Peak Sun Hours in Omaha, Nebraska, United States
- Solar zone
- Zone 3 (good)
- Best month
- July (6.5)
- Worst month
- December (1.7)
- Climate
- Temperate · 10.4°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 2.00 | 2.88 | 3.15 | 0.95 | -5.1 | 81 |
| Feb | 2.99 | 4.07 | 3.91 | 1.35 | -3.6 | 78 |
| Mar | 3.81 | 5.50 | 4.00 | 1.69 | 3.6 | 73 |
| Apr | 4.91 | 7.00 | 4.71 | 1.98 | 10.5 | 68 |
| May | 5.77 | 7.94 | 4.96 | 2.40 | 16.6 | 69 |
| Jun | 6.45 | 8.20 | 5.70 | 2.45 | 22.6 | 71 |
| Jul | 6.55 | 7.88 | 6.10 | 2.30 | 25.5 | 66 |
| Aug | 5.64 | 6.94 | 5.37 | 2.06 | 23.9 | 66 |
| Sep | 4.59 | 5.70 | 5.36 | 1.53 | 19.2 | 67 |
| Oct | 3.23 | 4.30 | 4.50 | 1.15 | 10.8 | 69 |
| Nov | 2.26 | 3.05 | 3.78 | 0.90 | 3.6 | 74 |
| Dec | 1.70 | 2.48 | 3.04 | 0.77 | -3.1 | 82 |
GHI, Clear-sky, DNI, DHI in kWh/m²/day. Data: NASA POWER climatology (long-term monthly averages).
Off-grid calculator
Add appliances
- Add an appliance to size a system.
Sizing
- Daily load
- 0.00 kWh
- Panel wattage
- 0 W
- Panel count (400W modules)
- 0
- Battery bank
- 0.0 kWh
Sizing against worst-month PSH of 1.70 kWh/m²/day, 0.77 system efficiency.
About solar in Omaha
Omaha, United States has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 4.16 kWh/m²/day, a good solar resource by global standards.
The strongest month in Omaha is July (summer) at 6.55 kWh/m²/day, and the weakest is December (winter) at 1.7 kWh/m²/day. When sizing a year-round off-grid system, it's standard practice to design against the December value rather than the annual average — otherwise the battery bank runs low during the darkest weeks.
Omaha's solar conditions are well within the range where off-grid PV is a straightforward engineering exercise with standard-sized arrays and lithium batteries.
FAQ
- What are the peak sun hours in Omaha?
- Omaha averages 4.16 peak sun hours per day annually, ranging from 1.7 in December to 6.55 in July.
- How many solar panels do I need in Omaha?
- Panel count depends on your daily load. At Omaha's annual average of 4.16 kWh/m²/day, a 5 kWh/day load needs roughly 4 × 400 W panels. Use the calculator above for your actual load.
- What size battery do I need in Omaha?
- Sizing against Omaha's worst month (December, 1.7 kWh/m²/day) with 2 days of autonomy at 80% depth of discharge, a 5 kWh/day load needs about a 12.5 kWh battery bank.
- How does Omaha's solar resource compare globally?
- Omaha sits in solar zone 3 out of 5 (where 5 is strongest) at 4.16 kWh/m²/day — good by global standards. For reference, top-tier desert sites average ~6.5 and high-latitude cities around 2.5 kWh/m²/day.
- How much does winter reduce solar output in Omaha?
- Omaha's worst month (December) delivers 1.7 kWh/m²/day — about 26% of the summer peak of 6.55. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Omaha's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Omaha's 4.16 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Omaha?
- At Omaha's latitude (41°), a fixed tilt near 41° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.