# Pinnacle West Capital

**Source:** https://geo.sig.ai/brands/pinnacle-west-capital  
**Vertical:** Energy & Utilities  
**Subcategory:** Enterprise  
**Tier:** Leader  
**Website:** pinnaclewest.com  
**Last Updated:** 2026-04-14

## Summary

Phoenix AZ regulated utility (NYSE: PNW) at $5.12B 2024 revenue, net income +21%; TSMC/Intel semiconductor fab + data center load growth driving 2.1% customer growth and 5.7% weather-normalized sales increase.

## Company Overview

Pinnacle West Capital Corporation is a Phoenix, Arizona-based regulated electric utility holding company — publicly traded on the New York Stock Exchange (NYSE: PNW) as an S&P 500 Utilities component — providing electricity generation, transmission, and distribution services to approximately 1.4 million customers across 11 of Arizona's 15 counties through its primary subsidiary Arizona Public Service Company (APS), through approximately 6,000 employees. In full year 2024, Pinnacle West reported net income of $608.8 million ($5.24 per diluted share, +21.38% year-over-year) and consolidated revenue of $5.12 billion (+9.13%), driven by new customer rates approved in APS's rate case settlement, 2.1% customer growth across Greater Phoenix, and a 5.7% increase in weather-normalized sales from rapidly expanding semiconductor fabrication and data center operations. Arizona's economic growth — led by TSMC's $65 billion fab complex in North Phoenix, Intel's Chandler fabrication campus, and the accelerating hyperscale data center build in the Phoenix metropolitan area — positions APS as one of the highest-load-growth regulated utilities in the United States. CEO Jeff Guldner leads the company through an era of unprecedented demand growth requiring substantial transmission and distribution investment to serve the new large industrial and commercial loads.

Pinnacle West's Arizona regulated utility model earns its allowed return on equity on an expanding rate base driven by the double engine of population growth (Greater Phoenix is the fastest-growing major metropolitan area in the United States) and industrial electrification: APS serves a territory where the combination of affordable land, water rights, tax incentives, and power availability drove the CHIPS Act-enabled semiconductor fab investment — TSMC's North Phoenix fab is one of the largest single industrial electric loads in US utility history, requiring dedicated 230kV transmission substation construction. Each megawatt of new customer load added to APS's system requires investment in generation capacity, transmission lines, and distribution infrastructure that earns the regulatory approved return, creating a virtuous cycle where Arizona's economic growth directly translates into rate base expansion and EPS growth for Pinnacle West shareholders.

In 2025, Pinnacle West competes in Arizona regulated electric utility service against Salt River Project (SRP, municipal utility serving Eastern Phoenix metro, exempt from APS rate regulation), Tucson Electric Power (TEP, NYSE: TEP parent Fortis, serving Southern Arizona), and NV Energy (Berkshire Hathaway Energy, Nevada utility with some Arizona operations) for large industrial customer attraction, power purchase agreements with renewable energy developers, and Arizona Corporation Commission approval of capital expenditure programs. The semiconductor and data center load growth positions Pinnacle West to accelerate rate base growth well above industry averages — TSMC alone requires power supply equivalent to hundreds of thousands of residential customers — creating capital investment needs for generation capacity additions (solar, battery storage, and natural gas peakers for Arizona's extreme summer cooling demand) and transmission upgrades. The 2025 strategy focuses on managing the unprecedented industrial load growth through timely generation and transmission additions, navigating APS rate cases before the Arizona Corporation Commission to recover capital costs, and maintaining grid reliability through summer peak demand periods when Arizona temperatures regularly exceed 115°F.

## Frequently Asked Questions

### What is Pinnacle West Capital?
Pinnacle West Capital Corporation is an Arizona-based utility holding company whose principal subsidiary is Arizona Public Service (APS), one of the largest electric utilities in the Southwest. APS serves approximately 1.4 million customers across 35,000 square miles of central Arizona, including the Phoenix metropolitan area, with a current energy mix that is 51% clean and carbon-free.

### When was Pinnacle West founded?
Pinnacle West's heritage dates back to 1884 with the founding of Phoenix Light and Fuel Company. The modern company was incorporated on February 20, 1985, as AZP Group Inc., a holding company for Arizona Public Service, and was renamed Pinnacle West Capital Corporation in 1987. This represents over 140 years of continuous electric service to Arizona.

