Do Solar Panels Increase Your Property Taxes?

Usually not — but only because your state almost certainly has a law that says so. Solar panels do add real market value to a home, and in the small number of states without a solar property tax exemption, that added value can raise your assessment and your tax bill. In the large majority of states, a specific exemption or exclusion removes some or all of that added value from what your assessor is allowed to tax.

The catch is that "most states have an exemption" hides a lot of variation. Some exemptions are full, some are partial. Some are permanent, some expire. Some apply automatically, and some require you to file paperwork by a specific deadline or lose the benefit entirely. This post walks through how solar interacts with property tax assessments, exactly which states we could verify an exemption for and what kind, and what to do if your bill went up anyway.

How Solar Interacts With Your Property Tax Assessment

Property tax is based on your home's assessed value, which is supposed to track its market value. A rooftop solar system is a real improvement — it typically increases what a home would sell for, the same way a renovated kitchen or a finished basement does. Left alone, an assessor who discovers a solar installation (often through the permit filed for the electrical work) would fold that added value into your next assessment, the same way they would for any other improvement.

Solar property tax exemptions are a deliberate policy override of that default. A state legislature decides that taxing the added value of a home energy investment discourages the behavior it's trying to encourage, so it passes a law instructing assessors to exclude some or all of that value from the tax roll. The exemption doesn't change what the system is worth — it changes what your assessor is allowed to count.

That means two things can both be true at once: your home is worth more with solar, and your tax bill doesn't reflect it. It also means the exemption is a statute, not a natural law — its scope, duration, and paperwork requirements are whatever your state legislature wrote, and they vary a lot.

1. The State-by-State Patchwork: Where Solar Is (and Isn't) Exempt

This is not a complete 50-state list. We only included a state below if we could verify its current rule against a state statute, state agency, or county assessor source, linked inline. Confirm the current rule with your own county assessor or state revenue department before assuming any of this applies to you — these laws change, legislatures amend them, and some are actively sunsetting. All information below was checked in July 2026.

Sources for the table above, so you can check any row yourself: Florida — Fla. Stat. §193.624 (residential exclusion is in subsection (2)(a); note §196.182 is the separate tangible-personal-property exemption). Texas — Tex. Tax Code §11.27, with leased-system treatment per Travis CAD. Arizona — A.R.S. §42-11054. South Carolina — S.C. Code §12-37-220. New Jersey — NJ Division of Taxation. Wisconsin — Wis. Stat. §70.111(18). North Carolina — N.C.G.S. §105-275. Iowa — Lincoln Institute incentive record. Massachusetts — M.G.L. Ch. 59 §5. New York — NYSERDA on RPTL §487. New Hampshire — RSA 72:62. Colorado — C.R.S. §39-3-102. Oregon — ORS 307.175. California — California BOE, new construction.

A note on Indiana, and why it's not in the table. Indiana's renewable-energy property tax deductions have been the subject of recent legislative change, and several secondary sources describe them as narrowing or phasing out. We could not confirm the current status against Indiana's own statute text, so we've left Indiana out rather than publish a rule we couldn't verify. That is worth taking as a general warning: solar property tax rules change often, and an article describing your state's exemption — including this one — can go stale. Confirm with your county auditor or assessor before relying on it.

The four distinctions that actually matter

Full vs. partial exemption. Most states on this list exempt 100% of the added value. North Carolina is a notable exception at 80% — meaning a fifth of the added value from a residential solar-electric system can still land on your assessment.

Permanent vs. time-limited. New York's exemption runs 15 years from installation, Massachusetts's runs 20, and Iowa's runs 5 — after which the added value can be taxed. California's new-construction exclusion currently only protects systems completed before January 1, 2027, under existing law, though systems that qualify before that date keep the exclusion until a change in ownership. Oregon's statute has a standing sunset clause. None of these numbers are guaranteed to stay put — legislatures extend, shrink, and let these provisions lapse.

Statewide vs. local-option. New Hampshire's exemption only exists in the roughly 150 municipalities that have voted to adopt it — it is not automatic just because you live in the state. New York flips this: the exemption applies everywhere by default, but individual municipalities can opt out.

