This is a service contract, not a residential rate change. The protections in it exist to keep the cost of serving the data center from shifting onto Tucson homes; whether they hold is the thing to watch in TEP's future rate cases.
no figure yet
Tucson Electric Power, Arizona
2026 general rate case
Pending Base rate case, docket E-01933A-25-0103 before the Arizona Corporation Commission.
+$13a month
on a typical bill, if approved as asked
As published by the utility or the commission.
What happens next
Next comes a hearing, then a decision from the Arizona Corporation Commission. Many states give the commission a deadline of roughly seven to eleven months from filing. How rate cases work.
What it means for your bill
$
Fileddate not published
Hearingnot scheduled yet
Decisionpending
On billsafter the decision
TEP is asking for about 11.6 percent more on residential bills, roughly 12.92 dollars a month at median usage. The attorney general's office argued in testimony that only about a 4 percent increase is justified. TEP says this case is unrelated to the Project Blue data center agreement; a decision could come before the end of 2026.
- Status
- Pending
- Utility
- Tucson Electric Power
- Commission
- Arizona Corporation Commission
- Docket
- E-01933A-25-0103
- Requested
- 11.6% residential
- Typical bill change
- +$12.92 a month
- Last checked
- August 29, 2026
Common questions
How much will my Tucson Electric Power bill go up?
Would add about $13 a month on a typical bill. As published by the utility or the commission.
When would the new rates start?
Not yet set. That is decided along with the case, usually as part of the commission's final order.
When is the hearing?
Not scheduled yet. Check back, or ask for an email alert below.
How do I comment?
The Arizona Corporation Commission accepts written comments on the docket while the case is open, and holds public hearings on major cases. Commission site.
How to comment
The Arizona Corporation Commission accepts written comments on the docket while the case is open, and holds public hearings on major cases. Commission site. Residential Utility Consumer Office represents households in this case.
Sources
- TEP 2026 Rate Review, Tucson Electric Power, 2026-08-19
- TEP Rate Case Timeline Update, Arizona Corporation Commission, 2026-02-17
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Other Tucson Electric Power matters
Other pending cases in Arizona
1
2025 general rate case
Arizona Public Service, AZ
+$26a month, est.
2
First annual rate adjustment mechanism filing
UNS Gas, AZ
This is a smaller, recurring infrastructure charge, not a full base rate case; it would add about 2.25 dollars a month to a typical UNS Gas bill if approved.
+$2a month