Full service
17.03¢
per kWh, 2025 average revenue
$164.54 / month at 966 kWh
Price +3.5% from 2024
Investor Owned · 1,287,097 residential customers · Arizona
Why is my APS electric bill so high?
EIA respondent: Arizona Public Service Co. Reviewed October 14, 2026.
In 2025, APS reported 1,287,097 residential full service customers under the EIA name Arizona Public Service Co. Average revenue was 17.03¢ per kWh. The average monthly bill in that filing was $164.54 for 966 kWh.
17.03¢ is above Arizona's 2025 statewide residential average of 15.26¢. In July 2026 the state residential price was 15.38¢, versus 15.34¢ a year earlier (+0.3%). The utility number is a 2025 annual average. The state number is one later month. They answer different questions.
From 2024 to 2025, the average monthly bill for full service changed −3.2%. Average use changed −6.5% and average price changed +3.5%. Holding the 2024 price fixed, the usage change accounts for −$11.08 a month. The price change, applied to 2025 usage, accounts for $5.61.
EIA Form 861, 2025 final · Reviewed October 14, 2026
EIA Electric Power Monthly, Table 5.6.A · Reviewed October 14, 2026
The rate on the record
Investor-owned base rates are usually set in a state docket. Riders can change outside a full rate case. Average revenue per kilowatt-hour is total residential revenue divided by residential sales. It is not a tariff schedule.
| Service | Customers | Price | Monthly use | Monthly bill | Vs 2024 price |
|---|---|---|---|---|---|
| Full service | 1,287,097 | 17.03¢ | 966 kWh | $164.54 | +3.5% |
EIA-861 sales to ultimate customers, 2025 final, compared with 2024 · Reviewed October 14, 2026
Audit the full service average
Revenue 2,541,319.9 thousand dollars. Sales 14,921,985 MWh. Customers 1,287,097. Cents per kWh = revenue ÷ megawatt-hours × 100. Monthly bill = revenue × 1,000 ÷ customers ÷ 12.
Why a APS bill moved
The average bill fell, and the price piece is separate
Hold a APS household to the filing average and the monthly full service bill changed −3.2% between those two EIA years. Holding the 2024 price fixed, the usage change of −6.5% is worth −$11.08 a month. The price change of +3.5%, from 16.45¢ to 17.03¢, is worth $5.61 on 2025 usage.
Above the Arizona average
17.03¢ per kWh is above Arizona's 2025 residential average of 15.26¢. July 2026 in the state was 15.38¢, versus 15.34¢ a year earlier (+0.3%). The utility figure is a full year of average revenue. The state figure is one later month. A household that uses more than 966 kWh will not land on $164.54.
One full-service average
1,287,097 residential customers were on APS full service in 2025, at 17.03¢ per kWh. That average folds in the customer charge and whatever riders the utility booked as residential revenue. It is not the last block on a tiered tariff.
APS rate case was heard in 2026 and is not decided
Arizona Corporation Commission, Docket E-01345A-25-0105. The Arizona Corporation Commission's July 10, 2026 update says the hearing ran May 18 through July 7, 2026. An administrative law judge's recommended order was expected in late November 2026, with a commission vote deadline of December 31, 2026. If approved, rates would begin in early 2027. APS's public notice, filed… The rate-case section has the full citation.
Season
APS customers in Arizona average 966 kWh a month across the whole year, against a statewide residential average of 1,030 kWh. Summer afternoons do not look like that average. An air conditioner, a pool pump, or a hotter month can move the bill before any rider does.
Large-load treatment was argued, not approved
APS's open rate case, docket E-01345A-25-0105, included argument about an Extra High Load Factor treatment for data centers and manufacturing. The Arizona Corporation Commission had not voted when its July 10, 2026 update was reviewed. No residential data-center surcharge has been approved in the documents read for this page.
EIA-861 2025 and 2024 residential sales · Reviewed October 14, 2026
Rate cases and hikes
pending · Docket E-01345A-25-0105
APS rate case was heard in 2026 and is not decided
The Arizona Corporation Commission's July 10, 2026 update says the hearing ran May 18 through July 7, 2026. An administrative law judge's recommended order was expected in late November 2026, with a commission vote deadline of December 31, 2026. If approved, rates would begin in early 2027. APS's public notice, filed June 13, 2025, requested a base-rate revenue increase of $662.44 million, or 15.99 percent, and a net customer-revenue increase of $579.52 million, or 13.99 percent, after adjustor transfers. The residential class figure in that notice is 16.44 percent, and the requested return on equity is 10.70 percent. APS said a typical 1,000 kWh bill would rise about $20 a month if the request were approved as proposed. Current rates trace to Decision 79293, effective March 1, 2024.
