Battery storage tax credit guide
The federal government will pay 30% of your home battery installation. Not a rebate you have to apply for, not a lottery, not income-limited — a direct credit on your tax return that reduces what you owe the IRS dollar for dollar. And since 2023, you don’t need solar. A battery that charges from the grid qualifies.
That second part is the thing most articles about this topic miss entirely. Before 2023, the battery had to be charged exclusively by solar to qualify for any federal credit. The Inflation Reduction Act changed that. Grid-connected battery storage now qualifies on its own merits.
Disclaimer: ShelterVolt is a system design guide, not a CPA firm. The rules described here are accurate as of publication, but tax law is complex and your specific situation matters. Consult a tax professional before filing. That said, this guide won’t hide behind a disclaimer to avoid giving you concrete information.
The core credit: 30% through 2032
The Residential Clean Energy Credit lives in IRS Form 5695, Part I. For qualifying battery storage installed between 2022 and 2032, the credit equals 30% of the total installed cost — hardware, inverter, and installation combined.
The credit is non-refundable. That means it reduces your tax liability to zero, but the IRS won’t cut you a check for the remainder if the credit exceeds what you owe. It does carry forward, though. If you have $4,500 in credit but only $3,000 in tax liability this year, the remaining $1,500 rolls to next year automatically.
The schedule:
- 2022–2032: 30%
- 2033: 26%
- 2034: 22%
Install this year. The math is better.
The 3kWh minimum rule
To qualify as “battery storage technology” under IRS rules, the battery must have a nameplate capacity of at least 3 kilowatt-hours. This is a hard cutoff. A 2.9kWh battery does not qualify. There is no partial credit. No exceptions.
In practice, this rule eliminates almost nothing in the residential market. Every serious home backup battery far exceeds 3kWh. The rule exists to exclude small, single-purpose batteries — think UPS units and small portable power stations — from the credit.
The whole house battery backup systems that people actually buy for home backup all qualify:
- Tesla Powerwall 3: 13.5kWh
- EcoFlow Delta Pro Ultra: 6kWh per unit (expandable)
- Enphase IQ 5P: 5kWh per unit (stackable)
- FranklinWH aPower: 13.6kWh
If you’re looking at a smaller portable unit to bridge you through a short outage, check the specs carefully. Some units marketed as “solar generators” sit below 3kWh. The credit doesn’t apply to those. See the solar generator for home backup guide for a breakdown of which portable units hit the threshold and which don’t.
The standalone battery change (the part that matters most)
This is worth dwelling on because it represents a real shift from how the credit worked before.
Before January 1, 2023, battery storage could only qualify for the federal credit if it was charged exclusively by solar panels. Grid charging disqualified it entirely. That rule made battery-only installs financially unattractive for anyone without existing solar.
The IRA eliminated the solar requirement. As of January 1, 2023, a battery that charges from the grid — with no solar at all — qualifies for the full 30% credit. You can install a Tesla Powerwall 3, connect it to grid power, configure it to charge overnight when rates are cheapest, and still claim the credit on your taxes.
This matters for several categories of homeowner:
- Those who want backup power but aren’t ready to commit to solar
- Those in HOA communities where rooftop solar is restricted
- Those in shaded lots where solar ROI is marginal
- Those who want to buy battery first and add solar later
The credit applies regardless of how you use the battery after installation.
What costs the credit covers
The 30% applies to the total installed cost, not just hardware. That includes:
- Battery hardware
- Inverter (if purchased separately — many integrated systems include it)
- Licensed electrician labor
- Permits and inspection fees
- Wiring and conduit materials
- Any load center upgrades required for the installation
Keep your contractor’s invoice. It should itemize hardware and labor separately, though both are eligible. If your electrician handles permitting, those fees are eligible too.
What doesn’t count: extended warranties, monitoring subscriptions, or any financing charges if you financed the system.
What does NOT qualify
No fossil-fuel backup system qualifies for any federal clean energy credit. Period.
- Gasoline portable generators: no credit
- Whole-house propane standby generators: no credit
- Natural gas standby generators: no credit
- Diesel generators: no credit
A Generac 22kW propane unit costs $15,000 installed. Zero federal credit. A FranklinWH 13.6kWh battery system at $12,000 installed: $3,600 back. The cost differential looks different once you factor that in.
