What electric space heating costs to run in Arizona
Arizona homes use 1,299 kWh a year on electric space heating. Priced on top of the rest of the bill, that costs $119.64 to $215.09 a year across 28 published Arizona plans — a $95.45 gap. Checked September 2, 2026.
Cheapest 25 of 28 priced plans, average
| Plan | Per year | vs cheapest | Effective |
|---|---|---|---|
| Residential Demand Time-of-Use TRRESDT - Single Phase✓ cheapesttime-of-use · demand charge | $119.64 | — | 11.0¢ |
| Residential Demand Time-of-Use TRRESDT - Three Phasetime-of-use · demand charge | $119.64 | — | 11.5¢ |
| Residential Service TOU Combined Advantage 7PM-Noon (ECT-2) [Frozen]time-of-use · demand charge · frozen | $119.97 | +$0.33 | 11.0¢ |
| Residential Service Peak Demand TRRESD (Single Phase)time-of-use · demand charge | $128.80 | +$9.16 | 11.7¢ |
| Residential Service Peak Demand TRRESD (Three Phase)time-of-use · demand charge | $128.80 | +$9.16 | 12.2¢ |
| Time Advantage 7pm to noontime-of-use | $129.18 | +$9.54 | 9.9¢ |
| Residential Service (Pilot Technology Rate) R-Techtime-of-use · demand charge · pilot programme | $130.54 | +$10.90 | 11.3¢ |
| Residential Service Standard (E-12) Low Incometime-of-use · tiered · low-income rate | $139.38 | +$19.74 | 10.1¢ |
| Residential Service (Saver Choice Plus)time-of-use · demand charge | $148.61 | +$28.97 | 12.6¢ |
| Residential Electric Service R-01 (Single Phase) Low Income Lifeline Programtime-of-use · tiered · low-income rate | $151.82 | +$32.18 | 10.6¢ |
| Residential Electric Service R-01 (Three Phase) Low Income Lifeline Programtime-of-use · tiered · low-income rate | $151.82 | +$32.18 | 11.0¢ |
| Time-of-Use 4pm-7pm Weekdays with Demand Charge (R-3)time-of-use · demand charge | $152.20 | +$32.56 | 12.9¢ |
| Special Residential Electric Service Time-of-Use Program TRRSPT - Single Phasetime-of-use · tiered | $169.04 | +$49.40 | 14.2¢ |
| Special Residential Electric Service Time-of-Use Program TRRSPT - Three Phasetime-of-use · tiered | $169.04 | +$49.40 | 14.7¢ |
| Residential Time-of-Use TRREST - Single Phasetime-of-use · tiered | $177.94 | +$58.30 | 14.9¢ |
| Residential Time-of-Use TRREST - Three Phasetime-of-use · tiered | $177.94 | +$58.30 | 15.4¢ |
| Special Residential Electric Service TRRSP - Three Phasetime-of-use · tiered | $187.10 | +$67.46 | 15.4¢ |
| Special Residential Electric Service TRRSP - Single Phasetime-of-use · tiered | $187.10 | +$67.46 | 14.9¢ |
| Residential Service TOU Time Advantage 7PM-Noon (ET-2) [Frozen]time-of-use · frozen | $198.12 | +$78.48 | 17.2¢ |
| Large Residential Service (Premier Choice Large) R-Basic L [Frozen]flat rate · frozen | $198.36 | +$78.72 | 17.0¢ |
| Residential Electric Service TRRES (Single Phase)time-of-use · tiered | $199.29 | +$79.65 | 15.9¢ |
| Residential Electric Service TRRES (Three Phase)time-of-use · tiered | $199.29 | +$79.65 | 16.3¢ |
| Residential Electric Vehicle Time-of-Use (R-EV)time-of-use · needs an electric vehicle | $208.87 | +$89.23 | 17.3¢ |
| Time-of-Use 4pm-7pm Weekdays (R-TOU-E)time-of-use | $215.09 | +$95.45 | 17.8¢ |
| Residential Service Standard (E-12) [Frozen]time-of-use · tiered · frozen | $215.52 | +$95.88 | 15.7¢ |
3 further schedules are published and priced but not listed here — mostly regional and seasonal variants of the plans above. The dearest of them costs $555.60 a year at this usage.
Cost across usage levels
The cheapest plan at each consumption level, showing whether the ranking holds as usage changes.
- Lighter use — cheapest $26.78 (Residential Demand Time-of-Use TRRESDT - Single Phase), dearest $48.20, a $21.42 spread
- Average — cheapest $119.64 (Residential Demand Time-of-Use TRRESDT - Single Phase), dearest $215.09, a $95.45 spread
- Heavier use — cheapest $145.75 (Residential Demand Time-of-Use TRRESDT - Single Phase), dearest $261.95, a $116.20 spread
What electric space heating costs here
Across 28 plans priced in Arizona, electric space heating adds $119.64 to $215.09 a year — $9.97 to $17.92 a month. The median plan puts electric space heating at $169.04 a year.
Cheapest for electric space heating: Residential Demand Time-of-Use TRRESDT - Single Phase, Tucson Electric Power Co. Dearest: Time-of-Use 4pm-7pm Weekdays (R-TOU-E), Arizona Public Service Co.
Those 1,299 kWh are billed at 9.2¢–16.6¢, against a 14.5¢ whole-bill average on the median plan: they land in the last tier the household reaches, so the average rate understates them by up to 2.1¢ per kWh.
What Arizona homes use
EIA's 2020 residential survey found 1,299 kWh a year across 284 sampled homes that run one, 48% under the national 2,484 kWh. The middle half spans 291 kWh to 1,582 kWh, so electric space heating varies by 1,291 kWh between one household and another.
All electricity used for space heating, including the furnace or heat-pump compressor and the air handler that moves the heat around the house. That average covers homes heated with electricity — 60% of homes here.
That makes electric space heating about 10% of the electricity an Arizona home uses. The remaining 12,304 kWh is what electric space heating is billed on top of, and on a tiered or time-of-use plan that is what sets the rate it meets.
By provider
On each Arizona provider's cheapest plan: Tucson Electric Power Co, $119.64; Arizona Public Service Co, $129.18.
Arizona Public Service Co charges $9.54 a year more than Tucson Electric Power Co on Residential Demand Time-of-Use TRRESDT - Single Phase for the same 1,299 kWh.
Light and heavy use of electric space heating
A household in the lighter quarter runs electric space heating for 291 kWh a year and pays $26.78 on the cheapest plan. One in the heavier quarter runs it for 1,582 kWh and pays $145.75 — $118.97 more for electric space heating on the same tariff.
Limits
A 2020 survey average for Arizona, not a measurement of any one home, priced against the 28 Arizona tariffs WattClear has ingested — not every plan sold there.
New to these terms? The methodology page explains tiered bands, time-of-use periods and fixed charges, and sets out exactly what the rate engine assumes.
Estimate — your actual bill may differ.
Tariff structures from NREL/OpenEI Utility Rate Database (CC0 1.0), retrieved September 2, 2026.
Location resolved through the US Census Bureau Geocoder (Public domain) at 32.2226, -110.9747.