Buy vs Lease a Home Battery in 2026
Short answer: Leasing does not hand you back the 30% credit. It changes who owns the system and how the price is written — so compare the full written term cost against buying the same size and scope, and get tax advice. Never sign on a monthly payment alone.
Planning estimate only — not a quote, not tax advice, not installation advice. Get a site-specific quote from a licensed installer, check your utility's rules, and speak to a tax professional before buying.
In 2026 the buy-vs-lease question changed, because the homeowner credit changed. Own the system and install it in 2026, and this site's maths uses $0 federal credit — full stop. A lease or PPA is a different animal: the research reports note that the surviving federal route for a 2026 homeowner system runs through the business §48E credit for lease/PPA systems, and any saving there depends entirely on how that contract is priced. Read that last part again. It is not a promise that leasing is cheaper. It is a warning to read the contract price, line by line.
| Buy (own) | Lease / PPA | |
|---|---|---|
| Upfront maths on this site | Installed cost roughly $12,000–$16,000 per 13.5 kWh unit (research range), $0 federal credit in 2026 | No general lease price is published here — lease saving depends on that specific contract |
| What to get in writing | Installer quote, warranty terms, panel work, programme eligibility | Full monthly/term price, escalation, term length, buyout, transfer on sale, maintenance, and what happens at term end |
| Tax question | Speak to a tax professional about your own circumstances | Speak to a tax professional — do not rely on a sales claim about §48E |
One lease example. Not a lease price.
The research reports cite one reported §48E lease case at ~$9,100 effective cost (NuWatt via the research). That is a single example, not a general lease price, and it is not applied automatically in the cost calculator — the calculator's lease checkbox deliberately calculates no lease saving. If a provider quotes you a lease, compare its full written term cost against the buy cost from your installer quote, on the same system size and backup scope.
Before you sign a lease, get these four answers
- What is the total amount I will pay over the full term, including escalation?
- Who owns the battery, who maintains it, and who claims any credit?
- What happens if I sell the house, if the battery fails, or if I want to buy it out?
- Is any programme payment (for example demand-response) included, shared, or kept by the provider?
Do not sign on the basis of a monthly payment alone, or on a claim that a lease "keeps the 30% credit" for you as a homeowner — get the contract and tax advice first.
Frequently asked questions
Does leasing bring back the 30% credit for me?
No — not as a homeowner credit. The research notes a business §48E route for lease/PPA systems, where any saving depends on contract pricing. Get the written contract and tax advice; do not accept a sales summary as tax advice.
Should I lease just because buying has $0 federal credit in 2026?
Not automatically. Compare the full lease term cost against a buy quote for the same size and scope, including warranty, maintenance, and transfer terms.
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