Tucson Electric Seeks 9.8% Rate Increase
Regulators are weighing a request that would raise the average residential monthly bill by about $13.50.
Updated on Nov. 3, 2026 in Utilities
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Tucson Electric Power has requested a 9.8% rate increase, which would raise the average residential customer's monthly bill by about $13.50 if approved. Administrative law judge Julia L. Matter recommended an estimated 9.4% increase, with recommended bill impacts of about $12.93 a month.
Why it matters
The increase would affect household utility costs for Tucson residents and is being evaluated through a rate case before the Arizona Corporation Commission. The Residential Utility Consumer Office has challenged the recommendations, citing affordability concerns and arguing for lower percentage increases.
The requested 9.8% increase compares with a judge's recommended 9.4%, and the utility's earlier application last year sought 14%. Regulators have not yet ruled, and the consumer advocate's challenge to the Annual Rate Adjustment Mechanism remains unresolved.
The players
Tucson Electric Power
Tucson Electric Power is the electric utility serving Tucson and surrounding areas in southern Arizona.
Arizona Corporation Commission
The Arizona Corporation Commission is the state body that regulates utilities and approves rate changes for Arizona consumers.
Residential Utility Consumer Office
The Residential Utility Consumer Office is a state agency that advocates on behalf of residential utility customers in Arizona.
The details
Tucson Electric Power requested an 11.2% bill increase in July after earlier lowering its proposed increase to a little more than 12.5%. The utility also requested more than $1 million for rate case expense, and administrative law judge Julia L. Matter supports its request for an Annual Rate Adjustment Mechanism that would update rates every year.
Timeline
Last year: Tucson Electric Power applied for a 14% rate increase with the Arizona Corporation Commission.
Several months before July: The utility lowered its proposed increase to about 12.5%.
July: Tucson Electric Power requested an 11.2% bill increase.
Last month: Judge Matter's recommended opinion was filed.
Nov. 17: Regulators will hold an open meeting on the judge's recommendations.
Roadmap
The request follows the Arizona Corporation Commission's established rate case process for investor-owned utilities, in which a judge's recommendation precedes a commission vote. The proposed Annual Rate Adjustment Mechanism would, if authorized, shift Tucson Electric Power toward yearly rate updates rather than periodic full rate cases.
If approved as requested, the average Tucson residential customer would see a monthly bill increase of about $13.50. The judge's recommendation would add about $12.93 a month, so the final increase will depend on the Commission's decision.
The takeaway
Residential customers can follow the Nov. 17 Corporation Commission meeting to see how the final rate decision compares with the requested and recommended figures. Watching how the Annual Rate Adjustment Mechanism is handled may also indicate how future bills will change.
What happens next
Regulators are scheduled to hold an open meeting on Nov. 17 to consider the judge's recommendations on Tucson Electric Power's rate request.
Further reading
For related coverage, see Utilities in the Tucson business section.
Source note: This article includes information reported by Arizona Public Media.
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