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That won’t get you all the way through the night, every night. At least not with anything close to typical household energy use in the US. For that you need a
by sunshinesnacks 3y ago
That won’t get you all the way through the night, every night. At least not with anything close to typical household energy use in the US.
For that you need a properly sized off grid system, which can easily be 20-30 kW of solar and 50-150 kWh of batteries. Enough to get you through 50-10 cloudy days (depending on your location) with less than 1 kWh per day per kW from solar and 40-60 kWh per day of electricity use.
- 10u152 3y agoThat’s so wild to me. I have a modest 6.6kw solar system in Australia and average 4kwh a day bought from the grid. No battery, no gas, live in a hot climate and run the A/C about 8 months a year.
- hparadiz 3y agoI have a 12kw system in Southern California. Recently it's been raining and overcast many days so I've had a shortage. Only in the winter though. I'm usually running a surplus.
- sunshinesnacks 3y agoHow many square feet (or meters) are air conditioned? And you mentioned average daily purchases from the grid, but do you know what the maximum is? In the US, I think the "pinch point" for off-grid systems is usually in the winter for an all-electric home. Shorter days and more likely to have multiple fully cloudy days in a row, at least for a lot of the US.
- 10u152 3y agoJust under 100m2 are air conditioned. Largest day on record was importing 23 kWh due to almost no sun, and me choosing to spend the day bulk cooking/catching up on washing. In a grid down/no sun situation I wouldn’t be doing bulk cooking and washing.