Residential-only vs. all property. Colorado's exemption is explicitly residential and capped at 100kW. Florida, New Jersey, and Wisconsin extend exemptions to commercial and industrial property too, sometimes at different percentages.

What the difference is worth, in example numbers

These figures are illustrative only — not real data for any specific state, county, or system — but they show why the distinctions above matter. Say a solar installation adds an estimated $20,000 in market value to a home, and the local effective property tax rate is 1.5%. With a full, permanent exemption, none of that $20,000 is added to the assessment, so the added-value tax impact is roughly $0 per year, for as long as the exemption lasts. With an 80% exemption like North Carolina's, roughly $4,000 of that value could remain in the taxable base, or about $60/year at that example rate. With a 15-year exemption like New York's, the $0 impact holds for 15 years and then, absent a change in law, the added value could become taxable in year 16. Your actual numbers depend on your system's real cost, your local rate, and your assessor's methodology — this is only meant to show the shape of the impact, not a forecast.

2. "Automatic" Is Often a Myth — Check Whether You Have to Apply

The single most common way homeowners lose a solar property tax exemption they're legally entitled to is never filing for it. A meaningful number of states put the burden on the homeowner, and the deadlines are unforgiving — miss them and you typically wait for the next tax cycle.

States that require you to file something

• Texas: Form 50-123, filed with your county appraisal district, generally by April 30 of the relevant tax year, per Texas Tax Code §11.27.
• New Jersey: Form CRES, filed with your municipal tax assessor within 30 days of receiving Permission to Operate, per the NJ Division of Taxation.
• Wisconsin: Form PR-303, filed with your local assessor by March 1, per Wis. Stat. §70.111(18).
• New Hampshire: Form PA-29, filed with your local selectmen or assessors by April 15 following installation — and only relevant if your town adopted the exemption in the first place, per RSA 72:61–62.
• Iowa: an application to your local assessor to start the 5-year exemption clock, per Iowa Code §441.21(8).
• Massachusetts: certification from the Department of Energy Resources plus recognition by your local Board of Assessors under M.G.L. Ch. 59, §5, Cl. 45.

States where it's generally self-executing

Florida, Arizona, South Carolina, North Carolina, and Colorado are structured so the exemption applies without a separate homeowner filing. That doesn't mean it's foolproof — an assessor can still miss the exemption on a specific parcel, and some, like Arizona, still expect you to have cost and installation documentation ready if the county asks for it. "Automatic" means you shouldn't have to apply, not that you should skip checking your notice.

If your state isn't on either list

Assume you need to file something. Search your county assessor's or state revenue department's website for "solar" or "renewable energy exemption," find the correct form, and confirm the deadline before it passes. Installers sometimes mention the exemption exists; they rarely walk you through the paperwork.

3. Leased Panels and PPAs Don't Always Get the Same Treatment

If you didn't buy your system outright — you're leasing it, or you're on a power purchase agreement (PPA) where a solar company owns the equipment and sells you the electricity — the exemption rules can work differently, and this is one of the most common points of confusion for homeowners.

How ownership drives eligibility

In Texas, for example, Travis Central Appraisal District is explicit: leased systems do not qualify for the homeowner exemption under Tax Code §11.27, because the exemption is tied to who owns the equipment, not just where it sits. Several other states write their exemption statutes the same way — around the owner of the device, not the owner of the roof it's bolted to.

What happens to the leased system's value instead

That doesn't automatically mean you pay more. In Texas, the appraisal district treats a leased system as the leasing company's personal property, separate from your house, so it generally shouldn't inflate your real property tax bill at all — the mechanism is different from an exemption, but the practical outcome (you don't pay more) can end up similar. Other states are less clear about which bucket a leased system falls into. Don't take a leasing company's marketing claim about property taxes at face value — ask your own assessor how a leased or PPA-financed system on your property is actually classified: taxable real property, excluded added value, or separately assessed personal property belonging to someone else.

4. Battery Storage Is the Newest Gray Area

Home battery systems — paired with solar or standalone — are newer than most of these statutes, and the law hasn't caught up uniformly.

