State
How much solar do I need in Oregon?
Oregon averages 4.06 peak sun hours a day, so 1 kW of panels makes about 1,121 kWh a year. A home using 10 kWh a day needs about 3,284 W of panels.
| Daily use | Panel watts | 400 W panels | Battery for 1 day |
|---|---|---|---|
| 5 kWh/day | 1,642 W | 5 | 6.17 kWh |
| 10 kWh/day | 3,284 W | 9 | 12.35 kWh |
| 20 kWh/day | 6,568 W | 17 | 24.69 kWh |
| 30 kWh/day | 9,852 W | 25 | 37.04 kWh |
Peak sun hours: 4.06; annual output 1,121 kWh per kW. Source: state table derived from NREL PVWatts v8; check your exact address in NREL PVWatts.
Questions
How many peak sun hours does Oregon get?
4.06 kWh/m²/day on average, from NREL PVWatts v8 data.
How many solar panels for a house in Oregon?
Oregon averages 4.06 peak sun hours a day, so 1 kW of panels makes about 1,121 kWh a year. A home using 10 kWh a day needs about 3,284 W of panels.