Tucson Electric Power
Balancing Authority Summary Information
Tucson Electric Power is ranked #37 out of 64 balancing authorities in terms of total annual electricity generation.
| Balancing Authority | Tucson Electric Power |
|---|---|
| States | Arizona New Mexico |
| Last Update | Aug 2026 |
| Annual Generation | 13.9 TWh |
| Power Plants | 55 |
| Utilities | 29 |
| Ranked #37 out of 64 in terms of net annual generation | |
| Ranked #30 out of 53 in terms of annual generation from natural gas | |
| Power Plant Types | Natural Gas | 59.9% Coal | 22.8% Solar | 10.6% Wind | 7.2% |
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Daily Net Generation for Tucson Electric Power for the past 3 Years
| Plant Name | Utility | Location | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|
| Wilmot Energy Center LLC | Wilmot Energy Center LLC | Tucson, AZ | 269 GWh | Mar 2021 | Jun 2026 | Solar |
| Wilmot Energy Center II | Wilmot Energy Center II, LLC | Sahuarita, AZ | 82 GWh | - | Jun 2026 | Solar |
| Valencia Solar | RWE Clean Energy | Tucson, AZ | 27 GWh | May 2013 | Dec 2025 | Solar |
| Valencia | UNS Electric, Inc | Nogales, AZ | 7 GWh | Jul 1989 | Dec 2025 | Natural Gas : 93.0% Distillate Fuel Oil : 7.0% |
| UASTP I | Tucson Electric Power Co | Tucson, AZ | 2 GWh | Nov 2010 | Dec 2025 | Solar |
| Tucson - CAVSARP | Onyx Asset Services Group | Marana, AZ | 6 GWh | Jul 2025 | Dec 2025 | Solar |
| TJX Tucson | SoCore Energy LLC | Tucson, AZ | 2 GWh | Jan 2018 | Dec 2025 | Solar |
| Tech Park Solar | RWE Clean Energy | Tucson, AZ | 12 GWh | Nov 2012 | Dec 2025 | Solar |
| SR McNeal | SR McNeal, LLC | McNeal, AZ | 54 GWh | Nov 2023 | Jun 2026 | Solar |
| Springerville | Tucson Electric Power Co | Springerville, AZ | 5 TWh | May 1985 | Jun 2026 | Subbituminous Coal : 99.3% |
| Roger Road WWTP | SunE M5C Holdings LLC | Tucson, AZ | 988 MWh | Jul 2010 | Dec 2025 | Solar |
| Rio Rico Solar | UNS Electric, Inc | Rio Rico, AZ | 3 GWh | Feb 2014 | Dec 2025 | Solar |
| Red Horse III | Red Horse III | Wilcox, AZ | 56 GWh | Jun 2016 | Dec 2025 | Solar |
| Red Horse 2 | Red Horse 2 | Willcox, AZ | 169 GWh | Jul 2015 | Jun 2026 | Solar : 68.6% Wind : 31.4% |
| Raptor Ridge | Tucson Electric Power Co | Tucson, AZ | 35 GWh | May 2022 | Dec 2025 | Solar |
| Prairie Fire | Tucson Electric Power Co | Tucson, AZ | 8 GWh | Nov 2012 | Dec 2025 | Solar |
| Pima Community College NW | Onyx Asset Services Group | Tucson, AZ | 3 GWh | Mar 2019 | Dec 2024 | Solar |
| Pima Community College - East Campus | Tesla Inc. | Tucson, AZ | 3 GWh | Jul 2017 | Dec 2025 | Solar |
| Pima Community College | Tesla Inc. | Tucson, AZ | 1 GWh | Jul 2019 | Apr 2025 | Solar |
| Picture Rocks Solar, LLC | MN8 Energy LLC | Marana, AZ | 50 GWh | Nov 2012 | Dec 2025 | Solar |
| Oso Grande Wind Farm | Tucson Electric Power Co | Maljamar, NM | 565 GWh | Apr 2021 | Jun 2026 | Wind |
| North Loop | Tucson Electric Power Co | Tucson, AZ | 1 GWh | Nov 1972 | Dec 2025 | Natural Gas |
| La Senita | UNS Electric, Inc | Kingman, AZ | 2 GWh | Oct 2011 | Sep 2025 | Solar |
| Jacobson 5 MW Solar | UNS Electric, Inc | Kingman, AZ | 9 GWh | Feb 2017 | Dec 2025 | Solar |
| Iron Horse Battery Storage Hybrid | RWE Clean Energy | Tucson, AZ | 4 GWh | Mar 2017 | Dec 2025 | Solar |
| H Wilson Sundt Generating Station | Tucson Electric Power Co | Tucson, AZ | 2 TWh | Nov 1958 | Jun 2026 | Natural Gas |
| Gray Hawk Solar | Gray Hawk Solar, LLC | Kingman, AZ | 140 GWh | May 2018 | Jun 2026 | Solar |
