Peak sun hours in Nevada
Nevada averages 6.2 peak sun hours a day across the year, 3rd of the 50 states. At that figure a 400-watt panel produces about 1.91 kWh a day after real-world losses, and covering the 900 kWh average US bill takes about 16 panels. Las Vegas, the state's biggest city, runs slightly ahead of the statewide figure at 6.4 hours; treat 6.2 as the midpoint of a real spread rather than a local reading.
desert-grade sun: 6.2 of a possible ~6.5 hours
Panel counts for Nevada bills
Computed at Nevada's 6.2 hours with 400W panels and the 0.77 derate; the US-average column shows what the same bill takes at 4.5 hours, so you can see what your state's sun is worth in hardware.
| Monthly usage | Nevada | System size | US average |
|---|---|---|---|
| 500 kWh/mo | 9 panels | 3.6 kW | 12 panels |
| 750 kWh/mo | 13 panels | 5.2 kW | 18 panels |
| 900 kWh/mo | 16 panels | 6.4 kW | 22 panels |
| 1,000 kWh/mo | 18 panels | 7.2 kW | 24 panels |
| 1,500 kWh/mo | 26 panels | 10.4 kW | 36 panels |
| 2,000 kWh/mo | 35 panels | 14 kW | 48 panels |
What 6.2 hours means in practice
Nevada ranks 3rd of the 50 states for solar resource, and the number shows up directly in system size: the 900 kWh average bill needs 16 panels here against 22 for the country as a whole, 6 fewer panels doing the same job. Sun this strong (38% above the US average) also means heat, and heat is the quiet tax on desert solar: panels lose output as cells warm, which is part of why we derate rated watts by 23% before publishing any number. Even after that haircut, this is the cheapest sunlight in the country per panel installed.
How a Nevada year is shaped
The 6.2-hour figure is an annual average, and no month is average. These are the twelve monthly means for Nevada from NASA's 2001-2020 solar climatology, each as a share of the state's own annual mean, with that share applied to the 6.2-hour planning figure. June and December are marked.
| Month | Share of the annual average | Peak sun hours (est.) |
|---|---|---|
| January | 49% | 3.0 |
| February | 67% | 4.2 |
| March | 93% | 5.8 |
| April | 120% | 7.4 |
| May | 139% | 8.6 |
| June | 157% | 9.7 |
| July | 146% | 9.1 |
| August | 135% | 8.3 |
| September | 113% | 7.0 |
| October | 82% | 5.1 |
| November | 56% | 3.5 |
| December | 42% | 2.6 |
Nevada's curve tops out in June at 157% of the annual average and bottoms in December at 42%, a 3.8-to-one spread with 48% of the year's light landing in four months. In hours: 9.7 a day at the peak, about 2.6 in December. July gives some of it back, running 146% against June's 157%, which is cloud cover arriving with the heat rather than the sun weakening.
Half the Nevada calendar sits above the annual average and half below: April through September are the six months that beat it, carrying 67% of the year's light. April is already worth about 7.4 hours a day, so the productive half of the year starts earlier than most people expect.
Bills here run above the national line. The average Nevada household used 930 kWh a month in 2024 against 863 nationally, 8% more, and covering that across a year takes 17 panels at Nevada's sun. Covering it from December sun alone would take 39, 2.3 times the array, which is the number that decides whether a battery plan is realistic.
Nevada is one of the states where a statewide number does the most damage: it has the 6th widest internal spread of the fifty. Across the 20 grid cells sampled here the south runs 24% sunnier than the northeast. Held against the 6.2-hour statewide figure that is roughly 6.9 hours at one end and 5.5 at the other, which is the difference between two quite different quotes. Nobody should size a Nevada roof off the state average without checking which end of the state it sits on.
What that sun is worth on a Nevada bill
| EIA, 2024 residential averages | Nevada | United States |
|---|---|---|
| Average home's monthly use | 930 kWh | 863 kWh |
| Price per kilowatt-hour | 15¢ | 16.48¢ |
| Average monthly bill | $139.39 | $142.26 |
| One 400W panel, a year's output | 697 kWh | 506 kWh |
| What that output displaces | $105 | $83 |
At 15¢ a kilowatt-hour Nevada sits 9% below the national 16.48¢, 22nd of the fifty states on price. One 400-watt panel offsets roughly $105 of Nevada power a year. Mid-table on rates means the project lives or dies on the quote and the net-metering terms rather than on either the sun or the tariff.
Nevada ranks 3rd of fifty for sun but 9th for what a panel is worth, 6 places lower, because the power it displaces is cheap. Arizona gets more sun (6.5 hours to Nevada's 6.2) and pays 14.91¢ against 15¢, so one panel is worth about $4 less a year in Nevada than in Arizona.
Two warnings on those dollar figures. They are displaced electricity and nothing else: no install cost, no incentive, no financing, and no assumption about how your utility settles a surplus, which is the single biggest unknown in the sum. And a state average hides the utility you are actually on; 15¢ is every Nevada residential customer averaged together, and neighbouring territories can differ by more than the gap between two states in the ranking.
Getting a number for your address
For a location-exact figure, run your address through NREL's free PVWatts; it uses measured weather for your grid cell and will also model roof tilt and direction, which statewide numbers cannot. Then compare its annual kWh against a quote's promise before you sign anything.
Questions people ask
How many solar panels do I need in Nevada?
About 16 400-watt panels (6.4 kW) for the 900 kWh a month an average US home uses, at Nevada's 6.2 peak sun hours. For the average Nevada home specifically, which EIA measured at 930 kWh a month in 2024, it is 17. Your own bill is the variable that matters, and the calculator takes any figure.
Is 6.2 peak sun hours good for solar?
Yes, comfortably. Nevada ranks 3rd of the 50 states, 38% above the national average, which means fewer panels per kWh of bill than almost anywhere else in the country.
How much is one solar panel worth a year in Nevada?
About $105. One 400-watt panel at Nevada's 6.2 peak sun hours makes roughly 697 kWh a year after the 0.77 derate, and Nevada residential electricity averaged 15¢ a kilowatt-hour in 2024 (EIA), which puts Nevada 9th of the 50 states on this measure against 3rd on sunlight alone. That figure is displaced electricity only. It says nothing about install cost, incentives, or how your utility settles a surplus.
Do peak sun hours change with the seasons in Nevada?
Yes, by a factor of 3.8 here. NASA's 2001-2020 climatology puts Nevada's June at 157% of the annual average and December at 42%, so the 6.2-hour figure on this page is the midpoint of a curve running from roughly 9.7 hours a day down to 2.6. Grid-tied homes bank the summer surplus as credit; off-grid designs have to size for the trough, and in Nevada that means 39 panels for an average local bill instead of 17.