Energy Star Windows in NJ: Rebates & Home Performance

The Energy Efficient Home Improvement Credit (Section 25C of the federal tax code) was extended through 2032 by the Inflation Reduction Act. For windows, the credit is 30% of qualified product cost up to an annual cap published in IRS guidance for the current tax year.

2026 caps that matter for window projects: Section 25C is structured as a stack of category-specific annual limits inside a single overall annual cap. For windows specifically, the IRS cap is $600 per tax year. The total combined annual cap for all 25C improvements (windows + doors + insulation + air sealing + HVAC) is $1,200 per year, plus a separate $2,000 annual cap for heat pumps, heat pump water heaters, and biomass stoves that sits outside the $1,200. This structure rewards splitting a large project across two calendar years if you're at the cap — a 16-window whole-house job where the qualified product cost exceeds $2,000 can be split with 8 windows installed in December and 8 in January to claim the $600 cap twice.

Important: it's the product cost only, not the installation labor. The contractor's invoice should itemize the window product cost separately so you can apply the percentage cleanly when filing. Your CPA or tax preparer can confirm the current cap and how it applies to your project.

To qualify, the windows must be Energy Star Most Efficient certified. Regular Energy Star is not enough — Most Efficient is the higher tier. NFRC-labeled product clearly indicates which tier the window meets.

You claim the credit on IRS Form 5695 (Residential Energy Credits) filed with your federal tax return. Keep the manufacturer's certification statement and your contractor's invoice in case of audit.

PSE&G Comfort Partners and Energy Efficiency programs offer rebates for ENERGY STAR-certified windows in select service-area zip codes. Programs and rebate amounts change periodically — confirm current rates on the PSE&G Marketplace before you sign your install contract.

Per-window rebates are typically capped at a fixed quantity per household per year. The current cap and per-window amount are published by PSE&G; we'll point you at the active rebate page when you start your quote process.

2026 Comfort Partners eligibility: The income-qualified Comfort Partners program in 2026 requires household income at or below 400% of federal poverty level (a meaningful expansion from the prior 200% threshold). For a family of four in NJ that's roughly $124,800 in annual household income — a much wider eligibility band than most homeowners assume. Qualified households receive free home energy audits, free direct-install measures (LEDs, smart thermostat, faucet aerators), substantially higher rebates on Energy Star windows and HVAC, and free attic insulation up to the BPU-set cap. The audit itself is the gateway — schedule it before window replacement and the auditor will document the baseline that triggers higher rebate eligibility.

Eligibility: Must be a PSE&G electric or gas customer in good standing, and the property must be the customer's primary residence. Income-qualified Comfort Partners program offers higher rebates and additional whole-home weatherization measures.

Application: Submit through the PSE&G Marketplace within 90 days of installation. Provide manufacturer's certification, NFRC labels, and contractor invoice.

JCP&L's Energy Efficient Products Rebate Program offers similar incentives to PSE&G for customers in their NJ service area (much of Morris, Sussex, Warren, Hunterdon, Mercer, Middlesex, and Monmouth counties).

Per-window rebates apply to Energy Star certified replacement windows on existing homes, with a per-residence cap. Confirm the current per-window amount and cap on JCP&L's rebate page before signing your install contract.

Income-eligible customers (under 200% of federal poverty level) qualify for JCP&L's WARMAdvantage and COOLAdvantage programs with significantly higher rebates and free home energy audits.

Atlantic City Electric (Atlantic, Cape May, Cumberland, Gloucester, Salem) offers similar rebates through their EmPOWER NJ programs.

Orange & Rockland (O&R) serves a small slice of northern Bergen County. Check their rebate page for window-specific incentives.

Home Performance with Energy Star is the New Jersey program most homeowners mean when they search for whole-home energy rebates — and it's the one that stacks the deepest incentives onto a window project. It's run through the NJ Clean Energy Program (NJCEP), administered by the state Board of Public Utilities and funded by the Societal Benefits Charge on your utility bill. Instead of a flat per-window rebate, it pays for *coordinated* improvements: a BPI-certified contractor performs a blower-door test and combustion-safety audit, then implements a package of air sealing, insulation, HVAC upgrades, and qualifying Energy Star windows.

The state rebate is calibrated to the projected energy savings of the modeled retrofit — a tiered structure with higher rebates at deeper reductions (the 15%, 25%, and 35%+ projected-savings tiers). Bundling windows with attic insulation and air sealing usually pushes a project into a higher tier, because the combined measures hit a deeper savings projection than any single measure alone. Windows on their own rarely qualify for the top tiers; pairing them with at least insulation and air sealing is what unlocks the bigger numbers.

