Solar Panel Cost in Utah: $2.50/W, 23.8-Year Payback

Solar in Utah costs about $20,000 for 8 kW at $2.50/W and pays back in roughly 23.8 years at 13.1¢/kWh with the federal credit at $0.

Updated September 2026 · Source: EIA Electric Power Monthly Table 5.6.A (July 2026 data) · next EIA update ~Oct 23

By SolarCostData Data Desk · Reviewed September 2026 · Corrections log

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Why this number

Solar panels in Utah cost about $2.50 per watt — $20,000 for a typical 8 kW system — and pay back in roughly 23.8 years at the state’s 13.1¢/kWh average rate, with the 2026 federal credit at $0. Net billing pays exports below retail here.

Everything below uses Utah’s real average residential electricity rate (13.1¢/kWh, EIA) and a production band of about 1,430 kWh per kW per year. Both are stated openly because they are the two inputs that decide the answer. These are estimates for sanity-checking a quote, not a quote.

Run it with your own numbers

Why Utah’s payback lands where it does

Utah’s rate fell about two percent to 13.1 cents per kilowatt-hour this July from 13.45 cents a year earlier, keeping the state at rank 48 — the third-cheapest grid measured. Strong yield of 1,430 kilowatt-hours per installed kilowatt reflects Utah’s genuinely good sun, but it isn’t enough to overcome such a low rate, and the payback lands around 23.8 years. PacifiCorp, the dominant utility with nearly 947,000 residential customers, bills 12.5 cents, below the state average, so PacifiCorp customers should expect a payback running a bit longer than the 23.8-year state figure, while Provo City’s municipal utility, at 11.4 cents, would see it stretch further still. Utah compensates exports under net billing rather than full retail, so its excellent solar resource is being held back both by how cheap the underlying grid electricity already is and by an export credit worth less than the rate itself.

Electric utilities in Utah

The state average hides real spreads between utilities. The largest residential utilities EIA-861 lists for Utah, with each one’s own average bundled residential price (2024 — revenue ÷ sales, the audited annual figure, not this month’s tariff):

Your utility decides Utah’s real number — the ZIP lookup finds it in three clicks; the 2024 annual utility averages above sit apart from the June-2026 monthly 13.1¢ state figure.

Utah’s rate, the last 24 months

July 2025 → July 2026: 13.45¢ → 13.12¢. The rate tracker has every month against the US average.

An 8 kW system in Utah, priced out

The $2.50/W used above comes from EnergySage marketplace quotes (August 2026). Those are quotes in a competitive online market, not signed contract prices.

Read that table with one caveat: $2.50/W is Utah’s market average, and it is the input most likely to differ for you. A quote $0.50 per watt above or below the $2.50 used here moves the payback by roughly a year and a half in either direction.

How much sun Utah actually gets

A kilowatt of panels in Utah produces about 1,430 kWh a year on an unshaded, south-facing roof at a 20-degree pitch. Sites that swap Utah’s 1,430 kWh for a single national average are how Arizona and Washington end up with identical paybacks despite a 1.6x real difference in output.

That figure is a five-point cluster around Utah’s largest metro area, which keeps it representative of where most people actually live rather than of the state’s best site.

City-level figures for Utah

We have separately modeled production for 1 Utah city, and they are 0% apart — Salt Lake City at 1,486 kWh per kW against Salt Lake City at 1,486. Installed cost held at $2.50/W; paybacks use each city’s own utility tariff and export treatment where we have official EIA-861 data, which is why some differ sharply from this page’s state-average model.

• Salt Lake City — 1,486 kWh per kW, payback about 23.7 years (on its own utility’s tariff)

Those are real PVGIS-NSRDB location points, not the state figure scaled by guesswork. All Utah and other city figures .

Two adjustments matter before you apply this to your own roof:

• Shading and orientation. The 1,430 kWh figure assumes an unobstructed south-facing array. A real Utah roof — its own azimuth and pitch, a tree or a chimney — typically produces 10-25% less; this page models 90% of the ideal, so the 10,296 kWh/year above is already derated from 11,440. A genuinely unshaded south roof can adjust upward in the calculator.
• Year-to-year weather moves output by roughly ±5% either way.

How Utah compares with the other 49

Utah ranks 48th of 50 on electricity price and 42nd on annual output value per kW installed — close enough that its rate is a fair proxy for its solar case, which is not true everywhere. Its immediate neighbors on price are North Dakota (13.4¢) just above and Nevada (12.8¢) just below.

Idaho is Utah’s closest comparable-rate analogue — 13.7¢/kWh, roughly 1,380 kWh per kW, and a payback about 1.1 years apart (22.7 vs 23.8 years). Use it as a directional marker rather than a proxy — the gap is real.

Net billing: the rule that decides solar in Utah

Utah does not credit exports at the retail rate — this is net billing , not net metering. The program is Rocky Mountain Power Export Credit Rate, in force since 2026-03-01, and it credits surplus power at a published rate of 4.40¢/kWh — against a retail rate of 13.1¢.

4.855c summer, 4.033c winter; modeled at the 4.4c midpoint. Resets each 1 March.

