Solar Panel Installation in Brentwood, NY
Local sun, utility rules, permits and installers
Brentwood has about 1,170 kWh a year per kW of rooftop solar (our estimate). Your utility decides what exported power earns, so see the rules for PSEG Long Island (LIPA) below, then get quotes.
Brentwood solar at a glance
Utility rules and programs for Brentwood
PSEG Long Island (LIPA) serves homes in Brentwood.
| Utility | Type | Solar export rule |
|---|---|---|
| Long Island Power Authority | publicly owned | LIPA’s tariff nets residential solar of 25 kW or less (and no more than 110 percent of your last twelve months of use) and credits extra power on the next bill at the same per-kWh rate as other customers in the class; mass market systems connected since Jan. 1, 2022 pay the CBC. |
Program details are from each utility’s own pages (read October 2026). See the New York incentives table for statewide credits and a status for every program.
Permits and approvals in Brentwood
- Town of Islip Building Division (Brentwood is a hamlet of Islip): permit information · 631-224-5470
- Brentwood is served by the Town of Islip, which uses the NY State Unified Solar Permit for systems of 25 kW or less and takes applications through its online portal.
- The utility must approve the connection before you switch on: LIPA Tariff for Electric Service (net metering) · your own utility’s interconnection page.
- Check any contractor on the NYC Buildings: Know Your Construction Professional before you sign.
- State law bars homeowners’ associations from rules that effectively prohibit or unreasonably limit rooftop solar of 25 kW or less (Real Property Law section 342), though associations can still restrict common property.
Fees and steps change; confirm with the office before you start. We have not verified timelines for Brentwood.
Costs and savings
We do not have verified installed prices for Brentwood alone. The New York figures above show what to expect; real quotes depend on your home, equipment and installer. Try the solar savings calculator, and get at least two written quotes.
Choosing an installer
- License: check the contractor on the NYC Buildings: Know Your Construction Professional and that the license covers this work.
- Quote: ask for an itemized written quote that names the equipment, warranties and who pulls the permit and handles the utility approval.
- Compare: get two or three quotes and compare them line by line, not only the total.
Get solar quotes in Brentwood
Tell us about your project in Brentwood. We reply ourselves and match you with a licensed installer who serves your area. It is free, with no obligation, and nothing is shared with an installer unless you choose one.
More for Brentwood
Home Battery Installation in Brentwood · Backup Generator Installation in Brentwood · Home EV Charger Installation in Brentwood · Brentwood energy guide · New York energy guide.
Solar Panel Installation in Brentwood FAQs
Is solar worth it in Brentwood?
The sun is strong (about 1,170 kWh a year per kW, our estimate), but export credits are low, so solar pays most when sized to what you use at home or paired with a battery. See the New York incentives for the state credit.
Is there a federal solar tax credit in 2026?
No. The federal 25D credit ended for expenditures after December 31, 2025. New York has a state income tax credit of 25 percent of cost up to $5,000 for solar at your principal residence, plus an exemption from state sales tax and (unless your locality opted out) a property tax exemption for the added value.
Do I need a permit for solar panels in Brentwood?
Usually yes, and the utility may need to approve solar and batteries. Town of Islip Building Division (Brentwood is a hamlet of Islip) handles permits in Brentwood; see the permit information above.
How do I find a licensed installer in Brentwood?
Use the quote button on this page. We reply ourselves and match you with a licensed installer who serves your area; you can check any contractor on the NYC Buildings: Know Your Construction Professional.
Sources: sunshine and climate NASA POWER; hazards FEMA National Risk Index; utility numbers EIA-861 (2024); prices EnergySage (October 2026) and Generac (U.S.); credits IRS and the New York State Department of Taxation and Finance; permit information from the city or town’s own page; utility programs from each utility’s own pages (October 2026). General information, not financial, tax, legal or electrical advice. See our editorial policy.
Where to buy
Amazon shows many brands. Use the checklist to compare them.
What to check before you buy:
- Rated watts and connector type match your power station
- Folding panels: weight and weather rating are listed
- Reviews from people using it for the same job