Wyoming solar calculator
Size a Wyoming home solar system from your electric bill — kW, panel count, roof area, true cost with no federal credit for 2026 installs, and payback.
Quick answer: At $0.144/kWh and 5.2 peak sun hours, a $200/month bill needs about 11.48 kW — 28 × 410 W panels covering ~56 m². Gross cost is ~$38,114 with no federal credit for systems installed after 2025, offsetting $2,400 a year for a ~15.9 year payback.
Your details
Ballpark, not gospel. Ballpark, not gospel. Sized at 78% real-world output with the Wyoming sun-hour average — confirm shading, roof angle and your utility's avoided-cost buyback rate with a local installer before buying. Net metering is 1:1 at the retail rate within each billing month, but year-end leftover credits are bought back at avoided cost (~1.418¢/kWh on Rocky Mountain Power) — size to annual use, since January leftovers are nearly worthless.
The 30% credit ended — what changed
The residential clean energy credit (26 U.S.C. § 25D) gave homeowners a 30% credit on solar installed from 2022 through 2025. The July 2025 tax law ended it: no credit is available for property placed in service after December 31, 2025. That is why every figure on this page is ~30% higher than pre-2026 guides show. If your system went live by the end of 2025, tick the box above to see the credit applied; leased systems may still benefit because the leasing company claims the commercial credit. Source: IRS — Residential Clean Energy Credit.
Typical Wyoming system sizes by monthly bill
| Monthly bill | System size | Panels (410 W) | Net cost (no 2026 federal credit) | Payback |
|---|---|---|---|---|
| $100 | 5.74 kW | 14 | $19,057 | 15.9 years |
| $200 | 11.48 kW | 28 | $38,114 | 15.9 years |
| $300 | 17.22 kW | 42 | $57,170 | 15.9 years |
Computed at $0.144/kWh, 5.2 peak sun hours and $3.32/W installed, with no federal credit for 2026 installs. Run your exact bill above.
Solar in Wyoming: the details
Solar cost in Wyoming
Solar costs in Wyoming are reported, not marketplace-quoted. EcoGen America's Wyoming cost index reports a reported/indicative range of $3.00–$3.63/W installed — this is an index estimate, not EnergySage marketplace data, so treat it as approximate. A typical ~11.5 kW Wyoming system would run around $38,100 at the $3.32/W midpoint, with no federal credit for 2026 homeowner installs.
What moves the number: roof complexity, panel tier, and — significantly — the thin installer market. Get at least three quotes — spreads of $0.50/W between installers are common.
Export rules: getting paid for surplus power
Wyoming law (W.S. 37-16-101) requires net metering at the full retail rate within each billing month for systems up to 25 kW — month to month, exports earn what you pay. But any credits still on the books at year-end are bought back at the utility's avoided cost — about 1.418¢/kWh on Rocky Mountain Power in 2026, roughly a tenth of the ~14.4¢ retail rate.
Practical takeaway: size to annual use, not above it — January leftovers are nearly worthless — and in Wyoming's strong-sun market the thin installer base (with indicative quotes of $3.00–$3.63/W) means shopping quotes is the single biggest lever.
Wyoming solar incentives
No major statewide solar incentive was found in 2026 sources. Wyoming offers no solar rebate or tax credit — and its sales tax exemption for renewable equipment ended in 2012, so the 5% state sales tax applies to your system.
With no incentive stack and thin-installer pricing, the economics rest on Wyoming's excellent sun (5.2 peak hours) and right-sizing to annual use.
Is solar worth it in Wyoming?
Verdict: marginal. The calculator puts a $200/month bill at a ~15.9-year payback with no federal credit — Wyoming's excellent sun (5.2 peak hours) fights a thin installer market, indicative $3.00–$3.63/W pricing, and zero state incentives. Monthly 1:1 net metering is the one strong tailwind, so size to annual use (January leftovers sell for ~1.4¢/kWh) and shop hard for quotes.
Questions people actually ask
Straight answers, no fluff. Then run your own numbers above.
How many solar panels do I need in Wyoming?
It follows your bill. At the Wyoming average of $0.144/kWh and 5.2 peak sun hours, a $200/month bill needs about an 11.48 kW system — roughly 28 × 410 W panels covering ~56 m² of roof.
What is the average cost of solar panels in Wyoming in 2026?
Solar costs in Wyoming are reported, not marketplace-quoted. EcoGen America's Wyoming cost index reports a reported/indicative range of $3.00–$3.63/W installed — this is an index estimate, not EnergySage marketplace data, so treat it as approximate. A typical ~11.5 kW Wyoming system would run around $38,100 at the $3.32/W midpoint, with no federal credit for 2026 homeowner installs.
Does Wyoming have net metering?
Yes, within the month. Wyoming law (W.S. 37-16-101) requires net metering at the full retail rate within each billing month for systems up to 25 kW — but credits left over at year-end are bought back at the utility's avoided cost, about 1.418¢/kWh on Rocky Mountain Power in 2026.
Does Wyoming offer any solar tax credit or rebate?
No major statewide solar incentive was found in 2026 sources — Wyoming's sales tax exemption for renewable equipment ended in 2012, so the 5% state sales tax applies.
Is the 30% federal solar tax credit still available?
Not for homeowner purchases anymore. The residential clean energy credit (26 U.S.C. § 25D) is not available for property placed in service after December 31, 2025, under the July 2025 tax law (Public Law 119-21). Systems installed by the end of 2025 can still claim 30%, and leased systems may still benefit because the leasing company claims the commercial credit instead. (Source: IRS — Residential Clean Energy Credit.)
Is solar worth it in Wyoming?
Verdict: marginal. The calculator puts a $200/month bill at a ~15.9-year payback with no federal credit — Wyoming's excellent sun (5.2 peak hours) fights a thin installer market, indicative $3.00–$3.63/W pricing, and zero state incentives. Monthly 1:1 net metering is the one strong tailwind, so size to annual use (January leftovers sell for ~1.4¢/kWh) and shop hard for quotes.
Figures last checked October 2026. Sources: EIA Electric Power Monthly, NREL PVWatts/NSRDB, DSIRE, Wyoming Public Service Commission; IRS — Residential Clean Energy Credit.
More US solar calculators
Compare other states: Texas, Florida, California, Arizona, North Carolina, South Dakota, Tennessee, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin. And the national US solar calculator for country averages.
Comparing quotes? The solar cost calculator breaks down cost per watt and the solar ROI calculator maps your payback year by year. Going deeper: installation cost guide, how net metering works, how much you can save with solar and the solar batteries guide.