10-K: Pinnacle West Reports 2025 Net Income Growth Amidst Strategic Energy Transition

Pinnacle West Capital Corporation reported an increase in 2025 net income, driven by customer growth and strategic investments in clean energy and grid modernization.

Summary

• Pinnacle West's consolidated net income attributable to common shareholders increased by $8 million to $617 million in 2025, up from $609 million in 2024.
• Operating revenues increased by $215 million to $5,340 million in 2025, compared to $5,125 million in 2024.
• Retail electric revenues, which constitute 95% of total operating revenue, saw an increase of $95 million due to changes in usage patterns, customer growth, and related pricing, partially offset by energy efficiency impacts.
• Customer growth in APS's service territory was 2.4% in 2025, with annual retail electricity sales (weather-adjusted) increasing by 5.0%.
• APS filed a 2025 Rate Case application on June 13, 2025, seeking a net base rate increase of $579.5 million (13.99% net increase), with a proposed original cost rate base of $12.5 billion and a weighted-average cost of capital of 7.63%.
• The company aims for carbon-neutrality by 2050, with 58% of its 2025 energy supply derived from clean resources (nuclear, renewables, DSM, and clean PPAs).
• Capital expenditures are projected to be $2,600 million in 2026, $2,650 million in 2027, and $2,700 million in 2028, focusing on generation, transmission, and distribution.
• APS plans to add up to 2,000 MW of flexible natural gas generation to its portfolio and has secured a long-term gas transportation agreement expected to be operational by late 2029.
• Pinnacle West's common equity ratio was approximately 60% and APS's was 50% as of December 31, 2025, both within the 65% maximum debt to capitalization covenant.
• APS acquired two of three leased interests in Palo Verde Unit 2 in September 2025 for approximately $199 million, increasing its total ownership interest to 23.9% in Unit 2.
• The company is actively involved in litigation challenging EPA's carbon emission standards for power plants and is evaluating the financial impacts of new CCRMU regulations.
• Pinnacle West's ATM Program has approximately $700 million of common stock available for issuance, taking into account forward sale agreements in effect as of December 31, 2025.
• The company's pension plan was 98% funded on a projected benefit obligation basis at December 31, 2025.

Sentiment

Score: 7

Explanation: StockSavvy.ai views this as a moderately positive filing, reflecting solid financial growth and strategic progress in energy transition and infrastructure, despite ongoing regulatory uncertainties and cost pressures.

Positives

• Consolidated net income attributable to common shareholders increased by $8 million to $617 million in 2025.
• Operating revenues increased by $215 million in 2025, reflecting strong performance.
• Retail customer growth of 2.4% and weather-adjusted retail electricity sales growth of 5.0% in 2025 indicate a healthy demand environment.
• Successful participation in the Western Energy Imbalance Market (WEIM) is expected to lower fuel and purchased-power costs and improve system operations.
• APS was selected by the DOE's Grid Deployment Office to receive up to $70 million in federal funding for fire mitigation and grid infrastructure projects.
• A new gas transportation precedent agreement was executed in July 2025 to secure long-term natural gas supply, expected to be operational by late 2029.
• The company's common equity ratio and debt to capitalization ratios are within covenant limits, indicating financial stability.
• The 2022 Rate Case approved a $491.7 million increase in annual base revenue requirement and a 9.55% return on equity for APS.
• Palo Verde, a major carbon-free energy resource, continues to be a foundational part of APS's portfolio, generating over 32 million MWh.
• The Cross-Tie transmission project, a 500-kV line connecting Utah and Nevada, received a Record of Decision permitting its development in December 2025, enhancing grid reliability.
• The company's Employee Experience Index was 86% in 2025, reflecting strong employee engagement and culture.

Negatives

• Higher interest charges, net of AFUDC, increased by $45 million in 2025, primarily due to higher debt balances.
• Pension and other postretirement non-service credits, net, were $37 million lower in 2025, mainly due to prior-service credits becoming fully amortized.
• Depreciation and amortization expenses increased by $20 million in 2025, primarily due to increased plant additions and intangible assets.
• The effects of extreme heat during the summer of 2024 negatively impacted results, partially offsetting positive factors in 2025.
• Inflation has significantly impacted the cost of goods and services, with the CPI-U rising 32.1% in Phoenix from 2018-2024, although APS's residential rates rose less (16.2%).
• The OBBBA, signed July 4, 2025, curtailed several clean energy tax credits, potentially impacting future project eligibility.
• The company faces potential price increases due to current and proposed tariffs and supply chain constraints.
• The ACC voted to reduce the budget of the Demand Side Management (DSM) program to $40 million and discontinue several programs and customer rebates in December 2025.
• The ACC voted to send full repeals of the Renewable Energy Standard (RES) and Electric Energy Efficiency Standards (EES) rules to the Secretary of State for publication in August and September 2025, creating regulatory uncertainty.

