Assumes 3%/yr rate increases, 0.5%/yr panel degradation and no federal tax credit (the 30% §25D credit ended for systems installed after Dec 31, 2025). How we calculate
Data approachEIA rates · NREL sun hours · 2026 federal policy · methodology
A typical 8 kW solar system in Wyoming costs about $24,000 installed in 2026 (modeled at $3.00 per watt) and produces roughly 12,000 kWh a year. At Wyoming’s recent average residential rate of about 14¢/kWh, that saves about $1,460 in the first year, for a payback of about 14 years if electricity rates rise 3% a year, or about 17 years if they stay flat. Wyoming has no state solar tax credit, and the 30% federal homeowner credit ended for systems installed after December 31, 2025.
How we calculated this: 8 kW × 5.0 peak sun hours × 365 × 0.82 system efficiency ≈ 11,970 kWh a year. At 14.0¢/kWh and a 0.87 bill offset (the share of production that directly displaces purchased power), year-one savings ≈ 11,970 × 0.87 × $0.14 ≈ $1,460. Savings are then grown by an assumed 3% a year for rate increases and reduced 0.5% a year for panel degradation. The 14.0¢ rate is the EIA statewide residential average for the 12 months ending July 2026, against about 18¢ nationally (EIA). The $3.00/W price is our modeling assumption, inside the roughly $2.75 to $3.55/W range published for Wyoming in 2026, including EnergySage’s Wyoming data (about $3.55/W in April 2026). See our Wyoming data page and methodology page.
Wyoming has good solar resource but some of the lowest electricity rates in the country. Low rates, not weak sun, are why solar pays back more slowly here than in high-rate states like California.
Wyoming solar by system size
Wyoming solar by system size (model: $3.00/W, 5.0 sun hours, 14.0¢/kWh, 0.87 offset, 3% rate growth, 0.5% degradation, no federal or state credit)
System
Panels (400 W)
Annual output
Installed cost
Year-1 savings
Payback
25-yr net savings
6 kW
15
~8,980 kWh
$18,000
~$1,090
~14 years
~$19,300
7 kW
18
~10,480 kWh
$21,000
~$1,280
~14 years
~$22,500
8 kW
20
~11,970 kWh
$24,000
~$1,460
~14 years
~$25,700
10 kW
25
~14,970 kWh
$30,000
~$1,820
~14 years
~$32,100
These figures assume the system is sized to your usage. Oversizing lowers returns because annual surplus earns only the avoided-cost rate. Payback and net savings exclude inverter replacement, maintenance, financing costs and taxes.
Data visualization
Installed cost vs 25-year net savings by system size. An 8 kW system costs $24,000 and nets about $25,700 over 25 years at 3% yearly rate growth. Source: EIA 2026 residential rate; GreenEnergyCalc model.
Chart summary: Net savings exceed installed cost at every size shown, from $19,300 on a 6 kW system to $32,100 on a 10 kW system. Cost and savings scale together in this model, so payback stays near 14 years at every size; a larger system earns more dollars, not a faster return.
⚖️ Policy & Net Metering
How Does Net Metering Work in Wyoming?
Wyoming law requires utilities to offer net metering for systems up to 25 kW. Surplus power is credited on your next bill, and credits left at the start of each calendar year are bought back at the lower avoided-cost rate.
Rocky Mountain Power (part of PacifiCorp) serves most Wyoming homes, so its net metering tariff (Schedule 135, for systems up to 25 kW) is the starting point for most homeowners. Your solar production first offsets what you use; exported kWh become credits that appear on the following month’s bill and do not expire during the year. At the start of each calendar year, unused credits are purchased at the utility’s filed avoided-cost rate, which is roughly 3¢/kWh, far below the retail rate you pay. Black Hills Energy’s Wyoming tariff works the same way and lists a buyback rate of about 2.9¢/kWh as of its latest filing. Customers of MDU, municipal utilities and rural electric co-ops should confirm their own tariff terms, because they can differ.
Interconnection requires an application and technical review by your utility before you can export. Your installer normally handles the paperwork; ask for a realistic timeline in writing before signing.
Watch for rule changes. Wyoming lawmakers have considered net metering revisions in recent sessions. For example, Senate File 111 in 2025 would have directed the Public Service Commission to set new compensation for systems installed after January 2, 2026; the Senate rejected it 17 to 11. The statute remains in force, but ask your installer what protections your interconnection agreement gives you if the tariff changes.