Because a typical Utah home uses only about 40% of its generation as it is produced, most of what the panels make is sold at 4.4¢. That is why the payback above is 23.8 years rather than the 15.3 years the same hardware would return under full-retail net metering. Raising self-consumption — a battery (worth its own arithmetic: is a home battery worth it? ), an EV charged in daylight, daytime occupancy — is the lever that closes the gap. Whether a Utah buyer should own a battery or take a lease/TPO deal is priced in the battery buy vs. TPO calculator .

One limit worth knowing: this reflects investor-owned, state-regulated utilities; Utah’s municipal utilities and co-ops are exempt in most cases and set their own terms.

What is actually left in Utah

The 30% federal credit ended for systems completed after December 31, 2025, so it is $0 here as everywhere. What remains is state, utility and local — and it varies far more than the federal rule ever did.

Do not budget for Renewable Energy Systems Tax Credit. Phased to zero. No longer available for residential systems.

If that list looks thin, it is — the solar incentives hub shows which states still put real money on the table, and where Utah sits among them.

Is solar worth it in Utah at 13.1¢/kWh?

Utah has decent sun and cheap electricity, which is a frustrating combination for solar. The panels will produce; what they produce simply is not worth much at 13.1¢/kWh.

At a horizon that long, owning the roof is not the only route to cheaper power. Community solar versus rooftop walks through the subscription alternative — no roof, no loan, and no 23.8-year wait — which is worth reading before committing capital in a market like Utah’s.

If you want a fast gut check before running the numbers above, the should-I-go-solar screener asks the four questions that matter most in a low-rate state like Utah.

Two numbers put that in context. At Utah’s rate, the electricity an 8 kW system would produce is worth about $812 a year, so the system costs roughly 24.6 years of that output to buy outright — a simple division, before costs. The headline 23.8-year figure above is the full model: it additionally counts 2.5%/yr rate inflation, $150/yr of running costs and one inverter replacement, which is why the two differ slightly. And doing nothing is not free: 25 years of that same electricity, with rates rising at 2.5% a year, comes to about $46,147.

For a 15-year payback in Utah — given its sunshine rather than a national average — the electricity rate would need to be about 13.4¢/kWh. Utah is at 13.1¢, which is below it.

Sources and method

• Electricity rate: U.S. Energy Information Administration, average price by state — EIA Table 5.6.A, July 2026 data (released Sep 2026). Rate shown is Utah’s residential average.
• Production: PVGIS v5.2 with the PVGIS-NSRDB radiation database, 1,430 kWh/kW for a five-point cluster around Utah’s largest metro, then the 90% real-roof factor; the assumptions, the ERA5 cross-check and the attribution are on the methodology page .
• Incentives: DSIRE — Database of State Incentives for Renewables & Efficiency, NC Clean Energy Technology Center. Verify current amounts and fund status before relying on them.
• Federal credit status: IRS, Residential Clean Energy Credit . See our 2026 energy tax credit guide .
• Payback model: shared with the solar savings calculator — 2.5%/yr utility inflation, 0.5%/yr degradation, federal credit $0.

Utah’s rate (13.1¢, EIA Table 5.6.A, July 2026 data (released Sep 2026)), export regime, production factor, installed cost and programs were last verified on 25 September 2026; Utah’s export credit resets on its tariff cycle and incentive budgets run out mid-year, so confirm current terms before acting. Not tax or financial advice.

Frequently asked questions

How we calculated this

Worked for Utah: 8 kW × 1,000 × $2.50/W = $20,000 gross (federal credit $0, so net before state incentives); 10,296 kWh a year × the blended kWh value at 13.1¢ retail and 4.4¢ export ≈ $812 year-1 saving; payback ≈ $20,000 ÷ $812 = 23.8 years with 2.5%/yr rate growth, 0.5%/yr degradation and one inverter replacement in the 25-year model.

Sources: U.S. Energy Information Administration (EIA) electricity rates · DSIRE incentive records · public IRS/OBBBA guidance. Figures are modeled estimates, not quotes or tax advice. See our methodology.

States with a comparable tariff picture

• Why is my electric bill so high? — Splits a bill jump into weather, rate and usage — with Utah’s own EIA rate history built in.
• Heat pump crossover temperature — Cold-zone question: the outdoor temperature where gas beats a NEEP-listed heat pump at Utah’s rates.
• Cost to heat a home in Utah — Gas, propane, heating oil, heat pump and resistance per MMBtu at Utah’s own EIA winter prices — the heating side of the same rate.
• Electricity rate tracker — Utah’s last 24 months of EIA rates, charted against the US average.
• Find your rate by ZIP — Utah averages hide utility gaps — look yours up from EIA-861 in three clicks.
• Net metering by state (2026 table) — Every state’s export regime with program, date and source — the rule behind Utah’s payback.
• Solar panel cost in Nevada — Same export regime at 12.8¢/kWh and a 20.8-year payback — the closest tariff comparison to Utah.
• Solar panel cost in Idaho — Same export regime at 13.7¢/kWh and a 22.7-year payback — the closest tariff comparison to Utah.
• Solar panel cost in Kentucky — Same export regime at 13.8¢/kWh and a 22.6-year payback — the closest tariff comparison to Utah.