Risks

• Ability to achieve timely and adequate rate recovery of costs through regulated rates and adjustor mechanisms.
• Impacts of federal, state, and local laws, judicial decisions, statutes, regulations, and agency requirements, including changes related to tax, environment, energy, nuclear plants, and deregulation.
• Substantial regulatory oversight and potentially significant liabilities and capital expenditures related to Palo Verde nuclear plant operations.
• Increased costs and business impact from numerous environmental laws and changes to existing or new laws, including those related to GHG emissions, CCR disposal, effluent limitations, and ozone NAAQS.
• Potential financial risks from climate change litigation and legislative/regulatory efforts to limit GHG emissions.
• Physical and operational risks related to climate effects, such as weather extremes (drought, high temperatures), wildfires, and water supply limitations.
• Unaligned goals and positions among co-owners of jointly owned generation and transmission facilities, potentially impacting operations.
• Increased competition from deregulation of the electric industry and large customers developing their own generation facilities.
• Adverse effects on results of operations from factors impacting electricity demand, including weather, energy conservation, and distributed energy resources.
• Difficulty in forecasting load growth, particularly from high load energy users like data centers and AI, potentially leading to stranded costs or inability to provide timely service.
• Insufficient wildfire mitigation efforts leading to damages, claims, credit rating downgrades, and reputational harm.
• Risks in operating power generation and transmission systems, including equipment breakdown, fuel interruption, unscheduled outages, and physical security threats.
• Inability to successfully develop, acquire, or operate generation and transmission facilities to meet future resource needs and load forecasts.
• Opposition from environmental advocacy groups to fossil fuel infrastructure projects, impacting future development.
• Lack of access to sufficient water supplies for generating plants due to drought conditions and conflicting claims.
• Cybersecurity threats, IT system vulnerabilities, and unauthorized access to systems, potentially causing disruptions, data breaches, and financial losses.
• Inherent risks in nuclear facility ownership and operation, including spent fuel disposal uncertainty and potential liabilities from nuclear incidents.
• Challenges from changes in technology, such as alternative energy, energy storage, and artificial intelligence, impacting existing business models and operations.
• Employee workforce factors, including availability and retention of qualified personnel and collective bargaining agreement negotiations.
• Credit rating downgrades affecting access to capital and borrowing costs.
• Investment performance of benefit plan assets, nuclear decommissioning trust funds, and other special use funds, potentially increasing funding requirements.
• Dependence of Pinnacle West's cash flow on APS's performance and ability to make dividends and distributions.
• Inadequate insurance coverage for liabilities, including wildfire coverage.
• Structural subordination of Pinnacle West's debt securities to those of its subsidiaries.
• Financial losses from the use of derivative contracts due to market illiquidity or nonperformance by counterparties.
• Financial market disruptions increasing financing costs or limiting access to capital markets.
• Proposals to change policy in Arizona or other states through ballot initiatives or referenda increasing operational costs or impacting business plans.
• General economic conditions (inflation, tariffs, supply chain constraints, geopolitical factors) affecting business, financial condition, and results of operations.
• Volatility in the market price of common stock due to various internal and external factors.
• Anti-takeover provisions in articles of incorporation and bylaws making it difficult for shareholders to change board composition or discouraging takeover attempts.

Future Outlook

Pinnacle West aims to achieve carbon-neutrality by 2050, relying on a balanced energy mix including nuclear, renewables, and flexible natural gas generation. APS projects annual customer growth of 1.5% to 2.5% and retail electricity sales growth of 4.0% to 6.0% through 2030, driven by data centers and large manufacturing facilities. The company plans significant capital expenditures for infrastructure upgrades and new resource development, including up to 2,000 MW of flexible natural gas generation and a new gas pipeline by late 2029. APS is transitioning to full binding participation in the Western Resource Adequacy Program in 2027 or 2028 and expects Markets+ to go live in October 2027. The company is also exploring additional nuclear generation and advancing its AI strategy to optimize operations and enhance customer experience.

