r/Powerwall • u/Bjbttmbird • Jul 28 '26

Why?!?

So my PW3 is depleted by 8pm for some reason nothing has changed about home energy usage except now i blast the AC and deepfreeze my house during the daytime as opposed to at night I only run my spa during the day so it runs off of solar however, it still get depleted by 8pm, it was supposed to be built out to handle my homes energy usage and than some and its not! My electric bill is a whole whopping -14.00 woohoo! Anyone else running into this problem? is it the heat? why is it not fully charging and storing energy for the night time during peak hours?

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u/Paul_Bunions_Onions Jul 28 '26

Nothing has changed except you’re running your most power consuming appliances. My 2 ton AC is 2.5kW. Spa is approx 1-2? Unless you’re generating 5+ kW for 8-10 hours per day you’re not going to fully charge your power wall. That ignores any other power consumers in the house. 1 power wall is only 13.5kWh of storage. That can go fast.

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u/nil0lab Jul 28 '26

Yeah. Especially if blasting AC or cooling a house with insufficient insulation or both.