Where storage is explicitly addressed

South Carolina's exemption for systems up to 20kW AC generally extends to inverters and batteries paired with solar. Massachusetts added energy storage systems to its exemption in 2021 as part of a broader clean-energy property tax reform. New York's exemption under RPTL §487 generally requires the battery to be functionally connected to the solar system as part of one unified system — a standalone battery installed without solar is treated differently and may not qualify at all.

Where it's simply silent

In several states, the statute doesn't mention storage one way or the other, which leaves it to local assessors to decide whether a battery counts as part of an exempt "solar energy system" or as separately taxable equipment. If you're adding storage — whether at the same time as solar or afterward — ask your assessor specifically about the battery. Don't assume your existing solar exemption automatically extends to it.

5. How to Check Whether Your Assessor Actually Applied the Exemption

Don't assume the exemption "just happened" once your system passed inspection. Confirm it directly.

Pull the record and compare the numbers

Most county assessors publish property record cards online. Look for a line item or note referencing the solar installation and whether it's excluded from assessed value, and compare your assessed value from before and after installation. If it jumped by roughly what the system cost, or what your installer estimated it adds in resale value, the exemption may not have been applied.

Call and ask by statute number

Call the assessor's office and ask directly whether the exemption under your state's specific statute was applied — citing the section number signals you've done your homework and tends to get a faster, more specific answer than a general question. Ask, too, whether any application or certification is still outstanding on your end.

Check whether you're past a deadline

If your state requires an application and you're past the filing deadline, ask whether it can still be applied retroactively or whether you have to wait for the next cycle. Policies here vary by county even within the same state.

6. What to Do If Your Assessment Jumped Anyway

If you've confirmed the exemption should apply and your assessment still went up, treat it as a correctable error, not a final answer.

Document and ask for a correction first

Request the appraisal detail or property record card showing how the increase was calculated, and ask specifically whether the solar equipment's value is included. Provide your installation documentation — permit, final invoice, interconnection or Permission to Operate date — and ask the assessor's office to correct the record informally. This resolves a lot of cases without a formal appeal.

File a formal appeal if it doesn't get fixed

Most counties have a specific appeal or board-of-equalization deadline, often 30 to 60 days from your assessment notice, and missing it usually means waiting a full year for the next opportunity. If the informal correction doesn't work, file within that window.

Separate the solar issue from a broader over-assessment

A missed solar exemption and a generally inflated assessment are different problems that sometimes show up in the same notice. If your broader concern is that your assessment looks high overall, bring comparable local sales to the conversation, not just the exemption statute.

Quick Answers

Do solar panels always increase property taxes?

No. They generally increase market value, but most states have a specific exemption or exclusion that keeps that added value off your tax assessment. Whether you're taxed on it depends almost entirely on your state — and in some states, your city or town.

Is the solar property tax exemption automatic?

Sometimes. States like Florida, Arizona, South Carolina, and North Carolina are generally structured to apply without a separate homeowner filing. Others — including Texas, New Jersey, Wisconsin, New Hampshire, Iowa, and Massachusetts — require you to file a specific form, sometimes by a hard deadline. Check your state.

Do leased solar panels get the same tax treatment as owned panels?

Not always. Several states tie the property tax exemption to ownership of the equipment, not just its presence on your property. A leased or PPA system may not qualify for the homeowner's exemption, though it may also be excluded from your assessment on a different basis, as personal property belonging to the leasing company. Ask your assessor how your specific arrangement is classified.

Does adding a home battery affect my property taxes differently than solar alone?

It can. Battery storage law is newer and less uniform than solar law. Some states extend their existing solar exemption to paired batteries; others require the battery to be functionally tied to the solar system; some haven't addressed it clearly at all. Confirm separately.

My state isn't on your list — does that mean there's no exemption?

Not necessarily. We only listed states we could verify against a current, authoritative source. Some states may have exemptions we couldn't confirm before publishing, and some genuinely don't offer one. Check your state revenue department, energy office, or DSIRE, the standard national database for these incentives, directly.

If your assessment jumped after a solar install — or you're not sure whether the exemption was applied correctly — Grove Hopper's free check compares your current assessment against comparable local sales in about two minutes, so you can see whether the number your county is using actually holds up. Grove Hopper doesn't file appeals for you or act as your representative — you review, sign, and submit everything yourself — but it will tell you fast whether it's worth a closer look.