Management Comments

• Our vision is to create a sustainable energy future for Arizona.
• Our mission is to serve customers with safe, reliable, and affordable energy.
• We are committed to delivering operational excellence at the lowest cost possible while aspiring to lower carbon emissions over time.
• As energy demand in Arizona continues to grow, we remain committed to delivering reliable service to our customers, with a goal of achieving top quartile reliability as compared to peers.
• Wildfire safety remains a critical focus for APS and other utilities.
• We are committed to keeping bills as low as possible for our customers while maintaining high levels of reliability.
• APS has developed a subscription model it believes will allow for these large load customers to fund the incremental infrastructure needed to serve them through long-term contracts where they cover capital costs and assume development risks, accelerating their path to service and ensuring those infrastructure costs are borne by those customers rather than residential or small business customers.
• APS remains focused on providing reliable energy at the lowest cost possible while striving to lower emissions over time and continues to look for opportunities to support reliability through dispatchable resources, such as gas and the potential extension of coal beyond 2031.
• Serving customers with excellence is foundational to APS's business and remains our core focus as we adapt to evolving customer needs and emerging technology.

Industry Context

StockSavvy.ai notes that Pinnacle West's strategic focus on a balanced energy mix, including nuclear, renewables, and flexible natural gas, aligns with broader utility industry trends towards decarbonization while maintaining grid reliability. The significant demand from data centers and manufacturing facilities in Arizona reflects a national trend of increased electrification and industrial growth, posing both opportunities and challenges for utilities in terms of resource adequacy and infrastructure investment. The company's participation in regional energy markets like WEIM and Markets+ is consistent with industry efforts to optimize resource dispatch and reduce costs across the Western Interconnection. Regulatory challenges related to environmental standards (GHG, CCR) and rate recovery are common across the U.S. utility sector, highlighting the complex operating environment. The emphasis on wildfire mitigation and grid hardening also reflects a critical industry-wide response to increasing climate-related risks.

Comparison to Industry Standards

• APS aims for top quartile reliability compared to its peers, indicating a commitment to high operational standards within the utility sector.
• APS's average residential rates rose 16.2% from 2018-2024, which is well-below the national CPI-U increase of 24.9% and Phoenix's 32.1% for the same period, suggesting better-than-average affordability management compared to general inflation trends.
• The company's 58% clean energy supply in 2025 positions it favorably in the transition to lower carbon emissions, aligning with or exceeding many industry peers' current clean energy portfolios.
• Palo Verde Generating Station, as one of the nation's largest producers of carbon-free energy, provides a significant competitive advantage in meeting clean energy goals compared to utilities heavily reliant on fossil fuels.
• The company's Employee Experience Index of 86% in 2025 suggests strong internal culture and engagement, potentially outperforming some industry benchmarks for employee satisfaction.

Management Changes

Corporate Governance

Legal Proceedings

• APS is directly involved in legal proceedings related to the DOE's failure to meet its statutory and contractual obligations regarding acceptance of spent nuclear fuel and high-level waste, with a settlement agreement providing for claims recovery through December 31, 2025, and a proposed extension to 2028.
• APS, along with 25 other U.S. nuclear power plant operators, was named in a class action lawsuit on July 11, 2025, alleging antitrust violations by agreeing to exchange compensation information and suppress compensation.
• APS is a PRP in the Motorola 52nd Street Superfund Site, OU3, in Phoenix, Arizona, and anticipates additional expenditures for remediation, though the final costs are not yet reasonably estimable.
• One active lawsuit remains pending in the U.S. District Court for Arizona concerning $8.3 million in remediation legal expenses related to the Motorola Superfund site.
• EPA provided APS with a request for information under CERCLA related to PFAS at APS's Ocotillo power plant site, with on-site investigations and a remedial investigation/feasibility study commencing in January 2023, estimated to cost APS approximately $1.7 million for oversight and participation.
• Litigation is ongoing challenging EPA's current carbon emission standards for power plants, with an indefinite abeyance granted by the D.C. Circuit Court on April 25, 2025, and a proposed rule to repeal these regulations put forth by EPA on June 11, 2025.
• The EPA's final Good Neighbor Plan is subject to ongoing judicial review in the D.C. Circuit Court of Appeals, with a U.S. Supreme Court stay granted on June 27, 2024, and EPA withdrawing its proposal to add Arizona to the plan on December 19, 2024.
• Lawsuits were filed on February 25, 2026, in the D.C. Circuit Court of Appeals challenging EPA's repeal of the 2009 Endangerment Finding.
• A lawsuit challenging the ACC's authority to issue a formula rate policy statement was dismissed by the Superior Court of Maricopa County on June 13, 2025, but an appeal and a Petition for Special Action with the Arizona Court of Appeals are pending, with the Court of Appeals remanding the issue back to Superior Court on November 21, 2025, to determine if a formal rulemaking process is required.
• Several parties have filed requests for rehearing and appeals to the Arizona Court of Appeals seeking review of the ACC's decisions regarding the Grid Access Charge (GAC) for solar customers and on rehearing of the 2022 Rate Case.

