Pinnacle West Capital

What Pinnacle West Capital does

Pinnacle West Capital Corporation is a publicly traded utility holding company (NYSE: PNW) headquartered in Phoenix, Arizona, that has operated in the state since 1886. Its principal and wholly owned subsidiary, Arizona Public Service Company (APS), is a rate-regulated, vertically integrated electric monopoly serving 1.5 million homes and businesses across 11 of Arizona's 15 counties and employing roughly 6,456 people on average in 2025. APS generates, transmits, and distributes electricity under rates set by the Arizona Corporation Commission.

The company's generation fleet is unusually diversified for a mid-sized US utility: APS co-owns Palo Verde Nuclear Generating Station (the nation's largest nuclear plant) and operates Four Corners coal, Cholla Power Plant (now transitioning off coal), and a portfolio of natural gas, solar, wind, and battery storage assets. Total energy throughput reached 40,423,000 MWh in 2025 (up from 38,833,000 MWh in 2024), with 2,408,212 MWh sourced from renewables. The Cholla site is being repurposed from coal to natural gas (~380 MW) with operations expected to begin in 2029, replacing retired coal capacity with a regulated asset still eligible for rate base recovery.

Economically, Pinnacle West earns recurring revenue through regulated electricity sales, demand-side management programs ($82.6M invested in 2025, delivering 537,486 MWh of efficiency savings), and the Energy Support Program for limited-income customers. FY2025 net income attributable to common shareholders was $616.5M versus $608.8M in FY2024, driven by customer growth (2.4% in 2025), weather-normalized retail sales growth of 5.0%, higher transmission revenues, and impacts of the 2022 rate case. Management projects 5–7% annual sales growth through 2030 from large commercial and manufacturing additions. The company carries no SaaS, API, or AI products; it is a traditional regulated utility whose growth is gated by the cadence of Arizona Corporation Commission rate case outcomes.

Name

Pinnacle West Capital

Legal name

Pinnacle West Capital Corporation

Website

https://pinnaclewest.com

Company type

Public

Founded year

1886

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

Pinnacle West Capital Corporation is the Phoenix-based parent (NYSE: PNW) of Arizona Public Service Company, a rate-regulated electric utility serving 1.5 million homes and businesses across 11 Arizona counties via a diversified nuclear, gas, solar, wind, and storage generation fleet.

Ownership category

akta.pro rank

Headquarters

HQ city

Phoenix

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Infrastructure, Operations, Personnel, Supply Chain, Others

Revenue model

1. Regulated Electricity Sales: Revenue generated from electricity generation, transmission, and distribution services to 1.5 million residential and business customers across Arizona through regulated utility subsidiary APS. Operates as a rate-regulated monopoly under Arizona Corporation Commission oversight.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Pinnacle West Capital, through its principal subsidiary Arizona Public Service Company (APS), generates, transmits, and distributes regulated electricity to approximately 1.5 million homes and businesses across 11 of Arizona's 15 counties. The company operates a diversified generation portfolio including the co-owned Palo Verde Nuclear Generating Station, natural gas, coal, solar, wind, and battery storage, and supplements its core electricity service with demand-side energy efficiency programs and bill-assistance offerings for limited-income customers.

Product overview

Pinnacle West Capital Corporation is a utility holding company with Arizona Public Service (APS) as its principal subsidiary. APS is a vertically integrated electric utility providing generation, transmission, and distribution services to 1.5 million customers across Arizona. The company operates a diverse generation portfolio including nuclear (Palo Verde Nuclear Generating Station), natural gas, coal, solar, wind, and battery storage. APS offers customer-facing programs including energy efficiency/demand-side management programs and the Energy Support Program for limited-income customers. The company also maintains El Dorado Investment Company as a subsidiary. This is a traditional utility company with no software-as-a-service products, APIs, or AI-powered technology products.

Differentiator

Problem solved

Functional benefit

Brands

• APS (Arizona Public Service): Primary subsidiary and brand providing electricity generation, transmission and distribution services to customers in Arizona.

Quantifiable outcome

• 2.4% customer growth in 2025 with projected 1.5-2.5% annual growth through 2030
• +5 more outcomes

Named customers1 record

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Four partnerships are on record, tiered minor, core and strategic.

• Edison Electric InstituteminorOthersTrade association representing U.S. investor-owned electric companies. Pinnacle West/APS participates in EEI's environmental, social, and governance reporting template and industry initiatives.
• Nuclear Energy InstituteminorOthersIndustry association providing unified voice on nuclear energy importance and technology. APS operates Palo Verde Nuclear Generating Station.
• Arizona Corporation CommissioncoreOthersState regulatory body for public utilities in Arizona, including energy. Sets electricity rates and oversees utility operations.
• Salt River Project (SRP) and Tucson Electric Power (TEP)strategicStrategic or Co-development PartnerAPS, SRP and TEP continue new nuclear exploration for Arizona as part of the state's energy future planning. Joint exploration of nuclear energy options.

Scale indicators10 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Southern Company: Vertically integrated regulated electric utility holding company with multiple state subsidiaries operating nuclear, natural gas, coal, and renewable generation. Direct comparable to PNW's vertically integrated utility holding structure.
• NextEra Energy: Largest US electric utility holding company with vertically integrated FPL operations and NextEra Energy Resources. Comparable as a publicly traded regulated utility with diversified generation including nuclear, natural gas, solar, and wind, serving millions of customers.
• American Electric Power: Vertically integrated regulated electric utility serving customers across multiple US states with one of the largest transmission networks in the country. Comparable diversified generation portfolio and regulated utility business model.
• Xcel Energy: Vertically integrated regulated electric and natural gas utility serving customers across multiple US states with significant nuclear, wind, and solar generation. Comparable as a regulated utility with aggressive clean energy transition strategy.
• Public Service Enterprise Group: New Jersey-based regulated electric utility and nuclear generation holding company operating Public Service Electric & Gas. Comparable vertically integrated utility with significant nuclear generation assets similar to APS's Palo Verde ownership.
• WEC Energy Group: Regulated electric and natural gas utility holding company serving Wisconsin, Illinois, Minnesota, and Michigan. Comparable as a publicly traded utility holding company with regulated rate base growth strategy.
• DTE Energy: Vertically integrated regulated electric and natural gas utility serving Michigan customers with nuclear, coal, natural gas, and renewable generation. Comparable utility holding company structure with regulated rate base.
• Edison International: California-based regulated electric utility holding company operating Southern California Edison. Comparable vertically integrated utility model with diverse generation and regulatory rate case framework similar to APS.
• Duke Energy: Vertically integrated regulated electric utility serving customers across the Southeast and Midwest with diversified nuclear, natural gas, coal, and renewable generation. Closely comparable business model and regulatory structure to PNW's APS.
• Dominion Energy: Vertically integrated regulated electric utility serving customers across Virginia, the Carolinas, and Utah. Comparable business model with diversified generation including nuclear and significant renewable energy investments.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/arizonapublicservice/featured
• LinkedInlinkedin.com/company/pinnacle-west-capital-corporation

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries2 records

Funding overview

Funding rounds3 records

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Pinnacle West Capital