Solar Panel Calculator for Las Vegas, NV
Estimate the cost, savings and payback of solar panels in Las Vegas, NV, using local NREL sunshine data, Nevada prices and electricity rates.
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Las Vegas gets about 6.54 peak sun hours a day on a south-facing roof, so each kW of panels makes about 1,794 kWh a year. That ranks #2 of the 111 cities on this site. Output peaks in Jun and is lowest in Jan.
Sunshine in Las Vegas by month
What an 8 kW system makes in Las Vegas
| Month | Sun hours a day | Output | Bill savings |
|---|---|---|---|
| Jan | 4.34 | 872 kWh | $116 |
| Feb | 5.34 | 952 kWh | $127 |
| Mar | 6.70 | 1,280 kWh | $171 |
| Apr | 7.58 | 1,384 kWh | $185 |
| May | 8.02 | 1,448 kWh | $193 |
| Jun | 8.34 | 1,440 kWh | $192 |
| Jul | 7.66 | 1,336 kWh | $178 |
| Aug | 7.43 | 1,312 kWh | $175 |
| Sep | 7.32 | 1,280 kWh | $171 |
| Oct | 6.20 | 1,160 kWh | $155 |
| Nov | 5.08 | 968 kWh | $129 |
| Dec | 4.54 | 920 kWh | $123 |
| Year | 6.54 | 14,352 kWh | $1,917 |
Savings at 13.36¢ per kWh (Nevada average), with every kWh credited at that price.
Cost and payback by system size
At $2.35 per watt, the Nevada average, before incentives.
| System | Cost | Year 1 savings | Payback | 25-yr gain |
|---|---|---|---|---|
| 4 kW | $9,400 | $959 | 10.0 yrs | $13,183 |
| 6 kW | $14,100 | $1,438 | 10.0 yrs | $19,775 |
| 8 kW | $18,800 | $1,917 | 10.0 yrs | $26,367 |
| 10 kW | $23,500 | $2,397 | 10.0 yrs | $32,959 |
| 12 kW | $28,200 | $2,876 | 10.0 yrs | $39,550 |
How many panels you need in Las Vegas
| Monthly use | System | 400 W panels |
|---|---|---|
| 500 kWh | 3.34 kW | 9 |
| 750 kWh | 5.02 kW | 13 |
| 1,000 kWh | 6.69 kW | 17 |
| 1,500 kWh | 10.03 kW | 26 |
| 2,000 kWh | 13.38 kW | 34 |
Covering 100% of a year's use at 1,794 kWh per kW.
Common questions
Is solar worth it in Las Vegas?
At local averages an 8 kW system costs about $18,800 before incentives, saves about $1,917 in its first year and pays back in about 10.0 years.
How many peak sun hours does Las Vegas get?
About 6.54 a day over the year on a south-facing roof at 20°, from 4.3 in Jan to 8.3 in Jun, according to NREL's PVWatts model.
How much does a 1 kW solar system produce in Las Vegas?
About 1,794 kWh a year, or 150 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