How much does a solar battery (Powerwall) cost?
Home solar battery installation runs $10,000 for a single 10–13 kWh unit, $16,000 for a typical Tesla Powerwall 3 install with backup gateway, and $28,000+ for stacked multi-battery whole-home backup systems.
Quick price points (2026)
| Scope | Cost | What it includes |
|---|---|---|
| Low | $10,000 | installed |
| Typical | $16,000 | installed |
| High | $28,000 | installed |
How to budget for this project
- Get 3 quotes
Get itemized quotes from at least three licensed contractors in your area.
- Adjust for your region
Compare the same scope and account for regional labor and permitting.
- Add 10–15% contingency
Hidden conditions, code upgrades and permit fees can increase the original quote.
- Plan the cash, not the financing
Build the replacement cost into the home's repair plan before the work becomes an emergency.