Solar Panel Cost in Wyoming: $3.54/W, 18.1-Year Payback

Solar in Wyoming costs about $28,320 for 8 kW at $3.54/W and pays back in roughly 18.1 years at 14.4¢/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 Wyoming cost about $3.54 per watt — $28,320 for a typical 8 kW system — and pay back in roughly 18.1 years at the state’s 14.4¢/kWh average rate, with the 2026 federal credit at $0. Full-retail net metering is assumed; confirm with your utility.

Everything below uses Wyoming’s real average residential electricity rate (14.4¢/kWh, EIA) and a production band of about 1,475 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 Wyoming’s payback lands where it does

Wyoming’s rate fell about two percent to 14.4 cents per kilowatt-hour this July from 14.64 cents a year earlier, a rank-40 rate on the cheaper side of the national picture. Strong yield of 1,475 kilowatt-hours per installed kilowatt reflects the state’s wide-open, sunny plains, and it pulls the payback down to about 18.1 years despite an installed cost of 3.54 dollars per watt that runs higher than many sunnier states manage. PacifiCorp, Wyoming’s largest utility with over 118,000 residential customers, bills below the statewide average at 13.4 cents, so PacifiCorp customers should expect a payback a bit longer than the 18.1-year state figure, while Cheyenne Light Fuel & Power, at 17.0 cents, comes much closer to it. Full retail net metering credits exports at whichever rate applies, meaning Wyoming’s genuinely strong solar resource is the main thing keeping the payback reasonable despite installed costs on the high side.

Electric utilities in Wyoming

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

Your utility decides Wyoming’s real number — the ZIP lookup finds it in three clicks; the 2024 annual utility averages above sit apart from the June-2026 monthly 14.4¢ state figure.

Wyoming’s rate, the last 24 months

July 2025 → July 2026: 14.64¢ → 14.36¢. The rate tracker has every month against the US average.

An 8 kW system in Wyoming, priced out

The $3.54/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: $3.54/W is Wyoming’s market average, and it is the input most likely to differ for you. A quote $0.50 per watt above or below the $3.54 used here moves the payback by roughly a year and a half in either direction.

How much sun Wyoming actually gets

A kilowatt of panels in Wyoming produces about 1,475 kWh a year on an unshaded, south-facing roof at a 20-degree pitch. Sites that swap Wyoming’s 1,475 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 Wyoming’s largest metro area, which keeps it representative of where most people actually live rather than of the state’s best site.

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

• Shading and orientation. The 1,475 kWh figure assumes an unobstructed south-facing array. A real Wyoming 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 10,620 kWh/year above is already derated from 11,800. A genuinely unshaded south roof can adjust upward in the calculator.
• Year-to-year weather moves output by roughly ±5% either way.

Why Wyoming’s ranking is better than its price suggests

Here is the part a rate table alone will not tell you. Wyoming ranks 40th of 50 on electricity price, but 31st on what a kilowatt of panels actually earns in a year — because a kW here produces about 1,475 kWh, well above what a cloudier state manages. Sunshine moves Wyoming up 9 places. Anyone ranking states purely by electricity price is understating this one. Its immediate neighbors on price are Mississippi (14.5¢) just above and Oklahoma (14.3¢) just below.

Washington is Wyoming’s closest comparable-rate analogue — 14.7¢/kWh, roughly 1,045 kWh per kW, and a payback within about a year of this one (18.5 vs 18.1 years). If you find Wyoming quotes hard to sanity-check, Washington numbers are broadly transferable.

The export question worth asking your Wyoming utility

Wyoming credits exported power at the retail rate — full net metering — under W.S. 37-16-101, so a kilowatt-hour you send to the grid is worth the same as one you buy. That is the best case for solar economics, and it is why the payback above is what it is.

It is also the assumption most likely to change. Twenty-two states have already moved to net billing. If Wyoming did the same on typical terms, this system would take about 23.5 years to pay back instead of 18.1 — 5.4 years’ difference from a policy change, with no change to the hardware. The households best placed for that day are the ones already storing their surplus, which is why what a home battery actually costs is worth knowing even while full retail holds.

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

What is actually left in Wyoming

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.

Wyoming offers no state-level solar tax credit or rebate. Utility-level rebates, and the tax exemptions below, are where any remaining help comes from — those are set locally, so DSIRE and your own utility are the places to look.

Tax exemptions

There is no property-tax exemption, so a system may raise your assessed value. Ask your assessor what it would add.

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

Is solar worth it in Wyoming at 14.4¢/kWh?

Wyoming has abundant sun and very cheap power, and cheap power wins. Generating 1,475 kWh per kW is impressive until you notice each one only displaces 14.4¢.

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 18.1-year wait — which is worth reading before committing capital in a market like Wyoming’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 Wyoming.

Two numbers put that in context. At Wyoming’s rate, the electricity an 8 kW system would produce is worth about $1,525 a year, so the system costs roughly 18.6 years of that output to buy outright — a simple division, before costs. The headline 18.1-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 $52,091.

For a 15-year payback in Wyoming — given its sunshine rather than a national average — the electricity rate would need to be about 17.7¢/kWh. Wyoming is at 14.4¢, 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 Wyoming’s residential average.
• Production: PVGIS v5.2 with the PVGIS-NSRDB radiation database, 1,475 kWh/kW for a five-point cluster around Wyoming’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.

Wyoming’s rate (14.4¢, 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; Wyoming’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 Wyoming: 8 kW × 1,000 × $3.54/W = $28,320 gross (federal credit $0, so net before state incentives); 10,620 kWh a year × the blended kWh value at 14.4¢ retail ≈ $1,525 year-1 saving; payback ≈ $28,320 ÷ $1,525 = 18.1 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 Wyoming’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 Wyoming’s rates.
• Cost to heat a home in Wyoming — Gas, propane, heating oil, heat pump and resistance per MMBtu at Wyoming’s own EIA winter prices — the heating side of the same rate.
• Electricity rate tracker — Wyoming’s last 24 months of EIA rates, charted against the US average.
• Find your rate by ZIP — Wyoming 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 Wyoming’s payback.
• Solar panel cost in Washington — Same export regime at 14.7¢/kWh and a 18.5-year payback — the closest tariff comparison to Wyoming.
• Solar panel cost in Nebraska — Same export regime at 13.8¢/kWh and a 20.8-year payback — the closest tariff comparison to Wyoming.
• Solar panel cost in Montana — Same export regime at 15.0¢/kWh and a 15.2-year payback — the closest tariff comparison to Wyoming.