Savings estimate
Two levers on your bill.
We handle both.
Most Arizona homes are on the wrong rate plan and can't shift load without changing how they live. Moving to the right plan is the bigger lever. The Power Perfect Box Gen III Super Duty is what makes that shift practical. Here's what both are worth on your bill.
Your home
A 12-month average is best. Summer-only figures will read high.
Not sure? Choose “I don't know” and we'll assume the standard plan for your utility.
Cooking, laundry, AC recovery and EV charging in the evening window is what drives peak billing.
Gen III Super Duty, fully installed. Permit, electrician and commissioning included.
Your estimated result
Estimated reduction in your bill
About $63 to $120 per month · $754 to $1,441 a year
Where your savings come from — each line is money back, not a cost
Based on cash savings only. Equipment protection is excluded.
We read your actual 12 months of usage data and give you a number backed by your meter, not an average.
+How this estimate is calculated
This is an estimate, not a guarantee. It separates two different sources of savings on purpose, because they work differently and you should know which is which.
- Rate plan change is the larger figure for most homes. Moving from a flat or basic plan to a demand-managed plan, and keeping your billed peak down, is where the bulk of the reduction comes from. The range varies with how far your current plan sits from the recommended one and how much energy you currently use in the evening window. This saving comes from the utility's rate structure and from shifting load — it is available to any customer who makes the switch and manages their peak.
- Power Perfect Box Gen III is modeled separately at 3–8% of the energy portion of your bill, rising with the number of variable-speed motor loads in the home. Its role is making the load shift practical without changing how you live, plus reducing motor loss. We do not attribute the rate-plan saving to the hardware.
- Equipment protection is an annualized avoided-cost estimate for surge damage and motor and compressor longevity. It is not cash returned to you, and it is excluded from the payback figure.
- Payback divides your installed cost by cash savings only.
Results vary with rate plan, usage pattern, household behavior, equipment condition and season. SRP and APS both publish plan-comparison tools using your own usage history — we encourage you to run them. Your actual bill is the only way to know your number.
About these figures. The savings shown combine two things: moving to a better-matched utility rate plan, and installing the Power Perfect Box Gen III Super Duty. The higher end of the range reflects households that switch from a basic or flat rate plan, have significant evening energy use, and actively manage their peak demand after installation. Results at the top of the range are not typical. Customers already enrolled in a demand-managed plan will see smaller reductions, because much of the available saving has already been captured by their current plan.
*Individual results will vary. Common savings are 20%–30%, with some customers seeing savings as high as 50%. Results depend on overall energy usage, installation quality, electrical system characteristics, changes in consumption after installation, and the APS or SRP utility plan selected or changed. Demand-charge savings do not apply where demand-charge plans are unavailable. The Power Perfect Box must operate through a full year of normal use before average savings can be assessed across seasonal usage and billing cycles.