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Forum: Does Charge from Grid fill 2x Powerwall 2 to 100% nightly?

📍 Reddit Powerwall

Unconfirmed: a user in Texas with 2x Powerwall 2 (installed in 2020) and about 17 kW of solar is evaluating a plan with free electricity from 9pm to 6am and about 24¢/kWh the rest of the day. The median daytime grid draw is 9.8 kWh, and the poster estimates about 20 kWh usable above a 25% backup reserve. The central question is whether, with Time-Based Control and Charge from Grid, the system reliably fills both Powerwalls to 100% overnight. The post is a user question; it includes no official Tesla response and no confirmation of how the software behaves.

🔎 Why it matters: Unconfirmed: there is no official confirmation. The poster asks whether Time-Based Control with Charge from Grid fills both Powerwall 2 units to 100% every night, which they say they cannot verify from the documentation. According to the poster, the plan only pays off if that ove
📈 Upside: According to the poster, ~20 kWh usable against a median 9.8 kWh of daytime grid draw looks comfortable on paper.
📉 Risk: If the overnight charge does not reach 100%, the ~20 kWh margin the poster calculates shrinks compared with their estimate.
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