Pinnacle West Capital : April Investor Meetings

PNW

Published on 04/15/2026 at 04:30 pm EDT

April Investor Meetings

Company Profile

Growth Outlook & Energy Future

Financial Outlook

2025 Rate Case

Service Territory

Key facts as of Dec. 31, 2025

Consolidated assets

$30B

Market cap

$10.62B

Generating capacity owned or leased (year end)

6.3GW

Customers

1.4M

Current % from clean energy

58%

Retail sales mix (Residential/Non-Residential)

50%/50%

As of December 31, 2025.

Arizona economy continues to be robust and attractive

Phoenix housing is affordable compared to major cities in the region

Maricopa County ranked top county for economic development in 2025 by Site Selection Magazine

Ranked #1 in the nation for semiconductor manufacturing by Business Facilities Magazine

Phoenix is ranked #1 out of 15 top growth markets for manufacturing by Newmark Group, a global real estate firm

Arizona State University ranked #1 in Innovation for 11th straight year by U.S. News and World Report

Phoenix remains #1 as best positioned industrial real estate market by Commercial Café Report

New APS Customer Meter Sets

40,000

30,000

20,000

10,000

-

2013

2017

2021

2025

Residential Customer Growth1

3%

2.4%

2.5%

1.5%-2.5%

2%

2.2%

2.3%

2.1%

1%

0%

2021

2022

2023

2024

2025

2026E

APS Residential Growth

Natn'l Avg.-Residential

1 National average from 2025 Itron Annual Energy Survey Report.

Arizona is an attractive location for business growth

Infrastructure ─ close proximity to major markets in the West

with accessibility by rail or truck

Weather predictability ─ low propensity for natural disasters and greatest solar irradiance in America

Workforce availability ─ three major universities graduating a skilled labor force

Affordability ─ business friendly policies and regulation

Large C&I customers as a growth driver

Accounts for 4%-6% of the 5%-7% long-term weather normalized sales growth1 guidance

Amplifier effect for jobs and surrounding communities leading to residential growth

Proposed rate design modifications including direct assignment of generation costs to ensure growth pays for growth

1 Forecasted guidance range through 2030.

Source: Arizona Commerce Authority

5.2%

Q1 2024 Q2 2024 Q3 2024 Q4 2024 Q1 2025 Q2 2025 Q3 2025 Q4 2025

0%

1%

2%

3%

4.0%*

4%

5.4%

5%

5.9%

5.5% 5.5%

5.9%

6%

6.8%

7%

Weather-Normalized Retail Sales Growth

9 consecutive quarters of growth within or exceeding the original long-term guidance range of 4%-6%

Strong C&I sales growth as extra high load factor customers continue to ramp

Total retail sales continued strength in 2025

2.0% Residential Sales Growth in 2025

7.5% C&I Sales Growth in 2025

2026 sales growth guidance of 4%-6%

Long term sales growth increased to 5%-7% and extended through 2030

Continued trend of robust sales growth

* Excludes $11M reduction to unbilled revenues in January 2025

Improvements at the

Arizona Corporation Commission

Balanced, constructive and more consistent outcomes, including improved ROE to APS

Approval of Formula Rate Policy Statement

Reaffirmation of Rate Case Settlement Policy

Continued support of adjustor mechanisms to improve cost recovery

Commitments by the Company

Sustain investment in customer experience improvements

Continue to find alignment with regulators and work with stakeholders on common issues

Advocate for reduced regulatory lag

Focus on customer affordability

Which is requiring us to invest

There is significant additional load we need to be ready to serve

8.6GW

2025

System Peak

4.5GW

Committed Load

~20GW

Uncommitted Load Opportunity

New gas generation:

Announced new gas generation build of up to 2 GWs

Anchor shipper on new gas pipeline, expected to be in service by late 2029

Palo Verde generating station:

Approximately $200 million incremental investment made during Q3 2025 on buyout option for nearly 100 MW of nuclear capacity previously under sale-leaseback

Increased investment in Palo Verde capital program of approximately $500M over the next 10 years

Strategic transmission:

Several major transmission investments to support new resources and the overall system buildout

Additional investment in large transmission projects to enable access to out of state generation and additional markets

Cumulative Transmission CapEx

$6 billion + of investment

$2.1B

$0.6B

2026 2028 2035

Major Transmission Projects in Development

Transmission Investment Strategy

Project

Miles/kV

Est. in-service

Investments in Extra High Voltage (EHV) transmission to

support reliability, resiliency, and integration of new resources

- Over 600 miles of 345kV and above and over 300 miles of 230kV lines in planning period