How to claim it: Form 5695
Filing is straightforward. You don’t need to attach anything to your return beyond the form itself — but you do need to have documentation ready if the IRS ever asks.
Step 1: Complete IRS Form 5695, Part I (Residential Clean Energy Credit). Line 5b is specifically for “battery storage technology.” Enter your qualified expenses there.
Step 2: The credit flows from Form 5695 to Schedule 3, Line 5, then to Form 1040. Your tax software handles this automatically — TurboTax, H&R Block, and FreeTaxUSA all support it. You’re not doing this by hand.
Step 3: If the credit exceeds your liability for the year, the carryforward amount gets entered on Schedule 3, Line 5 in the following year.
A concrete example: you spend $15,000 on a Tesla Powerwall 3 — hardware and installation combined. The 30% credit equals $4,500. If you owe $6,000 in federal taxes, your bill drops to $1,500. If you owe $3,500, the credit reduces your bill to zero and carries forward $1,000.
Documentation to keep
You don’t file these with your return, but you need them on hand:
-
Manufacturer certificate of eligibility. Tesla, Enphase, EcoFlow, and FranklinWH all provide these. Download it from the manufacturer’s support portal and save it in a file you won’t lose.
-
Itemized contractor invoice. Should show hardware cost and labor cost separately, plus any permit fees. Ask for this explicitly if your contractor’s standard invoice doesn’t break it out.
-
Permit records. The issued permit and inspection sign-off from your local jurisdiction.
If you’re audited, you want to show that the equipment was installed and operational in the tax year you claimed the credit. Permit records are the cleanest documentation for this.
State programs worth knowing
The federal 30% is the floor. Many states add their own incentives on top, and the math changes significantly in some markets.
California SGIP (Self-Generation Incentive Program). This is the big one. SGIP pays rebates of $150 to $1,000+ per kWh of storage capacity, depending on income tier and project type. General Market Tier runs around $200/kWh. Equity tiers pay more. Applications go through CPUC-approved incentive providers. There are waitlists — apply early, before installation if possible.
Maryland. Maryland offers a state income tax credit equal to 30% of installed cost, up to $5,000. You can stack this directly on top of the federal 30%. That’s up to 60% of your total cost covered between the two.
Massachusetts SMART. A solar-plus-storage program offering 10-year tariff payments for battery systems paired with solar. If you’re installing both, this is worth calculating carefully.
New York. Con Edison and PSEG LI both run battery incentive programs through their demand response enrollment. The structure is different from a direct rebate — you earn payments for making your battery available to the grid during peak events.
For every other state, use DSIRE: dsireusa.org. The Database of State Incentives for Renewables and Efficiency maintains current program listings with eligibility rules and contact information. It’s maintained by N.C. State and funded by the Department of Energy. It’s the authoritative source.
Combined incentive example: California Powerwall install
Here’s what the math looks like for a real scenario:
A homeowner installs a single Tesla Powerwall 3 (13.5kWh) in California. Total installed cost: $15,000.
| Incentive | Calculation | Amount |
|---|---|---|
| Federal 30% credit (Form 5695) | 30% x $15,000 | -$4,500 |
| California SGIP (General Market) | ~$200/kWh x 13.5kWh | -$2,700 |
| Net cost after incentives | $7,800 |
$7,800 for a 13.5kWh whole-home battery system that lasts 10+ years and qualifies for utility backup rates. That changes the calculus significantly versus a $10,000 propane standby generator with no credit, ongoing fuel costs, and annual maintenance bills.
The SVG calculation chart below shows this visually.
A note on the credit and business use
If your home doubles as a home office or rental property, the credit calculation gets more complex. The credit applies only to the portion of the system used for personal residential purposes. If you rent out a room or use a significant percentage of your home for business, you may need to prorate the eligible costs. This is where the “consult a tax professional” guidance has real teeth.
The year to install is this year
The 30% rate holds through 2032. But state programs change, waitlists grow, and installer capacity is tighter in some markets than others. California’s SGIP has closed and reopened multiple times as funding runs out. Maryland has proposed extending their credit past the current cap. None of these programs are guaranteed to be available in their current form next year.
The credit makes home battery storage significantly more affordable — but only if you size the system correctly for your loads. Before calling for quotes: home generator sizing calculator.