Parties argued an Extra High Load Factor treatment for very large users, including data centers and manufacturing, and a formula rate mechanism. Those were arguments in an open case, not approved charges.
Arizona Corporation Commission, July 10, 2026 (Arizona Corporation Commission) · Reviewed October 14, 2026
Assistance
LIHEAP is the federal bill program, and the state contact list is the place to start. A APS income discount, medical baseline, or budget-billing rule was not retrieved from Arizona Corporation Commission. That offer needs verification.
LIHEAP program · State and territory contacts · APS site
The company homepage is linked for navigation. Program rules on that site were not reviewed. Needs verification.
LIHEAP · Reviewed October 14, 2026
How to lower the bill
- Read the kilowatt-hours against this filing's average of 966 kWh a month. If your use is the thing that moved, the dollar total can rise on an unchanged rate.
- On the statement, separate the base energy charge from fuel or rider lines. A rider can move the total in a month when no new base-rate order exists.
- In Arizona, the expensive hours are late afternoon and early evening in summer. Raise the cooling setpoint when you are out, and run the dryer, the dishwasher, and any pool pump outside those hours if your tariff charges more then.
- Start with LIHEAP for Arizona (https://www.acf.hhs.gov/ocs/map/liheap-map-state-and-territory-contact-listing). A APS discount beyond that program needs verification.
- 746,931 residential customers were already on a dynamic price in the 2025 EIA file. If you are one of them, the window on the tariff is the lever. If you are not, calling the utility to discuss the schedule is the first step, not shifting load you are not being charged extra for.
- If the read is marked estimated, the next actual read can true the account up or down. The tariff rule for that true-up needs verification.
Full service at the 2025 average price
| Monthly use | Estimated bill |
|---|---|
| 500 kWh | $85.15 |
| 750 kWh | $127.73 |
| 1,000 kWh | $170.30 |
| 1,500 kWh | $255.45 |
| 2,000 kWh | $340.60 |
Usage times the average price. At very low use, a real bill is often higher because a fixed customer charge does not shrink. The tariff needs verification.
Questions people ask
Why is my APS electric bill so high?
In 2025, APS reported 1,287,097 residential full service customers under the EIA name Arizona Public Service Co. Average revenue was 17.03¢ per kWh. The average monthly bill in that filing was $164.54 for 966 kWh. 17.03¢ is above Arizona's 2025 statewide residential average of 15.26¢. In July 2026 the state residential price was 15.38¢, versus 15.34¢ a year earlier (+0.3%). The utility number is a 2025 annual average. The state number is one later month. They answer different questions. From 2024 to 2025, the average monthly bill for full service changed −3.2%. Average use changed −6.5% and average price changed +3.5%. Holding the 2024 price fixed, the usage change accounts for −$11.08 a month. The price change, applied to 2025 usage, accounts for $5.61.
What was APS's average residential rate?
Using 2025 EIA-861 revenue and sales, the full service average was 17.03¢ per kWh. Average use was 966 kWh a month and the average bill was $164.54. This folds in whatever customer charges and riders the utility reported. It is not the marginal rate on your tariff.
Did APS raise rates?
Arizona Corporation Commission Docket E-01345A-25-0105 (pending): APS rate case was heard in 2026 and is not decided. Separately, the EIA average price moved +3.5% from 2024 to 2025. The annual average and the docket are not the same document.
What bill assistance can APS customers ask about?
LIHEAP is the federal program for home energy bills (https://www.acf.hhs.gov/ocs/programs/liheap). APS may also offer an income-qualified discount, budget billing, or a medical baseline. The current offer, income cutoff, and how to apply need verification on the utility site and with the state LIHEAP office and Arizona Corporation Commission.
Are data centers why this bill went up?
APS's open case argued an Extra High Load Factor treatment for very large users. That treatment was not approved in the documents reviewed here, and EIA has not published a residential data-center dollar for this bill.