What Powerwall 3 is
Powerwall 3 is Tesla's integrated home solar-and-battery system. Each unit stores 13.5 kWh of usable energy and can deliver up to 11.5 kW of continuous AC power — enough to run heavy loads like air conditioning, well pumps, and induction cooktops. A single unit is sized to cover the essential loads of most homes; up to four Powerwalls and three expansion units can be stacked for larger backup needs.
Whole-home backup
Paired with a Tesla Gateway (or Backup Switch), Powerwall 3 automatically detects a grid outage and switches your home to battery power. Homeowners manage backup priorities, reserve levels, and energy modes from the Tesla mobile app.
Warranty
Powerwall 3 carries a 10-year limited warranty from Tesla. The full warranty document from Tesla defines coverage, capacity retention, and any exclusions, and controls in the event of any conflict with a summary shown in a proposal.
Frequently asked
How long is the Tesla Powerwall 3 warranty?
10 years, per Tesla's published warranty. Complete terms and conditions are provided by Tesla and control in the event of any conflict with a proposal summary.
How much can one Powerwall 3 back up?
One Powerwall 3 stores 13.5 kWh and can deliver up to 11.5 kW of continuous power. For most homes that covers essential loads (lighting, refrigeration, HVAC on a supported circuit). Multiple Powerwalls or expansion units can back up more of the home.
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