Why Is My APS Bill So High in 2026?

Why is my APS bill so high? For most Arizona homes, the answer is a mix of things. Some are obvious, like desert heat, long hours of air conditioning and a bigger house. Others are easy to miss: your rate plan, the time of day you use power, small bill adjustors and an aging AC that works harder every year.

So before you decide that Arizona Public Service (APS) simply “raised your rate,” separate two things. One is the price of electricity. The other is how much electricity your home is using. They need different fixes.

Did APS Rates Go Up in 2026?

APS base rates have not changed since March 8, 2024. But some smaller pieces of the bill did move. These are called adjustors, which are extra per-kWh charges the Arizona Corporation Commission (ACC) lets APS update between rate cases. A kWh (kilowatt-hour) is the unit of electricity on your bill.

• Power Supply Adjustor (PSA): covers fuel and purchased power. A new rate took effect February 1, 2026, and it resets each February.
• Transmission Cost Adjustor (TCA): covers the high-voltage lines that move power. A new rate took effect June 1, 2026.
• Lost Fixed Cost Recovery (LFCR): a new rate took effect December 1, 2025.

Each one is a small per-kWh charge. They can nudge a bill up, but they rarely explain a big jump on their own.

Is APS Asking for a Bigger Rate Increase?

Yes. APS filed a major rate case with the ACC in June 2025. Overall, it asks for about 13.99% more from all customers combined. APS says a typical home using 1,000 kWh a month would pay about $20 more per month if the plan were approved as filed.

But a request is not an approved increase. The hearing ended in July 2026, and the ACC has not ruled yet. APS expects a decision later in 2026. The ACC can approve, change or reject parts of the plan. The case did not change anyone's summer 2026 bill.

Arizona Heat May Be the Bigger Reason

For many APS customers, air conditioning is the largest load in the house. In extreme heat, your AC runs longer, harder and more often. It may also run during the hours when power costs the most.

That means your price per kWh can barely change while your bill jumps. The home simply used far more electricity.

Compare kWh Before You Compare Dollars

Suppose your July 2025 bill showed 1,250 kWh and your July 2026 bill showed 1,850 kWh. That's a 48% increase in usage. Even if your rate stayed flat, the bill would rise sharply.

So the first question isn't why your bill went up. It's whether your kWh changed. If usage barely moved but the bill climbed, look at your plan, your peak-hour use and the adjustors.

When You Use Power Matters on APS

Many APS homes are on a time-of-use (TOU) plan, where the price depends on the time of day. On APS's current TOU plans, on-peak is 4–7 p.m. on weekdays, all year. Weekends and holidays are off-peak.

On the main TOU plan, summer on-peak power costs about 2.8 times as much as off-peak power. So two homes can use the same total kWh and still get very different bills. The home that runs the dryer, oven and pool pump at 5 p.m. pays more.

This matters a lot in Arizona. AC demand often peaks in the late afternoon, right when the grid is most stressed and prices are highest.

Your Thermostat Affects More Than Comfort

Picture a 110°F afternoon. Dropping the thermostat from 78°F to 72°F makes the AC run much longer. If that extra runtime lands between 4 and 7 p.m., you pay twice. You use more power, and you buy it at the highest price.

That's why rate-plan review and HVAC review should happen together. One shows when power costs the most. The other shows how much your home needs.

Is My AC Driving My APS Bill?

Watch for these warning signs:

• The AC runs almost nonstop.
• The house struggles to reach the thermostat setting.
• Some rooms stay much hotter than others.
• Indoor humidity feels off.
• Your kWh is higher than the same month last year.
• The system is more than 10–15 years old, or repairs are getting frequent.

An AC can still “work” while getting more expensive to run every summer.

Step 1: Check Your APS Rate Plan

Start with your bill. Find your plan name, your peak and off-peak hours, any demand charge and your monthly kWh. A demand charge is a fee based on your highest one-hour use during peak hours.

