Solar Panel Calculator for Cheyenne, WY
Estimate the cost, savings and payback of solar panels in Cheyenne, WY, using local NREL sunshine data, Wyoming prices and electricity rates.
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Cheyenne gets about 5.49 peak sun hours a day on a south-facing roof, so each kW of panels makes about 1,568 kWh a year. That ranks #34 of the 111 cities on this site. Output peaks in Jun and is lowest in Dec.
Sunshine in Cheyenne by month
What an 8 kW system makes in Cheyenne
| Month | Sun hours a day | Output | Bill savings |
|---|---|---|---|
| Jan | 3.75 | 792 kWh | $111 |
| Feb | 4.36 | 824 kWh | $115 |
| Mar | 5.71 | 1,152 kWh | $161 |
| Apr | 6.19 | 1,168 kWh | $164 |
| May | 6.81 | 1,288 kWh | $180 |
| Jun | 7.39 | 1,328 kWh | $186 |
| Jul | 6.79 | 1,224 kWh | $171 |
| Aug | 6.61 | 1,200 kWh | $168 |
| Sep | 6.18 | 1,128 kWh | $158 |
| Oct | 4.92 | 984 kWh | $138 |
| Nov | 3.85 | 768 kWh | $108 |
| Dec | 3.28 | 696 kWh | $98 |
| Year | 5.49 | 12,544 kWh | $1,757 |
Savings at 14.01¢ per kWh (Wyoming average), with every kWh credited at that price.
Cost and payback by system size
At $2.60 per watt, the Wyoming average, before incentives.
| System | Cost | Year 1 savings | Payback | 25-yr gain |
|---|---|---|---|---|
| 4 kW | $10,400 | $879 | 12.2 yrs | $10,299 |
| 6 kW | $15,600 | $1,318 | 12.2 yrs | $15,448 |
| 8 kW | $20,800 | $1,757 | 12.2 yrs | $20,598 |
| 10 kW | $26,000 | $2,197 | 12.2 yrs | $25,747 |
| 12 kW | $31,200 | $2,636 | 12.2 yrs | $30,896 |
How many panels you need in Cheyenne
| Monthly use | System | 400 W panels |
|---|---|---|
| 500 kWh | 3.83 kW | 10 |
| 750 kWh | 5.74 kW | 15 |
| 1,000 kWh | 7.65 kW | 20 |
| 1,500 kWh | 11.48 kW | 29 |
| 2,000 kWh | 15.31 kW | 39 |
Covering 100% of a year's use at 1,568 kWh per kW.
Common questions
Is solar worth it in Cheyenne?
At local averages an 8 kW system costs about $20,800 before incentives, saves about $1,757 in its first year and pays back in about 12.2 years.
How many peak sun hours does Cheyenne get?
About 5.49 a day over the year on a south-facing roof at 20°, from 3.3 in Dec to 7.4 in Jun, according to NREL's PVWatts model.
How much does a 1 kW solar system produce in Cheyenne?
About 1,568 kWh a year, or 131 kWh a month on average.
Is there a federal solar tax credit?
Not for homeowners who buy their system. The 30% Residential Clean Energy Credit ended for systems installed after December 31, 2025.
Sources
- NREL PVWatts V8 API (south-facing, 20° tilt, 14% losses, typical-year weather): https://developer.nlr.gov/docs/solar/pvwatts/v8/
- EnergySage, Solar panel cost by state (updated November 6, 2026): https://www.energysage.com/local-data/solar-panel-cost/
- U.S. EIA, Electric Power Monthly, Table 5.6.B (residential price, Jan–Aug 2026): https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=epmt_5_6_b