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Last updated: May 2026
Avg. sun hours/day
5.7 hrs
Avg. electricity rate
$0.11/kWh
Active incentives
2
Rocky Mountain Power (PacifiCorp) credits residential solar exports at the customer's retail tariff for new prosumers, with a transition to net billing under PSC Docket 17-035-T05 effective for systems above the avoided-cost compensation tier.
Rocky Mountain Power (RMP, the PacifiCorp Utah subsidiary) is the dominant residential utility in Utah. Under Schedule 137, residential solar customers operate under a transitional net-metering arrangement: most exported kWh credit at the retail tariff, with a portion compensated at avoided-cost rates per the Public Service Commission's Docket 17-035-T05 settlement. The compensation structure is more favourable than full export-credit rates seen in California's NEM 3.0 but less generous than 1:1 retail crediting. Utah Public Service Commission supervises the framework. Smaller municipal utilities (Provo Power, Logan Light & Power, Murray Power, etc.) operate independent net-metering programmes — confirm terms with the relevant utility.
100% property tax exemption on the assessed value added by residential renewable energy systems including solar PV.
Utah Code §59-2-1101 exempts the value added to residential property by renewable energy systems (solar PV, solar thermal, wind) from local property tax assessment. The exemption applies automatically when the county assessor evaluates residential property — homeowners do not need to file a separate claim form for residential PV. Practical impact: a $30,000 residential solar system that adds approximately $20,000 to home market value contributes $0 to the property's taxable assessed value, saving roughly $200/year in property tax at typical Utah millage rates over the system's life.
Utah's state residential solar tax credit completed its statutory phase-out in 2023 (zeroing in 2024). New residential PV installs receive no Utah-state PIT credit; federal credits expired with Section 25D on 2026-01-01.
Utah's once-generous residential solar tax credit (originally $2,000, then phased down to $400 by 2023, then zeroed) completed its statutory sunset in tax year 2023. As of 2026, there is no state residential PIT credit for new solar installations. Combined with the federal Section 25D ITC expiring 2026-01-01, Utah residential solar economics now rest entirely on Rocky Mountain Power net-metering compensation, the favourable solar resource (5.5–6.0 peak sun hours), and the state's relatively low retail electricity rate. Utah State Tax Commission processes prior-year claims through the standard PIT return; new installations file no solar-specific schedule.
Our calculator uses Utah's actual sun hours (5.7 hrs/day) and electricity rates.
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