How Much Power Can a Tesla Powerwall Hold?

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Each Powerwall has 13.5 kWh (kilowatt-hours) of storage capacity.

13.5 kWh may seem like a lot at first!

However, on those hot summer nights, while you’re running your air-conditioner, it turns out that 13.5 kWh isn’t that much. The Powerwall most likely won’t power your house through the entire night since the average air conditioner uses around 1 kilowatt an hour (or more).

If your air conditioner isn’t running all night, 13.5 kWh could actually be enough to power your house until morning.

But keep in mind that you can connect up to 10 Powerwalls together to store more power.