NY-Sun and New York Solar Incentives in 2026: The Full Stack Explained

New York quietly runs one of the most generous residential solar incentive programs in the United States. Between the NY-Sun rebate administered by NYSERDA, a 25% state income tax credit capped at $5,000, a 15-year real property tax exemption, and a state sales tax exemption on equipment, a typical Long Island or Hudson Valley homeowner can knock $7,000 to $12,000 off the sticker price of a rooftop system before the federal picture even enters the conversation.

The catch is that these four programs don't talk to each other. Each has its own eligibility rules, paperwork, and timing. If your installer quietly skips one — and plenty do — you end up leaving real money on the table. Here is the plain-English version of every piece, how they stack, and what the numbers look like in 2026.

1. The NY-Sun Rebate (NYSERDA)

NY-Sun is the state's cash-on-the-barrel rebate, funded through the Regional Greenhouse Gas Initiative and utility surcharges and administered by the New York State Energy Research and Development Authority (NYSERDA). The rebate is paid directly to your installer, who applies it as a line-item discount on your contract.

Residential rebates are calculated per watt of installed DC capacity and vary by region:

• Long Island region (PSEG-LI service territory): ~$0.20/W
• Con Edison region (NYC + Westchester): ~$0.20/W
• Upstate region (National Grid, NYSEG, RG&E, Central Hudson, O&R): ~$0.20/W, though some blocks have dropped lower as the program matures

On an 8 kW system that's roughly $1,600 trimmed off the top, and larger systems scale proportionally up to the 25 kW residential cap. NY-Sun has historically stepped down as each "block" of capacity fills, so the rebate available when you sign is what you get — there is no retroactive bump and no retroactive cut.

To actually receive the rebate your installer must be NYSERDA-approved, which is worth verifying on the NYSERDA contractor directory rather than taking the salesperson's word. Co-op and community solar projects use a different NY-Sun track.

2. New York State Solar Tax Credit (25%, Up to $5,000)

Separate from the federal picture, New York offers a personal income tax credit worth 25% of qualified residential solar costs, capped at $5,000. Unlike a rebate, this is a non-refundable credit you claim on Form IT-255 when you file your state taxes, but any unused portion rolls forward for up to five years — so even homeowners with modest state tax liability usually capture the whole thing eventually.

Important details most installers gloss over:

• The credit applies to purchased systems, cash or loan. Leased systems and PPAs do not qualify for the homeowner; the third-party owner keeps the benefit.
• The basis is gross system cost before NY-Sun, so your 25% is calculated on the full contract price.
• Combined solar + battery installations: the solar-only portion qualifies; the standalone battery cost does not (the battery gets handled at the federal level — more below).

For a $24,000 pre-rebate system, the credit is the full $5,000 cap. For a $16,000 system, it's $4,000.

3. Property Tax Exemption (15 Years)

Under New York Real Property Tax Law §487, solar installations are exempt from the increase in property value they create for 15 years. This matters more than homeowners realize: a well-sized system typically boosts appraised value by 3–4% (multiple studies, including Lawrence Berkeley National Lab work, confirm this), and in high-mill-rate towns in Westchester, Nassau, and the North Country, that translates to hundreds of dollars in avoided tax every year.

A wrinkle: municipalities have the option to opt out of §487 and a minority of them (roughly 20% of towns statewide) have. Before signing anything, check your town's status on the NYSERDA property tax exemption map or call the local assessor's office. If your town has opted out, the exemption simply doesn't apply — there is no workaround.

4. State Sales Tax Exemption

New York waives the state portion of sales tax (4%) on residential solar equipment and installation labor. Most counties also waive their local portion, bringing the total exemption to roughly 7–8.875% depending on jurisdiction. On a $24,000 system, that's about $1,800–$2,100 in avoided sales tax — handled automatically by your installer at invoicing, so you typically don't file anything yourself.

What About the Federal Picture?

For 2026 the federal residential Section 25D credit — the classic 30% homeowner credit for purchased solar + battery — expired at the end of 2025 under the One Big Beautiful Bill Act. Systems placed in service in 2026 and later no longer claim it. However:

• Leases and PPAs can still capture the federal Section 48E commercial ITC through the third-party owner, who typically passes some of the benefit back as a lower lease price. This is why 2026 is quietly shifting many price-sensitive New York buyers back toward TPO structures.
• Battery-only retrofits on an existing system are in the same boat — 25D is gone for homeowners, 48E is available to commercial owners.

Net effect: the federal piece of the stack is smaller in 2026 than it was in 2025, which makes the New York state stack proportionally more important, not less.

Real Numbers: An 8 kW System in Westchester in 2026

Here is how the math typically runs for a purchased 8 kW system priced at $24,000 before any incentives, installed in a town that honors §487:

• Contract price: $24,000
• NY-Sun rebate (Con Edison territory, ~$0.20/W × 8,000 W): −$1,600
• State sales tax exemption (~8%): −$1,800
• Net out-of-pocket at signing: $20,600
• NY state tax credit at filing time (25% × $24,000, capped at $5,000): −$5,000
• Effective net cost after state credit: $15,600
• Plus 15 years of avoided property tax increase on the ~$7,000 of added appraised value at a 2.5% mill rate: roughly $2,600 in lifetime savings

Round numbers: the four state programs combined trim a 2026 New York purchase by around 40% of gross cost before you even start counting bill savings.

Where Homeowners Go Wrong

Three recurring mistakes we see in the quotes New York readers send in:

1. Taking NY-Sun off twice. Some installers subtract the rebate from the price and quote the state tax credit against the net, which shortchanges you by 25% of the rebate amount. The state credit is calculated on gross cost.
2. Assuming the property tax exemption is automatic everywhere. Always verify your town's §487 opt-in status before you close the loan.
3. Leasing without running the math. A purchased system in 2026 still beats most NY leases over 25 years if you can use the state tax credit, because the full $5,000 goes to you rather than to a third-party owner's ledger.

What To Do Next

Pull up your most recent Con Edison, National Grid, NYSEG, RG&E, PSEG-LI, Central Hudson, or O&R bill, check your town's §487 status, then run your zip code through the Energy Scout calculator to estimate your system size and the full stacked incentive picture before you start collecting installer quotes. When quotes do arrive, insist on seeing all four state incentives broken out as separate line items — if an installer can't or won't itemize them cleanly, that's a signal to keep shopping.

For federal 48E lease options, Energy Scout's provider directory flags installers who offer TPO products that pass the federal credit back through to customer pricing.

Sources

1. NYSERDA, NY-Sun Residential and Small Commercial Incentive
2. New York State Department of Taxation and Finance, Form IT-255: Claim for Solar Energy System Equipment Credit
3. NYSERDA, Real Property Tax Exemption for Solar (RPTL §487)
4. DSIRE, New York Incentives
5. Lawrence Berkeley National Lab, Selling Into the Sun: Price Premium Analysis of a Multi-State Dataset of Solar Homes
6. Internal Revenue Service, Section 25D and Section 48E Overview
7. SEIA, New York Solar Market Insight