10 kWh battery cost after the federal rebate
A 10 kWh usable home battery is the smallest of our three reference systems — enough for many households to cover a solid block of evening load without crossing into discounted federal rebate tiers. At current rates, tier-1 support is about $252 per usable kWh (verified 12 July 2026).
Typical installed price
Our planning figure for a turnkey 10 kWh battery is $9,000 before rebates. That assumes a straightforward retrofit beside existing solar, not a switchboard rebuild or three-phase special case.
Federal rebate and net cost
| Line | Amount |
|---|---|
| Typical installed (reference) | $9,000 |
| Federal rebate | $2,516 |
| Illustrative net | $6,484 |
| Net per usable kWh | $648 |
Federal support of $2,516 (68 STCs) brings the illustrative net to $6,484. Add any state scheme on your state stacking page.
Price per kWh versus other sizes
| System | Typical installed | Federal rebate | Net | Net $/usable kWh |
|---|---|---|---|---|
| 10 kWh battery | $9,000 | $2,516 | $6,484 | $648 |
| 13.5 kWh battery (Powerwall 3 class) | $14,000 | $3,367 | $10,633 | $788 |
| 30 kWh large system | $28,000 | $5,698 | $22,302 | $743 |
What drives quotes up or down
- Hybrid versus AC-coupled architecture and inverter brand
- Switchboard, metering, and cabling upgrades
- Multi-storey or restricted access installs
- Warranty length and round-trip efficiency
- Whether electrical works are bundled with new panels
Sources
Frequently asked questions
Is $9,000 a guaranteed price?
No. It is our reference typical installed cost for planning. Site access, inverter pairing, electrical upgrades and brand choice move real quotes.
Does a 10 kWh battery get the full federal tier?
Yes for usable capacity — 10 kWh sits inside the 0–14 kWh band that receives 100% of the current STC factor under the May 2026 rules.
Should I go bigger for more rebate?
Not automatically. Beyond 14 kWh usable, federal support per extra kWh falls. Size to evening load first.