# Arizona Public Service - APS

> Arizona Public Service is an investor-owned electric utility and the principal subsidiary of Pinnacle West Capital Corporation. It generates, buys, transmits and distributes electricity to nearly 1.5 million homes and businesses across 11 Arizona counties. Its distinctive mix includes Palo Verde nuclear generation, renewables, batteries, gas, coal and customer demand-response programs.

- **Founded:** 1886
- **Headquarters:** Phoenix, United States
- **Founders:** Hachiro Onuki (later Hutchlon Ohnick) (Founder of predecessor Phoenix Illuminating Gas and Electric Company), W. C. Parsons (Co-founder and backer of predecessor company), Josiah White (Co-founder and backer of predecessor company)
- **Products:** Electricity generation and delivery, Time-of-Use 4pm-7pm Weekdays, Cool Rewards, Energy Support, APS Marketplace
- **Notable:** Reached nearly 1.5 million customer accounts by 2026., Met preliminary record demand of 9,164 MW during 6-7 p.m. on August 2, 2026, according to APS., Operates Palo Verde, which uses recycled municipal wastewater for cooling.

## Products & services

- **Electricity generation and delivery** — Regulated electricity service for residential, commercial and industrial customers; generation, transmission, distribution and purchased power.
- **Time-of-Use 4pm-7pm Weekdays** — Residential plan with higher weekday energy prices from 4 to 7 p.m. and lower off-peak prices; separate demand-charge plan also available.
- **Cool Rewards** — Opt-in smart-thermostat demand response with bill credits and customer override.
- **Energy Support** — Income-qualified bill discounts of 25% or 60%, subject to monthly caps and eligibility; medical variant also offered.
- **APS Marketplace** — Energy-efficient products including smart thermostats and EV charging equipment, operated with Resource Innovations.
- **Business and construction services** — Business rate plans, efficiency programs, new-service connections, landlord services and power-line siting support.

## Achievements

- Reached nearly 1.5 million customer accounts by 2026.
- Met preliminary record demand of 9,164 MW during 6-7 p.m. on August 2, 2026, according to APS.
- Operates Palo Verde, which uses recycled municipal wastewater for cooling.
- Reported 2.4% customer growth and 5.0% weather-normalized retail sales growth in 2025.

## Latest updates

- **2026-10** — Announced more than $33 million in automatic November bill credits, about $14 for a typical residential customer.
- **2026-10** — Outlined plans to operate Four Corners beyond 2031; lease permits operation through 2038 and future decisions remain subject to planning.
- **2026-08** — Reported preliminary peak demand of 9,164 MW on August 2.
- **2026-07** — Regulator said APS rate-case hearings had concluded; if approved, new rates were expected in early 2027.
- **2026-06** — APS, SRP and TEP confirmed nuclear siting work continues despite not receiving their requested DOE grant.
- **2026-04** — Announced $7 million disconnection-practices settlement funded by shareholders, including restoration of a 95°F heat hold outside the summer moratorium.
- **2025-08** — Changed its 2050 clean-energy aspiration from zero-carbon to carbon-neutral, allowing for offsets of remaining emissions.

## Links

- Website: https://www.aps.com/
- LinkedIn: https://www.linkedin.com/company/arizona-public-service-aps-
- Twitter/X: https://x.com/apsfyi
- YouTube: https://www.youtube.com/user/arizonapublicservice
- Instagram: https://www.instagram.com/apsfyi/
- Facebook: https://www.facebook.com/apsfyi

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Profile page: https://yespress.io/arizona-public-service-aps
Published by YesPress — https://yespress.io
Last updated: 2026-10-23