Most Wyoming homes need about 6 to 9 kW (15 to 23 panels); each installed kW produces about 1,500 kWh a year at our 5.0 peak-sun-hour planning assumption.
A home using about 840 kWh a month (10,080 kWh a year), close to the typical Wyoming household’s use, needs roughly 6.7 kW: 10,080 ÷ (5.0 × 365 × 0.82). Homes with electric heat or an EV need more. Roofs facing south with a pitch roughly equal to your latitude (Wyoming spans about 41° to 45° N) suit the state well.
Production varies with location, shading and winter snow cover. Run your address through NREL PVWatts for a site-specific estimate; a half-hour difference in average sun changes an 8 kW system’s output by about 1,200 kWh a year.
Snow and wind loads are engineering requirements, not afterthoughts. Ask your installer what snow-load and wind-load ratings the racking carries and whether they match your county’s building requirements. Steeper roofs shed snow faster.
The savings calculator loads your state's average electricity rate, sun hours and net-metering rule. Then enter your own bill and installer quote.
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🏛️ Incentives
What Solar Incentives Are Left in Wyoming in 2026?
Very few for homeowners: Wyoming has no state solar income-tax credit or rebate program, and the 30% federal credit ended for systems installed after December 31, 2025.
Federal status. Until December 31, 2025, homeowners could claim 30% of system cost under §25D. The One Big Beautiful Bill Act (Public Law 119-21, signed July 4, 2025) ended it for expenditures made after that date (IRS FAQ). If your system was completed in 2025, claim it on your 2025 return with Form 5695; unused credit carries forward. The solar tax credit calculator explains what applies to your install date. This is not tax advice; confirm with a tax professional.
State status. Wyoming has no state income tax, so there is no state solar income-tax credit, and there is no statewide rebate program. Ask your installer, the Wyoming Department of Revenue and your county assessor about any sales-tax or property-tax treatment of solar equipment, since rules change and we have not modeled any.
Leases and PPAs. A third-party owner may still be able to claim a federal business credit (§48E) for qualifying solar projects that began construction by July 4, 2026 or are placed in service by December 31, 2027, and may pass some value into your price, but no specific discount is guaranteed. Lease and PPA availability in Wyoming is limited; compare any offer with the cash numbers above.
Ranches, farms and rural businesses. These have more options. USDA Rural Energy for America Program (REAP) grants can cover part of eligible project costs for agricultural producers and rural small businesses; funding rounds vary, so check with USDA Rural Development. Business-owned systems may also qualify for the federal business credits above. The July 4, 2026 begin-construction date has passed, so a new project generally needs to be placed in service by December 31, 2027. A tax professional should confirm eligibility.
📈 Payback Period
What Do Solar Panels Cost in Wyoming and When Do They Pay Back?
About $24,000 for a typical 8 kW system at a modeled $3.00/W, paying back in roughly 14 years if rates rise 3% a year, or about 17 years if rates stay flat.
Published Wyoming price estimates for 2026 run from about $2.75/W to $3.55/W, so a quote below our model shortens payback and a quote above it lengthens payback proportionally. At 14.0¢/kWh and about 11,970 kWh of annual production, year-one savings are about $1,460. Wyoming residential rates have risen faster than the 3% we assume in recent data (EIA shows roughly a 25% increase since 2019, with the latest 12 months up about 8%), but past increases do not guarantee future ones, so we show a flat-rate case too.
Data visualization
Cumulative net cash position of an 8 kW system, years 0 to 25. With 3% yearly rate growth the $24,000 cost is recovered in about year 14; with flat rates, about year 17. Source: EIA 2026 residential rate (14.0 cents/kWh); GreenEnergyCalc model.
Chart summary: The curve crosses $0 at about year 14 in the 3% rate-growth case and about year 17 with flat rates. By year 25 the system has avoided roughly $49,700 in electricity purchases at 3% growth, a net gain of about $25,700, or about $86 a month averaged over 25 years. Inverter replacement, maintenance and financing costs are not included.
Future electricity prices drive the result more than any other input we model, so the next chart isolates rate growth.
