Energy-efficient windows in NJ qualify for a real federal tax credit, plus utility rebates from PSE&G and JCP&L. The combined incentives can offset a meaningful portion of a typical whole-house window replacement. Here's the complete picture for NJ homeowners in 2026.
Federal Section 25C tax credit
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.
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 rebates (most of NJ)
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.
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 (FirstEnergy) rebates
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.
Other NJ utilities
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.
NJ Clean Energy Program (run by the state Board of Public Utilities) offers rebates on whole-home retrofits including windows when bundled with insulation, air sealing, and HVAC upgrades. The rebates can be substantial but the application process is more involved.
What Energy Star certified actually means
Energy Star is a federal certification administered by the EPA. For windows, it's a NFRC-tested rating that varies by climate zone:
- Energy Star certified, Northern climate (NJ Zone 5 — North/Central NJ): U-factor ≤ 0.27, SHGC ≤ 0.40 (no upper limit for SHGC required since we want winter solar gain).
- Energy Star certified, North-Central climate (NJ Zone 4 — South/Coastal NJ): U-factor ≤ 0.30, SHGC ≤ 0.40.
- Energy Star Most Efficient (the tier required for federal tax credit): U-factor ≤ 0.20 in Northern, ≤ 0.22 in North-Central. This is typically triple-pane product.
Real annual savings
How much do Energy Star windows actually save in NJ? Based on the EPA's calculation methodology applied to typical NJ houses:
- Replacing single-pane wood windows with Energy Star certified IGU: large annual heating and cooling cost reduction — this is the upgrade with the strongest payback. Actual savings depend on house size, current windows, and your utility rates.
- Replacing builder-grade dual-pane (no Low-E) with Energy Star certified IGU: moderate annual savings. Worthwhile for the comfort and longer-term value, but the payback math is slower than the single-pane swap above.
- Replacing already-good IGU (Low-E argon) with Energy Star Most Efficient (triple-pane): small annual savings only. Payback period for the upcharge is typically 15-30 years — often longer than the IGU service life. We don't recommend this upgrade purely on energy math.
Putting the incentives together
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:
- Federal Section 25C credit: 30% of qualified product cost, capped at the IRS annual limit. Applies to product only, not labor.
- PSE&G or JCP&L rebate: per-window rebate up to the per-residence cap (currently 10 windows). Stackable on top of the federal credit.
- Combined: typically offsets a single-digit percentage of total project cost. Meaningful, but it should not be the deciding factor in your spec — pick the right window for your house first, then claim every incentive you qualify for.
- Annual energy savings: vary widely depending on what you're replacing. The biggest gains come from upgrading single-pane wood to Energy Star IGU; gains from already-good IGU to Most Efficient are modest.
How to claim the incentives
Step-by-step:
- Spec ENERGY STAR Most Efficient windows in your contract. Verify the NFRC sticker on each window when delivered.
- Save the manufacturer's certification statement (provided with windows) — required for tax credit substantiation.
- Save your contractor's invoice with itemized window product cost separated from labor.
- File IRS Form 5695 with your federal tax return for the year the windows were installed (not paid for — installed).
- Submit utility rebates within 90 days of installation through your utility's online portal. Need: customer account #, manufacturer certification, NFRC labels (photos OK), contractor invoice.
- Keep records for 3 years post-claim in case of IRS or utility audit.