How many power plants does UNS Electric operate?

EIA-860M lists 5 operating plants against “UNS Electric, Inc” for 2026-07, totalling 240 MW of nameplate capacity in 1 state.

Is UNS Electric the owner of these plants?

EIA-860M names one reporting entity per generator. That entity operates the plant on the survey; ownership can sit with a parent, a partnership or a tax-equity structure that the form does not record.

Why are affiliates listed separately?

Because EIA files them separately. Rolling subsidiaries into a parent would need an ownership map EIA-860M does not publish, so this page does not invent one.

UNS Electric power plants

Every generating plant EIA-860M files against UNS Electric for 2026-07: 5 plants, 240 MW of nameplate capacity, across 1 state and 2 energy sources.

EIA files this entity as “UNS Electric, Inc”.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Plants: 5
Nameplate capacity: 240 MW
States: 1; AZ
Energy sources: 2

UNS Electric plants by energy source

Natural gas2 plants · 229 MW
Solar3 plants · 11 MW

Full list of UNS Electric power plants

Power plants operated by UNS Electric, Inc

Black Mountain Generating StationNatural Gas Fired Combustion Turbine	UNS Electric, Inc	Mohave	121	2	2008	Operating
ValenciaNatural Gas Fired Combustion Turbine	UNS Electric, Inc	Santa Cruz	108	4	1989	Standby/Backup
Rio Rico SolarSolar Photovoltaic	UNS Electric, Inc	Santa Cruz	6	1	2014	Operating
Jacobson 5 MW SolarSolar Photovoltaic	UNS Electric, Inc	Mohave	4.4	1	2017	Operating
La SenitaSolar Photovoltaic	UNS Electric, Inc	Mohave	1	1	2011	Operating

UNS Electric: FAQ

How many power plants does UNS Electric operate?: EIA-860M lists 5 operating plants against “UNS Electric, Inc” for 2026-07, totalling 240 MW of nameplate capacity in 1 state.
Is UNS Electric the owner of these plants?: EIA-860M names one reporting entity per generator. That entity operates the plant on the survey; ownership can sit with a parent, a partnership or a tax-equity structure that the form does not record.
Why are affiliates listed separately?: Because EIA files them separately. Rolling subsidiaries into a parent would need an ownership map EIA-860M does not publish, so this page does not invent one.