Data visualization
25-year net savings of an 8 kW system by yearly rate growth. Net savings range from about $10,300 at 0% growth to about $40,700 at 5%. Source: EIA 2026 residential rate; GreenEnergyCalc model with 0.5% yearly panel degradation.
Chart summary: Flat rates stretch payback to about 17 years and cut 25-year net savings to about $10,300; 5% yearly growth pulls payback to about 13 years and lifts net savings to about $40,700. Installed price works the same way: every $0.25/W off your quote shortens payback by roughly a year in this model.
Financing. Solar loans commonly run 6% to 9% over 10 to 20 years. Without the federal credit, a 20-year loan at 7% on $24,000 costs about $186 a month, well above the roughly $120 a month the system saves in year one (savings grow over time as rates rise). In Wyoming, solar generally makes the most financial sense as a cash purchase or with a substantial down payment.
Batteries. Because net metering already credits most of your production, a home battery in Wyoming is mainly about backup power during outages, not bill savings. The federal credit for home batteries (§25D) ended along with the solar credit for 2026 installs, so get firm quotes and compare them with the value you place on resilience. The battery storage calculator can compare options for your usage.
Before committing, run your own numbers in the solar payback calculator using your actual bill and a real quote.
Solar vs utility company · 25-year comparison
25-year totals: 3%/yr rate increases, 0.5%/yr degradation, no federal credit. Methodology
Electricity prices: U.S. Energy Information Administration, residential average price, 12 months ending July 2026 (EIA Electric Power Monthly).
Net metering: Wyoming net metering statute (Wyo. Stat. § 37-16-101 et seq.); Rocky Mountain Power Schedules 135 and 37; Black Hills Energy Wyoming net metering tariff. Confirm current terms with your utility.
Usually only as a long-term cash purchase. A modeled 8 kW system costs about $24,000, saves about $1,460 in year one, and pays back in roughly 14 years if rates rise 3% a year (about 17 years if rates stay flat). Wyoming's low electricity rates and the end of the 30% federal credit are why payback is slow.
Published 2026 estimates range from about $2.75 to $3.55 per watt before incentives; we model $3.00 per watt. That puts a 6 kW system near $18,000 and an 8 kW system near $24,000. Get at least three quotes, since price per watt varies by installer, roof and snow-load requirements.
Yes. Wyoming law requires utilities to offer net metering for systems up to 25 kW. Surplus kWh are credited on your next bill, and credits left at the start of each calendar year are bought back at the utility's avoided cost, roughly 3¢ per kWh. Co-op and municipal terms vary, so confirm your utility's tariff.
No. Wyoming has no state income tax, so no state solar tax credit, and the 30% federal homeowner credit (§25D) ended for systems installed after December 31, 2025. Farms and businesses may still qualify for USDA REAP grants or federal business credits. This is not tax advice; confirm with a tax professional.
A home using about 840 kWh a month (10,080 kWh a year) needs roughly 6.7 kW, or about 17 panels at 400 W, using 5.0 peak sun hours and 82% system efficiency: 10,080 ÷ (5.0 × 365 × 0.82). A typical 8 kW system (20 panels) produces about 12,000 kWh a year. Shading, roof pitch and snow affect the final design.
Wyoming solar by electric bill
See system size and payback for common monthly bills in Wyoming.
13.95¢/kWh — Wyoming average residential price. Source: EIA Electric Power Monthly, Table 5.6.B (year-to-date through July 2026), residential average retail price (July 2026) (EIA)
Solar production
5 peak sun hours/day × 0.82 system derate. Approximate state-average daily solar resource (peak sun hours) based on NREL solar resource data (NSRDB); not location-specific — use NREL PVWatts for an address-level estimate. (NREL PVWatts)
Installed price
$3.00 per watt before incentives. Blended 2026 US residential installed price used by this site; EnergySage marketplace reported about $2.60/W (mid-2026); full-market medians are higher.
Federal tax credit
$0 for homeowner-owned systems installed in 2026 — the 30% §25D credit ended Dec 31, 2025 (IRS)
Net metering
Full retail net metering — solar assumed to offset 87% of the bill. Wyoming requires net metering up to 25 kW; excess is credited at avoided cost.
Estimates only — not tax, legal or financial advice. Get at least three installer quotes and confirm incentives with your utility and a tax professional.