25-year savings projection for Wyoming
This projection starts from Wyoming's assumed $0.12/kWh electricity rate and 1,420 kWh/kW of annual production, then grows savings by 3% a year as electricity prices rise and reduces output by 0.5% a year as panels degrade.
| Year | Annual savings | Cumulative savings | vs. $23,200 cost |
|---|---|---|---|
| Year 1 | $1,123 | $1,123 | −$22,077 |
| Year 5 | $1,239 | $5,903 | −$17,297 |
| Year 10 | $1,401 | $12,576 | −$10,624 |
| Year 15 | $1,584 | $20,121 | −$3,079 |
| Year 20 | $1,791 | $28,650 | +$5,450 |
| Year 25 | $2,025 | $38,294 | +$15,094 |
A simple, undiscounted projection — it does not apply a discount rate, financing interest, inverter replacement (commonly needed once in 25 years), maintenance, or any change in home value. Treat it as a shape, not a forecast. See methodology.
Why savings look like this in Wyoming
Good sun and very low electricity prices — great for bills, slow for solar payback.
The single biggest variable is what your utility pays for exported power. Wyoming requires net metering for systems up to 25 kW with annual excess credited at avoided cost.
What would change this number
- Your actual rate. This uses a $0.12/kWh Wyoming average. If you pay more, savings scale up roughly proportionally.
- Self-consumption. We assume 68% of output is used on site at retail value and the rest exported at 45% of retail. Households home during the day, or with a battery, do better.
- Electricity price growth. At 3% a year, savings nearly double by year 25. Slower growth meaningfully reduces lifetime return.
- Incentives. Wyoming offers no significant state incentive, so the installed cost above is close to what you would actually pay. See Wyoming incentives →
- Financing. A cash purchase earns the return above. A loan shifts it — interest can consume a large share of lifetime savings.
Frequently asked questions
How much can you save with solar panels in Wyoming?
An 8 kW system in Wyoming could save roughly $1,123 in the first year — about $94 a month — and around $38,294 across 25 years, assuming electricity prices rise 3% a year and panel output declines 0.5% a year. Against a midpoint installed cost of $23,200, that is a net gain of about $15,094.
What is the ROI on solar panels in Wyoming?
On these assumptions, roughly 65% over a 25-year system life — $15,094 of net savings on a $23,200 system. That is a simple, undiscounted return: it ignores financing interest, the time value of money, and any effect on home resale value. A cash purchase and a loan produce very different numbers.
How long does it take for solar to pay for itself in Wyoming?
Around year 17, when cumulative savings first exceed the $23,200 installed cost. A simple payback that ignores rising electricity prices gives a wider range of 18–24 years.
Do solar savings in Wyoming include the federal tax credit?
No. The 30% federal residential clean energy credit (Section 25D) ended for systems installed after December 31, 2025, so none of these figures include it. Any savings projection you see elsewhere that still applies 30% to a 2026 purchase is overstating the return.
What most affects solar savings in Wyoming?
Three things, in order: your utility's export compensation (Wyoming requires net metering for systems up to 25 kW with annual excess credited at avoided cost.), how much of the output your household consumes on site rather than exporting, and your actual electricity rate versus the 0.12/kWh state assumption used here.
Where these numbers come from
State assumptions are informed by public data and reviewed periodically (September 2026):