Appliance
How many solar panels to run a CPAP?
A CPAP uses about 449 Wh a day. At the U.S. average of 4.98 sun hours that takes about 120 W of panels and a 0.55 kWh battery for one day.
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| Value | |
|---|---|
| Model used | ResMed AirSense 11, typical power from the user guide |
| Daily energy | 449 Wh |
| Basis | 56.1 W × 8 h/day (assumed use) |
| Panel watts (U.S. avg) | 120 W |
| Battery, 1 day | 0.55 kWh |
| Source | manufacturer / ENERGY STAR |
By state
| State | Panel watts |
|---|---|
| Arizona | 92 W |
| Colorado | 106 W |
| Wyoming | 112 W |
| Idaho | 115 W |
| Missouri | 119 W |
| South Dakota | 123 W |
| Montana | 126 W |
| New Jersey | 128 W |
| Maine | 132 W |
| Michigan | 134 W |
| Alaska | 189 W |
Questions
How many solar panels to run a CPAP?
A CPAP uses about 449 Wh a day. At the U.S. average of 4.98 sun hours that takes about 120 W of panels and a 0.55 kWh battery for one day.
Where does the daily energy come from?
56.1 W × 8 h/day (assumed use). Americas user guide, 65 W power supply section: typical power consumption 56.1 W (111.5 VA) and peak power consumption 73.2 W (137.6 VA). This is the published system figure, not the lower no-humidifier row on ResMed's separate therapy-power sheet.