Service area · Long Island

Solar and home energy across Long Island, from Nassau to the East End

Long Island runs on its own grid: PSEG Long Island operates the electric system for LIPA, with interconnection rules and heat-pump rebates that differ from the rest of New York. Quest Solar designs for Long Island capes, ranches and colonials and handles the town or village permit for you.

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Areas we serve

Nassau County
Suffolk County
North Shore
South Shore
The East End

Eastern Queens and western Nassau share the same housing stock across the city line — the 110xx ZIP codes even straddle it. Quest serves both sides, filing with the NYC Department of Buildings in Queens and with the town or village building department in Nassau.

Utilities in Long Island

PSEG Long Island
Operates the electric grid on Long Island for LIPA. Interconnection, net metering and heat-pump rebates are handled through PSEG Long Island rather than the programs used by Con Edison customers.
National Grid
Provides natural gas service on Long Island. Gas customers converting to heat pumps should keep their gas account details handy for the consultation.

Permitting and approvals

Town, city and village building departments
Nassau and Suffolk are divided into towns, cities and incorporated villages, each with its own building department and inspection process. We confirm which office has jurisdiction over your address before filing.
Unified Solar Permit
Many New York municipalities have adopted NYSERDA's Unified Solar Permit for small residential systems, which standardizes the application. We check whether your municipality uses it.
Coastal wind design
Waterfront and South Shore homes can sit in higher design-wind zones, so racking, attachments and roof condition get extra engineering attention.
Electrical inspection
Solar, battery and EV charger work is inspected by an approved electrical inspection agency before PSEG Long Island grants permission to operate.

Homes and buildings we design for

Capes, ranches and high-ranches with simple pitched roofs
Colonials and split-levels on wooded North Shore lots
Waterfront and South Shore homes in coastal wind zones
Homes heated with oil or gas that are considering heat pumps
Two-family homes near the Queens line

Services in Long Island

Programs and incentives in Long Island

New York's NY-Sun program and the New York State solar tax credit apply on Long Island, subject to eligibility; NY-Sun availability in the Long Island region follows its own blocks, which we confirm for your project. PSEG Long Island runs its own heat-pump rebates, separate from NYS Clean Heat, so we confirm the current offer during your consultation. The federal homeowner solar credit is not available for 2026 projects.

Verified November 2026; programs and funding can change. Incentives, rebates and tax credits depend on your utility, location, income, equipment, project details and program funding at the time you apply. Quest Solar does not guarantee eligibility or amounts and does not provide tax advice; consult a qualified tax professional about tax credits.

NY-Sun (NYSERDA)

NY-Sun continues to offer solar incentives whose value depends on location (for example, the Con Edison region), project size and sector. NYSERDA announced on October 14, 2026 a framework for $200 million in additional funding; program details are still being finalized. Residential and nonresidential applications are accepted through December 31, 2030 or until funds are fully committed.

Customer eligibility: Incentive levels change by block and region and are not the same for every project. Your installer applies on your behalf; the amount is confirmed in your proposal.
How Quest helps: Quest reviews current NY-Sun block levels for your utility region and prepares the application paperwork as part of your project.

Official sources: NYSERDA — NY-Sun (opens in a new tab) · NYSERDA — NY-Sun dashboards and incentives (opens in a new tab)

NY-Sun Affordable Solar

Income-qualified New York households may be eligible for additional solar incentives through NY-Sun's affordable solar offerings.

Customer eligibility: Eligibility and amounts are program-specific and based on household income and other criteria set by NYSERDA.
How Quest helps: Quest can tell you which documents NYSERDA asks for and include the affordable-solar path in your proposal if you qualify.

Official source: NYSERDA — Paying for solar (opens in a new tab)

New York State solar tax credit, property-tax exemption and NYC abatement

NYSERDA's paying-for-solar page lists a New York State solar equipment tax credit (25%, subject to a cap), a property-tax exemption for solar, and a property-tax abatement for eligible systems in New York City.

Customer eligibility: Tax benefits depend on your tax situation, property and local rules. Ask a qualified tax professional before relying on any credit.
How Quest helps: Quest provides the system cost and equipment documentation your tax preparer needs.

Official source: NYSERDA — Paying for solar (opens in a new tab)

Federal Residential Clean Energy Credit (ended)

The federal Residential Clean Energy Credit is not available for expenditures after December 31, 2025 — the IRS states it is not available for property placed in service after that date. Quest does not advertise a 30% federal homeowner solar credit for 2026 projects.

Customer eligibility: Questions about prior-year systems belong with a tax professional.
How Quest helps: We price residential projects without assuming a federal homeowner tax credit.

Official source: IRS — Residential Clean Energy Credit (opens in a new tab)

Federal home-improvement and EV-charger credits (ended)

According to the IRS, the Energy Efficient Home Improvement Credit (which covered heat pumps) applies only to property placed in service before the end of 2025, and the Alternative Fuel Vehicle Refueling Property Credit (EV chargers) applied to property placed in service through June 30, 2026.

Customer eligibility: Confirm any prior-year claim with a tax professional.
How Quest helps: Our heat-pump and charger proposals do not assume these federal credits.

Official sources: IRS — Energy Efficient Home Improvement Credit (opens in a new tab) · IRS — Alternative Fuel Vehicle Refueling Property Credit (opens in a new tab)

Federal commercial clean-electricity credit (Section 48E)

Commercial solar may still qualify for federal investment credits, subject to construction-start and placed-in-service deadlines, prevailing-wage and apprenticeship rules for larger projects, and other requirements. IRS Notice 2025-42 explains how beginning of construction is determined for solar facilities.

Customer eligibility: Eligibility and credit value depend on project size, timing, labor compliance, ownership and tax position. Have a qualified tax professional review your project; Quest never guarantees credit eligibility.
How Quest helps: Quest provides the schedule, cost and labor documentation your tax advisor requests.

Official sources: IRS — Clean Electricity Investment Credit (opens in a new tab) · IRS — Notice 2025-42 (beginning of construction) (opens in a new tab)

Frequently asked questions

Who is my electric utility on Long Island?

PSEG Long Island operates the electric grid across Nassau and Suffolk (and the Rockaways in Queens) for LIPA. Your bill shows the account details we need.

Do you serve the East End?

Yes. All of Suffolk County is in our service area, including the North and South Forks.

My house is near the water. Does that change the design?

It can. Coastal homes may need racking and attachments rated for higher design wind speeds, and we look closely at roof condition before recommending solar.

Can I get a heat-pump rebate on Long Island?

PSEG Long Island offers its own heat-pump rebates. Eligibility depends on the equipment and what it replaces, so we confirm the current program for your home.

Start your Long Island project

Share your address and goals. We confirm your utility, programs and permits before recommending anything.