What is a cool roof, and why it matters in Arizona

A cool roof uses reflective materials or coatings — light-colored shingles, reflective tile glazes, or specialized coatings on flat and low-slope roofs — to reflect more sunlight and absorb less heat than a standard dark roof surface. In Arizona’s climate, that translates directly into a cooler attic, reduced air conditioning demand during summer months, and often a longer lifespan for the roofing material itself, since less heat absorption means less thermal stress over time.

The federal tax credit is no longer available

Homeowners researching this topic will find plenty of older articles mentioning a federal Energy Efficient Home Improvement Credit (Section 25C) that covered a share of the cost for qualifying home energy upgrades. That credit expired for any project placed in service after December 31, 2025, under recent federal legislation. If your cool roof project was completed and installed before the end of 2025, you may still be able to claim it on your 2025 tax return — but for any project happening in 2026, this federal credit no longer applies. Any guide or contractor still advertising this federal credit for a 2026 installation is referencing an incentive that has already ended.

What’s still available: utility rebates

With the federal credit gone, utility-level rebates are the primary financial incentive left for Arizona homeowners considering a cool roof in 2026.

SRP Cool Roof Rebate

Salt River Project offers a residential Cool Roof Rebate for customers who install a qualifying cool roof product on a low-slope roof (a roof pitch of 2:12 or less). The rebate is paid per square foot of installed cool roofing material — 30 cents per square foot, up to a maximum of $600 — provided the product meets SRP’s reflectance and performance requirements. The rebate is available to permanent SRP residential electric customers in single-family homes, attached homes, and applicable multi-unit properties, and the application must be submitted within six months of installation, along with proof of the product and installation.

APS residential efficiency rebates

Arizona Public Service offers a broader residential energy efficiency rebate program covering measures like AC upgrades, duct sealing, insulation, and smart thermostats. Whether a cool roof product specifically qualifies varies by current program terms, so if you’re an APS customer, it’s worth confirming directly with APS what’s currently eligible before assuming a specific rebate amount.

TEP commercial cool roof incentives

Tucson Electric Power offers cool roof incentives primarily structured for commercial customers in southern Arizona, with rebate amounts that vary based on system type and reflectivity performance. Residential TEP customers should check current program offerings directly, since incentive structures and availability shift from year to year.

Rebate eligibility generally depends on the product, not just the color

Utility rebate programs typically require the roofing product to meet specific solar reflectance and thermal emittance standards — not just “look light-colored.” Many programs reference ratings from the Cool Roof Rating Council (CRRC), and the specific reflectance thresholds required can differ depending on whether your roof is low-slope or steep-slope. This is a detail worth confirming with your contractor and the utility program directly, since installing a product that doesn’t meet the technical specification can mean missing out on the rebate entirely.

What this means if you’re planning a cool roof project in 2026

• Don’t budget around the federal 25C tax credit — it no longer applies to projects installed in 2026.
• Check which utility serves your home, since rebate availability and amounts differ significantly between SRP, APS, and TEP.
• Confirm the specific product you’re considering is rated and documented to meet your utility’s reflectance requirements before installation, not after.
• Apply within your utility’s required window — SRP, for example, requires the rebate application within six months of installation.
• Ask your roofing contractor whether they have experience navigating the specific rebate paperwork for your utility, since documentation requirements (photos, invoices, product labels) are typically strict.

Beyond rebates: the case for a cool roof anyway

Even without a federal tax credit in the mix, a cool roof’s core value proposition in Arizona hasn’t changed: lower attic temperatures, reduced cooling costs during the hottest months, and less thermal stress on the roofing material over its lifespan. A modest utility rebate is a nice offset to installation cost, but the ongoing energy savings are the larger, longer-term benefit for most Arizona homeowners.

Questions to ask before you install

• Which utility serves my home, and what cool roof or efficiency rebates are currently active for residential customers?
• Does the specific product I’m considering meet the reflectance rating required for that rebate?
• What documentation will I need to submit, and by when after installation?
• How does a cool roof product compare in cost and appearance to a standard option for my specific roof type?