Then ask: does the way we live fit this plan? Some homes have people working from home, two AC units, a pool or an EV. They may need a different plan than a home that sits empty all day. APS has an online plan comparison tool that uses your own usage history.

Step 2: Look at Hourly or Daily Usage

Your APS smart meter shows when your home uses power. Look for big usage during afternoon cooling, pool pump runs, EV charging and electric water heating.

Sometimes moving a flexible load out of the 4–7 p.m. window saves more than new equipment would. It also costs nothing.

Step 3: Evaluate the HVAC System

If cooling drives your summer usage, check the system's age and efficiency rating. Also look at refrigerant, airflow, duct leaks, thermostat settings and runtime.

The most useful question isn't “Do I need a new AC?” It's “How well is my current system keeping up with this house?”

Step 4: Check the Attic and the Shell of the Home

Arizona attics get extremely hot. Thin insulation and air leaks force the AC to fight heat all day. Look at attic insulation, ductwork, air sealing, windows, outdoor shading and the roof.

If the house soaks up too much heat, making more electricity won't fix the real problem. The home will keep wasting it.

Are Data Centers Making APS Bills Higher?

Data centers are now a big part of Arizona grid planning. APS says requests from extra-large customers now top 19,000 MW. That's more than double the utility's 2025 peak. APS also set a new demand record of 9,164 MW on August 2, 2026.

In August 2026, APS made a “growth pays for growth” pledge. It says data centers will pay their own costs. It also says it won't connect new extra-large customers faster than it can reliably serve them. The pending rate case also proposes a much bigger increase for the largest, steadiest users than for homes.

The fair takeaway: data centers shape Arizona's long-term grid plans. But they don't explain why your bill jumped this summer. Your own usage and plan usually do.

Step 5: Cut the Load First

Suppose your home uses 20,000 kWh a year. HVAC and efficiency upgrades bring that down to 15,500 kWh. That's 4,500 kWh you no longer buy each year.

That cut helps no matter what happens with future APS rates. Every kWh you don't need is a kWh you never pay for.

Step 6: Evaluate Solar

Arizona has excellent sun, and solar can cut how much power you buy from APS. But the math depends on APS's export credit, which is what APS pays for extra solar you send to the grid. It also depends on your rate plan, roof direction, system size, cost, financing and how much power you use during the day.

Don't size solar around a home that wastes energy. Fix the load first so you don't pay for panels you didn't need.

Step 7: Evaluate Battery Storage

A battery can store solar for use after 4 p.m. and keep key loads running in an outage. That can include some cooling, the fridge, internet and medical equipment.

In Arizona, keeping some cooling during an outage can be a health and safety issue, not just a comfort choice. That can change how big a battery should be.

Help If Your APS Bill Is Hard to Pay

APS will not disconnect homes for nonpayment from June 1 to October 15. Outside that window, it pauses shutoffs on days forecast to hit 95°F or higher.

APS also offers bill help. The Energy Support Program gives income-qualified households 25% off, up to $95 a month, or 60% off, up to $165 a month. Crisis Bill Assistance offers up to $1,000 a year. APS CARE offers up to $500 with no income limit.

Should You Buy Solar Because Your APS Bill Is High?

Not automatically. Work through it in this order:

1. Compare kWh year over year.
2. Understand your APS rate plan.
3. Look at when your home uses power.
4. Check HVAC efficiency.
5. Check insulation and ducts.
6. Then evaluate solar and battery storage.

The Ashborn Approach

Before recommending anything, Ashborn Partners looks at your electricity usage, your APS rate plan, your HVAC and your home's efficiency. Then we look at whether solar or battery storage makes sense. An Ashborn Advisor can connect you with participating providers in your area.

Fix the load. Understand the rate. Then decide how to power your home.

APS rates and adjustors can change. APS’s pending rate request (ACC docket E-01345A-25-0105) has not been approved. Household bills vary with usage, weather and rate plan.