1
2025 general rate case
Arizona Public Service, AZ
+$26a month, est.
Southwest Gas Arizona general rate case
Pending Base rate case, natural gas, docket G-01551A-26-0018 before the Arizona Corporation Commission.
+$5a month
on a typical bill, if approved as asked
As published by the utility or the commission.
What happens next
Next comes a hearing on December 7, 2026, 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
$
FiledFeb 27, 2026
HearingDec 7, 2026
Decisionpending
On billsafter the decision
Southwest Gas filed a general rate case with the Arizona Corporation Commission on February 27, 2026 seeking 101 million dollars more in annual revenue, a 10.69 percent increase, and a higher authorized return on equity of 10.25 percent, up from 9.47 percent. As filed, this would add about 5.18 dollars a month to a typical residential bill using 24 therms a month. Telephonic public comment sessions are set for October and November 2026, with an in-person hearing at the Commission's Phoenix offices on December 7, 2026; nothing has been decided yet.
What it means for your bill: If approved as filed, this would add about 5.18 dollars a month to a typical Southwest Gas Arizona bill; the case is still pending and public comment sessions are ongoing.
- Status
- Pending
- Utility
- Southwest Gas
- Commission
- Arizona Corporation Commission
- Docket
- G-01551A-26-0018
- Filed
- February 27, 2026
- Requested
- 10.7% residential, $101 million a year
- Typical bill change
- +$5.18 a month
- Next hearing
- December 7, 2026
- Last checked
- October 20, 2026
Common questions
How much will my Southwest Gas bill go up?
Would add about $5 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?
December 7, 2026.
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.
History
- Oct 20, 2026: Added as pending
Sources
- Southwest Gas proposes a $101 million rate increase in Arizona, Energy and Policy Institute, 2026-10-13
- Invested in Arizona, Southwest Gas, 2026-10-20
Get an email when this changes
One email when a rate case is filed, gets a hearing date, or is decided for Southwest Gas. Nothing else.
Unsubscribe with one click. We do not sell the list.
Other pending cases in Arizona
2
2026 general rate case
Tucson Electric Power, AZ
+$13a month
3
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