direct emissions in metric tons CO2e as EPA totals them: emitter sectors only, biogenic CO2 reported separately. Covers facilities that report as direct emitters; most emit 25,000 t CO2e or more a year. Reference only.

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