West Valley Utilities 2026: Providers and Rate Information

Which utility serves a specific West Valley address?

APS and SRP both serve parts of most Valley cities, including Glendale, Peoria, Surprise, Goodyear, Buckeye, Avondale, El Mirage, Sun City, and the communities around them, and the boundary can run down a single street. The rule is simple: the address determines the provider, not the reverse. You generally cannot choose between APS and SRP for a given home, so they are not interchangeable options to shop.

The reliable check is your current bill (if you have one) or the provider's official territory map. The APS service area map and the SRP service territory page are the primary sources. For natural gas, Southwest Gas serves the Phoenix area, including the West Valley, and its Arizona rates and regulation page documents current charges and filings.

What is the current APS rate picture, and what is still pending?

APS's current rates took effect March 1, 2024, with that tariff approved by the Arizona Corporation Commission. Since then, APS filed a new rate case in June 2025 seeking a net base-rate increase of about $579.5 million, which APS has described as roughly 14% overall and about $20 more per month for a typical residential customer.

As of October 2026, that requested increase is still pending: the Commission heard the case from May through July 2026, and a decision was expected around December 2026, with no approved effective date to report. The 14% figure is therefore a proposed request with a defined scope and date, not an effective rate change.

Reports put APS's average residential rate around 12.8 cents per kilowatt-hour. Averages hide variation across plan, usage, and time of use, so your plan's tariff sheet, not the average, is the number that applies to your bill.

What changed for SRP, and what are the current plan rates?

SRP's most recent approved price changes took effect November 2025: an overall 2.4% increase, equal to about $169 million in base revenue, with the average residential customer at 1,117 kWh paying about $5.61 more per month, or about 3.5%, and solar customers about $7.93 more. New residential price plans launched with that change, and legacy plans are being phased out by 2029.

For May through October 2026 billing cycles, SRP temporarily lowered prices by $0.0038 per kilowatt hour, citing lower gas and market power costs. Published winter plan samples show seasonal rates such as about 10.97 cents per kWh on the Basic plan, 15.08 cents on the Conserve plan's 6 to 9 p.m. on-peak window, and 11.19 cents on the Manage Demand plan's 5 to 10 p.m. on-peak window.

Those sample rates are date- and season-specific, and time-of-use pricing means your bill depends heavily on when you use electricity. The SRP plan comparison page is the current source for your plan's tariff and billing cycle.

What is the Southwest Gas picture for natural gas?

Southwest Gas's Monthly Gas Cost rate dropped from $0.37836 to $0.36934 per therm effective January 1, 2026, a change the Commission publicized as bill relief. That rate is an energy-charge component; your total gas bill adds the delivery charge, taxes, and fees.

Two further regulatory items are worth knowing: on February 27, 2026, Southwest Gas filed a general rate case seeking about $101 million more in annual revenue, with new rates not effective before roughly April 2027 if approved; and on August 12, 2026, the Commission approved Delivery Charge Adjustment and Gas Cost Balancing Account adjustments, with associated tariff changes effective March 1, 2026, and September 1, 2026.

The Southwest Gas Arizona rates and regulation page and the Arizona Corporation Commission are the authorities for tariffs and filings.

How should you read a rate schedule without getting fooled?

• Proposed, approved, and effective are different: a headline about a request is not a rate change until the tariff is approved with an effective date.
• Base rate versus total bill: percentages in rate cases usually describe base rates; total bills include usage, service charges, fees, and adjustments.
• Usage and time-of-use assumptions drive real bills: the same plan produces wildly different bills for different homes.
• Ask the seller for recent utility bills at the address, with the months noted, and compare like seasons.

No provider, plan, or rate in this guide is recommended or guaranteed. This is education, not a bill forecast, a savings promise, or an affordability claim. Every number above is dated to its source window and scope.