| Gila River Power Block 3 | Salt River Project | Gila Bend, AZ | 3 TWh | May 2003 | Jun 2026 | Natural Gas |
| Gato Montes Solar, LLC | Duke Energy Renewables Services | Tucson, AZ | 7 GWh | Nov 2012 | Dec 2025 | Solar |
| Fort Huachuca Solar PV Project | Tucson Electric Power Co | Sierra Vista, AZ | 35 GWh | Nov 2014 | Dec 2025 | Solar |
| Demoss Petrie | Tucson Electric Power Co | Tucson, AZ | 2 GWh | May 2001 | Dec 2025 | Natural Gas |
| Davis Monthan AFB (AZ) West Airfield | MN8 Energy LLC | Tucson, AZ | 30 GWh | Dec 2013 | Dec 2025 | Solar |
| Cogenra - TEP | Terraform Arcadia | Tucson, AZ | 2 GWh | Jun 2014 | Dec 2025 | Solar |
| Cogeneration 2 | University of Arizona | Tucson, AZ | 39 GWh | Oct 2002 | Jun 2026 | Natural Gas |
| Cogeneration 1 | University of Arizona | Tucson, AZ | 54 GWh | Oct 2002 | Jun 2026 | Natural Gas |
| Canyon Del Oro High School Solar | Luminace Solar Arizona 2, LLC | Oro Valley, AZ | 2 GWh | Oct 2016 | Dec 2025 | Solar |
| Broadway 3 - Tucson Phase I | MN8 Energy LLC | Tucson, AZ | 1 GWh | Feb 2011 | Dec 2025 | Solar |
| Broadway 2 - Tucson Phase II | MN8 Energy LLC | Tucson, AZ | 5 GWh | Nov 2013 | Nov 2025 | Solar |
| Borderlands Wind, LLC | Borderlands Wind, LLC | Quemado, NM | 238 GWh | Nov 2021 | Jun 2026 | Wind |
| Black Mountain Generating Station | UNS Electric, Inc | Golden Valley, AZ | 55 GWh | Apr 2008 | Dec 2025 | Natural Gas |
| Babacomari Solar | Babacomari Solar, LLC | Huachuca, AZ | 204 GWh | - | Jun 2026 | Solar |
| Avra Valley Solar | Solar Avra Valley LLC | Marana, AZ | 61 GWh | Dec 2012 | Dec 2025 | Solar |
| Avalon Solar II | Avalon Solar Partners II, LLC | Sahuarita, AZ | 43 GWh | Feb 2016 | Dec 2025 | Solar |
| Avalon Solar | Arevon Energy, Inc. | Pima, AZ | 64 GWh | Nov 2014 | Dec 2025 | Solar |
| Amphitheater High School Solar | Luminace Solar Arizona 2, LLC | Tucson, AZ | 2 GWh | Nov 2016 | Dec 2025 | Solar |
| Amazon TUS2 | SkyHigh 2 Solar | Tucson, AZ | 6 GWh | May 2022 | Dec 2025 | Solar |
| Actus Lend Lease DMAFB | Tesla Inc. | Tucson, AZ | 3 GWh | Nov 2009 | Dec 2024 | Solar |
Surrounding Balancing Authorities
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #25 | Arizona Public Service Company | 25.4 TWh | 100 |
| #54 | Arlington Valley, LLC | 3.2 TWh | 1 |
| #7 | California Independent System Operator | 170.0 TWh | 2,135 |
| #46 | El Paso Electric Company | 7.3 TWh | 37 |
| #49 | Imperial Irrigation District | 6.3 TWh | 66 |
| #28 | Los Angeles Department of Water and Power | 19.2 TWh | 131 |
| #22 | Nevada Power Company | 37.9 TWh | 143 |
| #33 | Public Service Company of New Mexico | 16.6 TWh | 137 |
| #19 | Salt River Project Agricultural Improvement and Power District | 60.5 TWh | 49 |
| #40 | Western Area Power Administration - Desert Southwest Region | 10.4 TWh | 34 |
Balancing Authorities with Similar Net Generation
| Rank | Balancing Authority | Annual Net Generation | # Power Plants |
|---|---|---|---|
| #32 | NorthWestern Corporation | 17.9 TWh | 70 |
| #33 | Public Service Company of New Mexico | 16.6 TWh | 137 |
| #34 | Gridforce Energy Management, LLC | 16.2 TWh | 1 |
| #35 | Seminole Electric Cooperative | 14.2 TWh | 5 |
| #36 | Idaho Power Company | 14.1 TWh | 169 |
| #37 | Tucson Electric Power | 13.9 TWh | 55 |
| #38 | Balancing Authority of Northern California | 13.9 TWh | 90 |
| #39 | Public Utility District No. 2 of Grant County, Washington | 10.5 TWh | 5 |
| #40 | Western Area Power Administration - Desert Southwest Region | 10.4 TWh | 34 |
| #41 | PacifiCorp West | 9.7 TWh | 140 |