Related Party Transactions

• Pinnacle West derives essentially all of its revenues and earnings from its principal subsidiary, APS, and its cash flow and ability to pay dividends are dependent on APS's earnings and distributions.
• The ACC must approve or receive prior notification of certain transactions between Pinnacle West, APS, and their respective affiliates, including equity infusions into APS.
• APS shares ownership of some of its generating and transmission facilities with other companies, and its share of operating costs and utility plant costs are accounted for using proportional consolidation.
• Pinnacle West has established a captive insurance cell to insure certain risks of Pinnacle West and its subsidiaries, with Pinnacle West being the primary beneficiary and consolidating the Captive's assets and liabilities.
• Pinnacle West has issued parental guarantees and provided indemnification under certain surety bonds for APS, which were not material as of December 31, 2025.
• Pinnacle West guaranteed certain obligations of NTEC to other owners of Four Corners in connection with the sale of 4C Acquisition, LLC's interest in Four Corners.
• Pinnacle West has guaranteed the obligations of PNW Power to make Production Tax Credit (PTC) funding payments to borrowers of the Clear Creek and Nobles 2 wind farms (PTC Guarantees), with approximately $26.3 million remaining as of December 31, 2025.
• Pinnacle West maintains certain performance guarantees related to the Kpono Solar Project sale-leaseback financing, despite the sale of its BCE subsidiary to Ameresco in 2024.

Stakeholder Impact

• Shareholders: Net income growth and increased dividends per share are positive for shareholders, but potential dilution from equity issuances and volatility in stock price due to various factors are risks.
• Customers: The 2025 Rate Case proposes a significant net base rate increase, which could impact customer bills. However, the company's affordability initiatives and subscription model for large load customers aim to protect residential and small business customers from cross-subsidization. Participation in western energy markets is expected to lower customer costs.
• Employees: The company's commitment to a strong human capital strategy, including safety, development, and engagement, benefits employees. The new collective bargaining agreement with IBEW provides stability for unionized employees. However, a nuclear wage class action lawsuit could impact compensation practices.
• Regulatory Authorities: The numerous ongoing rate cases, regulatory dockets, and environmental litigation highlight the significant interaction and potential impact on regulatory bodies and their decisions.
• Suppliers/Counterparties: The company's long-term contracts for fuel, purchased power, and capital expenditures provide stability for suppliers, but credit risk exposure to counterparties remains a factor.
• Communities: Wildfire mitigation efforts aim to protect communities. The company's clean energy goals and investments in infrastructure support the long-term energy needs and environmental health of the regions it serves.

Next Steps

• The hearing for APS's 2025 Rate Case is currently scheduled to begin in May 2026.
• APS is currently developing its next Integrated Resource Plan (IRP), due to be filed with the ACC in August 2026.
• APS expects to go live in the SPP Markets+ in October 2027.
• APS plans to transition to full binding participation in the Western Resource Adequacy Program in 2027 or 2028.
• APS will file a compliance plan with the ACC within 120 days of the December 3, 2025, decision to reduce the DSM program budget.
• Initial CCRMU site surveys are due to be completed by February 2027, and final site investigation reports by February 2028.
• APS is evaluating a proposed extension to the DOE settlement for spent nuclear fuel costs to cover costs paid through December 31, 2028.
• Pinnacle West's February 2024 Forward Sale Agreements have an extended maturity date of December 31, 2026.
• Pinnacle West's ATM forward sale agreement entered in December 2025 has a maturity date of July 2, 2027.
• Pinnacle West's and APS's revolving credit facilities mature on February 18, 2031, with two 1-year extension options.

Key Dates

Recommendation

Pinnacle West demonstrates solid operational performance with increased net income and customer growth, supported by strategic investments in a balanced energy portfolio and grid modernization. The company's commitment to carbon-neutrality and participation in regional energy markets are positive long-term drivers. However, significant regulatory uncertainties, particularly regarding the 2025 Rate Case, environmental compliance costs, and the potential repeal of clean energy standards, introduce considerable risk. The ongoing litigation and the need for substantial capital expenditures, coupled with potential supply chain constraints and inflation, warrant a cautious approach. While the company is financially stable and actively managing risks, the regulatory landscape and external economic pressures suggest a 'hold' recommendation until there is greater clarity on rate case outcomes and environmental policy impacts.

Keywords

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