Investments in large transmission projects to enable access to out of state generation and additional markets

Constructive and timely recovery through annual FERC Formula rate with wheeling revenue benefiting retail customers

Helios to Milligan

~23 mi/230kV

2027

Pinnacle Peak to Ocotillo

~50 mi/230kV

2030

Cotton Transmission Corridor: Panda to Freedom Lines #2 & #1 Jojoba to Rudd

~80 mi/230kV

~29 mi/500kV

2030/2031

2031

Proposed Transmission for New Gas

TBD

2030

Source: APS 2026-2035 Ten Year Transmission System Plan

APS rates have remained well below the rate of inflation

Average annual % change 2018-2025

CPI CPI (PHX) APS Rates

4.24%

3.62%

2.67%

2018

2019 2020 2021 2022 2023 2024

2025

Maintaining Affordability

Disciplined cost management: Process improvements and preventative maintenance to reduce operating costs

Customer growth: Long-term goal of declining O&M per MWh as service territory grows

Customer Programs: Innovative customer programs to help customers save energy and money

Balanced long-term capital plan: Infrastructure investments designed to maintain reliability yet minimize annual customer impact

Stakeholder engagement: Working with partners to ensure reliability, affordability, and recovery through appropriate rate design

Long-term EPS growth of 5%-7% off original 2024 midpoint, supporting competitive total shareholder return

Optimized capital plan to reliably serve growing service territory, driving strong rate base growth

Managing a healthy capital structure with accretive equity to support investment

Declining O&M per MWh with focus on customer affordability

Competitive shareholder dividend

Solid balance sheet and credit ratings

5%-7% CAGR

EPS Growth off original 2024 midpoint1

Reduction of regulatory lag including formula rates

Rate case cadence and potential settlement of future rate cases

Continued support of adjustor mechanisms

Continued economic development driving sales and customer growth

Continued cost management

Potential drivers for more consistent and timely cost recovery

1 Long-term EPS growth target based on the Company's current weather normalized compound annual growth rate projections from 2024-2028.

APS Total 2025-2028 $10.35B

$380

$750

$860

$710

$420

$795

$695

$740

$460

$765

$550

$825

$2.60B $2.65B $2.70B

$2.40B

$335

$710

$465

$890

Generation Transmission Distribution Other

2025A 2026E 2027E 2028E

Source: 2025-2028 as disclosed in the 2025 Form 10-K

End-of-Year Rate Base and Growth Guidance1

ACC FERC

2024

2025

2026

2027

2028

Projected

Rate base $ in billions, rounded

$12.23

$2.52

$15.7

$4.0

Current Approved Rate Base and Test Year Detail

ACC

FERC

Rate Effective Date

03/08/2024

06/01/2025

Test Year Ended

6/30/20221

12/31/2024

Equity Layer

51.93%

52.28%

Allowed ROE

9.55%

10.75%

Rate Base

$10.36B2

$2.47B

1 Adjusted to include post-test year plant in service through 06/30/2023.

2 Rate Base excludes $215M approved through Joint Resolution in Case No. E-01345A-19-0236.

1 Guidance excludes CWIP amounts of $1.6B in 2024 and $2.7B-$3.2B in 2028.

2 Derived from APS annual update of formula transmission service rates.

3 Represents unadjusted ACC jurisdictional rate base consistent with regulatory filings.

2026 Financing Plan

DEBT

Estimated Amount4

Maturities

Completed

APS

$1.2B

$250M

$600

PNW5

$550M

$350M

$0

EQUITY

Estimated Amount

Priced6

Settled

PNW

$650M

$485M

$0

$300M-$350M

PNW Debt2

$1.0B-$1.2B

PNW Equity3

Approx.

$3.8B

Total Capital Investment

Cash from Operations1

$2.6B-$2.9B

APS Debt2

Approx.

$8.0B

2026-2028 Financing Plan

Funding Strategy

External equity to support balanced APS capital structure and expanded, accretive capital investment

Approximately 75% of the 2026 equity need has been priced

Maintain strong balance sheet and current credit ratings

1 Cash from operations is net of shareholder dividends.

2 APS and PNW debt issuance is net of maturities.

3 PNW equity is net of $485M already priced.

4 Includes maturities.

5 Excludes refinancing of existing term loan.

6 As of January 2026, amount represents $275M priced under PNW's Block Equity Forward in February 2024 and $210M priced through the At-the-Market (ATM) program.

Disclaimer

Pinnacle West Capital Corporation published this content on April 16, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on April 15, 2026 at 20:29 UTC.