The NJ Home Performance with Energy Star process: (1) Find a BPI-certified Home Performance with Energy Star contractor on the NJCEP website. (2) Schedule the initial energy audit (out-of-pocket or covered depending on program tier). (3) The auditor produces a work scope and savings projection. (4) You choose which measures to implement. (5) Work is completed and post-installation testing verifies the energy reduction. (6) The rebate is paid directly to the homeowner or applied as an instant discount through participating contractors. Timeline from audit to rebate payment is typically 8–16 weeks.

Energy Star is a federal certification administered by the EPA. For windows, it's a NFRC-tested rating that varies by climate zone:

How much do Energy Star windows actually save in NJ? Based on the EPA's calculation methodology applied to typical NJ houses:

For a typical NJ homeowner replacing 12 windows on a Colonial in 2026 with Energy Star Most Efficient product, here's how the incentives layer:

The single largest mistake we see NJ homeowners make on rebate strategy: claiming the window-only rebate when they could have bundled with insulation, air sealing, or an HVAC upgrade and claimed substantially more under the same overall federal cap.

The $1,200 annual cap is the key: Under Section 25C in 2026, windows max out at $600/year, but the overall annual cap for the entire category bundle (windows + doors + insulation + air sealing + central AC + furnace + boiler) is $1,200. If you only do windows, you leave $600 of the annual cap unclaimed. Pairing a window project with attic insulation (also 30% of cost, capped at $1,200 inside the overall $1,200) or air sealing in the same tax year captures the full annual benefit.

Common high-value bundles in NJ:

- Windows + attic insulation: Most NJ pre-1990 housing stock is under-insulated in the attic (R-19 or less; current IECC code is R-49 for our climate zones). Adding R-30+ blown-in cellulose on top of existing insulation is a comfortable single-day job, runs roughly $2,000-4,000 for a typical Colonial attic, and fills the remaining $600 of 25C cap when combined with windows. Comfort improvement is also dramatic — second-floor bedrooms become livable in summer.

- Windows + heat pump: The $2,000 heat pump cap sits OUTSIDE the $1,200 windows/insulation/etc. bundle, so a homeowner can claim $600 windows + $600 other + $2,000 heat pump in the same tax year — a maximum stack of $3,200 in federal credits. Worth structuring a phased plan to land all three in a single tax year if the existing HVAC is at end-of-life anyway.

- Windows + air sealing + insulation + heat pump: The four-measure stack maxes out 25C entirely. Combined with NJCEP Home Performance with Energy Star rebates and the relevant utility rebates, total incentives on a coordinated $30,000-50,000 retrofit can offset 25-40% of project cost.

Sequencing matters: Insulation and air sealing should happen BEFORE window measurements are finalized — a tighter envelope changes whole-house heating/cooling load calculations that some manufacturers use for IGU spec recommendations. In practice, schedule the energy audit first, then air sealing and insulation, then windows.

Section 25C credits are claimed on IRS Form 5695, Part II (Energy Efficient Home Improvement Credit) — but the IRS requires specific substantiation in your records in case of audit. Here's what to assemble and keep.

Required documentation:

- Manufacturer's Certification Statement: A signed statement from the window manufacturer affirming that the specific model meets Energy Star Most Efficient requirements for the climate zone where installed. Every legitimate manufacturer publishes this — usually a one-page PDF available on the manufacturer's website for each model. Andersen, Marvin, Pella, and Wincore all post these openly. Print and save the version current as of your installation date.

- NFRC labels: Photograph each window's NFRC label BEFORE the temporary sticker is removed during cleanup. The label shows U-factor, SHGC, VT, and AL — the values that determine eligibility. Save the photos labeled by room.

- Contractor invoice with itemized product cost: The 30% credit applies only to product, not labor. The invoice must clearly separate the two. If your contractor's standard invoice format doesn't split them, request a revised invoice that does. We provide split-line invoicing automatically on Energy Star projects for this reason.

- Proof of installation date: The credit applies to the tax year the windows were installed, not the year they were ordered or paid for. The contractor's final inspection sign-off or the certificate of completion documents the install date.

Filing mechanics: On Form 5695 Part II, enter the qualified product cost (not the total project cost) on the windows line. Multiply by 30% and apply the $600 cap. The form rolls up into your Form 1040 total credits. The credit is non-refundable — meaning it can reduce your tax liability to zero but cannot generate a refund beyond that.

State filing: NJ does not currently offer a state-level income tax credit for windows, but utility rebates are not taxable income to the homeowner and don't need to be reported on the NJ-1040.

Records retention: Keep all documentation for at least 3 years after filing (the standard IRS audit window for income claims) and 6 years if the credit amount is substantial — the extended audit window applies to larger items. Storing the documents as a single PDF labeled with the tax year is the cleanest filing approach.

Step-by-step: