20251106Final_Order_No_36836.pdf

Office of the Secretary
Service Date
November 6,2025
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
IN THE MATTER OF THE INTEREST RATE ) CASE NO. GNR-U-25-01
ON DEPOSITS COLLECTED FROM )
CUSTOMERS OF GAS, ELECTRIC, )
TELEPHONE,AND WATER PUBLIC ) ORDER NO. 36836
UTILITIES FOR CALENDAR YEAR 2026 )
The Commission's Customer Relations Rules for Gas,Electric and Water Utilities(IDAPA
31.21.01.106)and the Customer Relations Rules for Telephone Companies(IDAPA 31.41.01.104)
require utilities to pay interest on customer deposits. To determine the interest rate, the
Commission calculates the 12-month average interest rate for one-year treasury bills for the
previous November 1 through October 31, rounded to the nearest whole percent. Public utilities
must pay interest on customer deposits during the next calendar year at the rate determined by the
applicable Commission rules.
Using the weekly rates as posted by the U.S. Department of the Treasury, the average
interest rate for one-year treasury bills for the 12-month period from November 1, 2024, through
October 31, 2025, is 4.03%. Accordingly, public utilities must pay 4.0% annual interest on all
customer deposits for calendar year 2026. This interest rate is 1.0% lower than the rate paid in
2025. See Order No. 3 63 90.
ORDER
IT IS HEREBY ORDERED that 4.0% annual interest shall be paid during calendar year
2026 on customer deposits held by gas, electric, water, and telephone companies subject to this
Commission's jurisdiction under IDAPA 31.21.01.106 and 31.41.01.104. The Commission
Secretary shall serve this Order upon all public utilities operating within Idaho.
IT IS FURTHER ORDERED that the rate on deferred accounts using the customer deposit
rate during calendar year 2026 shall be 4.0%.
THIS IS A FINAL ORDER. Any person interested in this Order may petition for
reconsideration within twenty-one (21) days of the service date of this Order. Within seven (7)
days after any person has petitioned for reconsideration, any other person may cross-petition for
reconsideration. See Idaho Code §§ 61-626 and 62-619.
ORDER NO. 36836 1

DONE by Order of the Idaho Public Utilities Commission at Boise, Idaho this 61h day of
November 2025.
G
DWARD LODGE, RE I ENT
HN R HAMMOND JR., COMMISSIONER
xI
DAYN HARDI , COM SSIONER
ATTEST:
L"56a Calderon Robles
Interim Commission Secretary
I:\Legal\MULTI-UTILITY\GNRU2501_final jl.docx
ORDER NO. 36836 2