Washington Battery Incentives & Rebates in 2026

Phase 1

Where the Federal Tax Credit Actually Stands in 2026

The Section 25D Residential Clean Energy Credit, the 30% federal credit that made battery storage math work for over a decade, expired for any battery placed in service after December 31, 2025. This happened under the One Big Beautiful Bill Act, signed into law on July 4, 2025. If you buy a battery with cash or a loan in 2026, the IRS credit is zero. There was no phase-down and no extension. Understanding current Washington battery incentives now matters more than ever, since the Washington Department of Revenue sales tax exemption and utility rebates are the incentives actually left on the table.

There is one real exception. If you finance a battery through a lease or a power purchase agreement, the leasing company (not you) can still claim a comparable 30% credit under Section 48/48E through the end of 2027, and that savings is typically passed through as a lower monthly payment. It is a different ownership structure with real tradeoffs, but it is the one path where a federal incentive is still genuinely in play for battery storage in 2026.

Phase 2

Washington’s Sales Tax Exemption

Washington exempts qualifying solar energy systems from state and local sales and use tax under RCW 82.08.962. Under WAC 458-20-263(304)(a), that exemption extends to a battery storage system too, but only when the battery is designed and installed to be powered principally by a qualifying solar system. A standalone battery charged from the grid, without solar, does not qualify for the exemption.

• Pairing a new battery with solar keeps this exemption in play
• A grid-only battery, added without solar, is taxed at the normal rate
• We handle the paperwork either way so you know your real out-the-door price

Phase 3

Puget Sound Energy’s Flex Batteries Program

PSE customers have access to a real, current rebate: the Flex Batteries Program pays $1,000 per battery installed, plus $500 per year per battery for opting into grid-access participation. You keep a minimum 20% reserve at all times, so your battery still backs up your home during an outage. This is one of the more useful battery incentives left standing in Western Washington and it is worth asking about before you finalize a quote.

Phase 4

What About Other Western Washington Utilities?

Utility rebate programs vary and change. Snohomish PUD does not currently offer a battery storage rebate, though it does offer rebates for EV chargers and heat pumps. Seattle City Light does not currently have a dedicated battery rebate either. Because these programs shift year to year, we check current utility offers as part of every quote rather than relying on last year’s numbers.

Washington Battery Incentives FAQ

Is there still a federal tax credit for home batteries in 2026?

No, not for a cash or loan purchase. The 30% federal Section 25D credit expired for any battery placed in service after December 31, 2025. A battery lease or PPA can still pass through a comparable credit through 2027, since the financing company claims it under a different section of the tax code.

Does Washington still exempt batteries from sales tax?

Yes, but only when the battery is paired with and principally powered by a qualifying solar system. A standalone, grid-charged battery does not qualify for the exemption under current state rules.

Does PSE have a rebate for home batteries?

Yes. PSE’s Flex Batteries Program currently pays $1,000 per battery installed, plus $500 per year per battery for grid-access participation, while you keep a minimum 20% reserve for your own outage backup.

Does Snohomish PUD offer a battery rebate?

Not currently. Snohomish PUD offers rebates for EV chargers and heat pumps, but does not have a standing battery storage rebate as of 2026. We confirm current utility offers as part of every quote.

Should I still get a battery if the federal credit is gone?

For many homeowners, yes, especially if you’re already adding solar or want backup power during outages. The math is different without the 30% credit, so it’s worth getting a real, current quote that accounts for the state exemption and any utility rebates you qualify for, rather than assuming last year’s incentive numbers still apply.