Ask ten Arizona homeowners which utility pays better rebates and you'll get ten confident, contradictory answers. The honest truth is more useful than any of them: it depends on your home, your measures, and each program's budget this year — and most homeowners don't get to choose their utility anyway. What actually matters is capturing the maximum available from whichever serves you, and knowing that the audit is the key that unlocks it. Here's how the two programs compare in 2026.
First: The Audit Is the Gateway
Before comparing dollar amounts, understand why the audit matters. Both APS and SRP tie their largest rebates — for insulation, air sealing, and duct sealing — to a documented professional assessment. The utilities want proof that the work genuinely saves energy, and that proof is a measured baseline: a blower-door number, a duct-leakage measurement, an insulation assessment. Skip the audit, hire a contractor directly, and you often forfeit incentives you were entitled to because the baseline was never established.
APS: How the Program Works
Arizona Public Service runs a portfolio of residential efficiency programs. Historically these have included:
- A Home Performance pathway that pairs a professional assessment with rebates on high-impact measures — duct sealing, air sealing, and insulation.
- A rebate marketplace for efficient equipment, such as smart thermostats.
- Demand-based rate plans where the timing of your usage matters as much as the total, changing which improvements deliver the most value.
APS territory covers much of Phoenix proper, Scottsdale, Peoria, Surprise, Goodyear, Glendale (in parts), and beyond. If you're on an APS demand plan, reducing your afternoon peak load can lower your bill even without cutting total usage.
SRP: How the Program Works
Salt River Project runs its own set of home energy programs, historically including:
- Home energy assessments and rebates for duct testing and sealing, insulation, shade screens, smart thermostats, and AC tune-ups.
- Demand and time-of-use plans (like the EZ-3 and demand-based options) that reward shifting load away from the afternoon peak.
SRP serves much of Mesa, Tempe, Chandler, Gilbert, and parts of the East Valley. For SRP customers on demand plans, an audit's fixes that reduce peak load can be especially valuable.
Side-by-Side: The 2026 Comparison
| Consideration | APS | SRP |
|---|---|---|
| Assessment-linked rebates | Home Performance pathway | Home energy assessment programs |
| Common rebated measures | Duct sealing, air sealing, insulation, thermostats | Duct sealing, insulation, shade screens, thermostats, AC tune-ups |
| Demand-rate savings | Available on demand plans | Available on demand/TOU plans |
| Verify current amounts | aps.com | srpnet.com |
Notice how similar the programs are in structure. Both reward the same core measures, both link the biggest rebates to a professional assessment, and both offer demand-plan savings an audit can help you capture. The differences that matter in any given year come down to specific dollar amounts and program budgets — which is exactly why you verify current figures before committing.
The Federal 25C Credit Stacks on Top
Here's the part that makes both paths more attractive: the federal 25C Energy Efficient Home Improvement Credit rewards a qualifying home energy audit (historically up to $150) and the improvements it recommends — insulation and air sealing carry their own additional credits. Crucially, the federal credit stacks with utility rebates. You don't choose between them; you claim both. (Tax rules change, so confirm current eligibility and limits with a tax professional before filing.)
So — Which One Pays More?
There's no permanent winner, and chasing one over the other usually isn't an option since your address determines your utility. The productive question isn't "APS or SRP?" — it's "how do I capture the maximum from the program that serves me, and stack the federal credit on top?" That's what a good audit sets up: it documents your existing conditions to the program's standard, identifies which current offers apply to your specific measures, and prepares the paperwork you'll submit.
Don't Forget Demand Charges
One of the most overlooked opportunities in both programs is optimizing for demand charges. If you're on an APS or SRP demand plan, part of your bill is driven by your single highest hour of usage. The efficiency improvements an audit recommends don't just cut total energy — they lower that peak, which reduces demand charges directly. For many homeowners this is found money sitting in the structure of their bill.
The Bottom Line
Stop trying to game which utility pays more. Both APS and SRP reward the same smart improvements, both require a professional assessment to unlock the biggest rebates, and the federal 25C credit stacks on top of either. The move that actually pays is getting the audit that qualifies you — then claiming everything available.
Ready to find out exactly what your home qualifies for? Book an audit or call 844-967-5247, and we'll map every APS, SRP, and federal dollar to your specific home.