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Tariff data · 2026-08-26
Tucson Electric Power Co · AZ

Special Residential Electric Service TRRSP - Single Phase

When does peak hit on Tucson Electric Power Co’s Special Residential Electric Service TRRSP - Single Phase? The hour never matters here — only the season. Rates peak May–September.

  • peak11.86¢
  • off-peak11.54¢
Weekdays
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Weekends
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

What does Special Residential Electric Service TRRSP - Single Phase cost a year?

HouseholdUsesPer yearWorks out to
Apartment

One or two people, no central air, no electric heat

4,866 kWh$84917.4¢ / kWh
Family home

Three or four people with central air conditioning

9,453 kWh$1,45715.4¢ / kWh
Home with an EV

Same house, plus an electric car charging overnight

13,103 kWh$1,96515.0¢ / kWh

Estimates, not quotes. We run three made-up but realistic households through this tariff hour by hour for a full year — including the way air conditioning loads the afternoon and an EV loads the small hours. Your own bill depends on when you actually use electricity, which is exactly the thing a per-kWh number hides.

What you actually pay

PeriodRateApplies when
peak11.86¢ up to 500 kWh13.85¢ up to 1000 kWh14.59¢midnight–midnight, May–September
off-peak11.54¢ up to 500 kWh13.53¢ up to 1000 kWh14.26¢midnight–midnight, October–April

Plus a fixed charge of $23.44 per month.

Should you be on Special Residential Electric Service TRRSP - Single Phase?

The hour of day does not change what you pay here — the month does. Running the same house through the full year, July costs about $166 and February about $94. That $72 swing is part rate and part weather, and it is the reason a budget built on your spring bill will break in July.

There is a usage cliff to watch. The first 500 kWh each month are billed at 11.5¢; past that line the rate steps up to 13.5¢ — 17% more for every unit after. The last kilowatt-hour of a heavy month is the expensive one, which is why cutting a little off a big month saves more than cutting the same amount off a small one.

Before a single kilowatt-hour moves, this plan charges $281 a year in fixed fees. On the apartment above that is 33% of the whole bill; on the house with a car charging in it, 14%. Fixed charges are invisible in a cents-per-kWh comparison and they punish small users hardest — if you use very little electricity, the headline rate is the least important number on this page.

How it compares to Tucson Electric Power’s other plans

Measured against the other residential plans this utility files, a family home lands 6th cheapest of 12. The cheapest option, Residential Demand Time-of-Use TRRESDT - Single Phase, would run about $461 a year less.

Against Residential Electric Service TRRES (Single Phase), which looks like the plan you land on by default, this one comes out $90 less per year (6%). We infer the default from the tariff structure rather than a flag in the data, so confirm it against your own bill before you switch.

If this is new to you

Where this comes from

Effective
2025-09-30

the date this tariff took effect

Covers
delivery + supply

우편번호 매핑에서 이 지역 서비스 종류가 Bundled — 배달과 공급을 함께 판다

Enrollment
open to new customers

Tariff document: https://docs.tep.com/wp-content/uploads/105-TRRSP.pdf