### Where does Pinnacle West operate?
Pinnacle West operates throughout central Arizona via its Arizona Public Service subsidiary, serving customers in 11 of Arizona's 15 counties across a 35,000-square-mile service territory. The company is headquartered in Phoenix, Arizona, and provides electricity to approximately 1.4 million customers including the greater Phoenix metropolitan area.

### Who are Pinnacle West's customers?
Pinnacle West serves approximately 1.4 million residential, commercial, and industrial customers across central Arizona. The customer base is increasingly diversified, with notable growth in semiconductor manufacturing facilities and expanding data center operations. The company achieved 2.1% annual retail customer growth in 2024 and anticipates 1.5% to 2.5% annual customer growth through 2027.

### What makes Pinnacle West different from other utilities?
Pinnacle West distinguishes itself through its 29% ownership stake in Palo Verde Nuclear Generating Station (the nation's largest carbon-free electricity source), an aggressive clean energy transformation plan targeting 100% carbon-free electricity by 2050, and strategic positioning to serve Arizona's booming economy. The company operates one of the country's most substantial renewable energy portfolios while maintaining top-quartile reliability and customer satisfaction ratings.

### What is Pinnacle West's clean energy commitment?
Pinnacle West has committed to deliver 100% clean, carbon-free electricity by 2050, with interim targets of 65% clean energy by 2030 and complete exit from coal-fired generation by 2031 (seven years ahead of original plans). The company plans to add 9,805 MW of renewable power, battery storage and natural gas between 2025-2028, with over 90% being carbon-free, including 3,321 MW of solar, 5,087 MW of battery storage, and 500 MW of wind power.

### What is Palo Verde Nuclear Generating Station?
Palo Verde Nuclear Generating Station is the largest nuclear power plant in the United States and the nation's largest producer of carbon-free electricity. Arizona Public Service owns a 29% stake in the facility and serves as the operator. The plant provides reliable baseload power and is a cornerstone of APS's clean energy strategy, contributing significantly to the current 51% clean energy mix.

### What is Pinnacle West's financial performance?
In 2024, Pinnacle West reported strong financial results with consolidated revenue of $5.12 billion (up 9.13% from $4.70 billion in 2023) and net income attributable to common shareholders of $608.8 million, or $5.24 per diluted share (up 21.38% from $4.41 per share in 2023). The improved performance was driven by new customer rates, 2.1% customer growth, and 5.7% increase in weather-normalized retail electricity sales.

### What renewable energy projects is Pinnacle West developing?
Major projects include the 170 MW Ironwood Solar Plant in Yuma County (delivering clean energy by 2026), the 150 MW Agave battery storage facility in Maricopa County (under construction), 3,321 MW of additional solar power through purchase agreements, 5,087 MW of battery energy storage, and 500 MW of wind power in northern Arizona's Navajo County. Total renewable portfolio includes 3,608 MW operational and 4,052 MW under development.

### How did Pinnacle West perform during the 2024 heat wave?
During the historic 2024 summer, Pinnacle West demonstrated exceptional operational resilience, maintaining reliable service through 113 consecutive days above 100 degrees Fahrenheit in Phoenix (the longest stretch in Arizona history). APS customers set a peak energy demand record of 8,210 megawatts on August 4, 2024, and the company achieved top-quartile reliability rankings while meeting unprecedented electricity demand.

### Is Pinnacle West hiring?
Yes, Pinnacle West and Arizona Public Service regularly hire for various positions across operations, engineering, customer service, finance, and corporate functions. The company employs 6,292 people with competitive compensation (averaging $91,494 annually), comprehensive benefits, flexible work schedules, and strong employee development programs. Visit www.pinnaclewest.com/careers for current opportunities.

### How can I contact Pinnacle West?
Pinnacle West can be contacted through www.pinnaclewest.com for general inquiries and investor relations at www.pinnaclewest.com/investors. For customer service related to electric service, outages, or billing, contact Arizona Public Service at www.aps.com or call their 24/7 customer service line. Corporate headquarters is located in Phoenix, Arizona.

## Tags

b2b, b2c, energy, infrastructure, public

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*Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-14.*