Pinnacle West Capital Corporation (PNW) | The Buildout — AI Infrastructure

——Mkt cap — · 52-wk —–— · YTD — · delayed

Updated Sep 22, 2026Q2 FY2026 reviewed

Pinnacle West Capital Corporation supplies regulated electric power and grid capacity to Arizona's data-center and semiconductor buildout.

C&I sales +12.7%

Data center and advanced manufacturing drove Q2 2026 growth.

Peak demand 9,164 MW

New all-time record Aug 2, 2026, above prior mark by 500+ MW.

TSMC commits $265B

Total Arizona commitment; up to 12 fabs and packaging sites.

Q2 EPS fell $0.15

Higher interest and depreciation offset strong sales growth.

The Buildout Takeaway

PNW is a demand-side AI play: it sells no technology, but its Arizona territory is filling with semiconductor fabs and data centers whose power needs drive its growth. Load is running above the long-term guide and the customer pipeline is widening beyond a single large name. The open question is regulatory — whether a rate case decision expected before year-end lets a growing capital base earn a return, since strong sales are not yet reaching the bottom line.

Analyst coverage

25 analysts·7 Buy17 Hold1 Sell

Median target$106 Range $97–$129 · 7 estimates

Management guidance

2026 EPS $4.55–$4.75, expect top end · 2026 sales growth 4%–6% · rate base CAGR 7%–9% through 2028 · long-term sales growth 5%–7% through 2030 · O&M per MWh declining over time

Important: The Buildout is a data analytics platform. Content is generated by algorithms and AI agents using public filings, earnings transcripts, and market data. This is not personalized investment advice.

Our View

The Verdict

Pinnacle West, through its subsidiary Arizona Public Service, is a regulated electric utility. It does not make chips, servers, or data-center equipment; it supplies electricity and the grid capacity that semiconductor fabs and data centers need before they can operate. Its role in the AI buildout is as a picks-and-shovels utility. Because its customers cannot easily switch providers, its position is durable. What determines its returns is how fast regulators let its growing capital base earn.

Market Cap	—
Revenue (TTM)	$5.6B
Revenue Growth	+5.7%
EBITDA Margin (TTM)	44.3%

Net Debt	$11.4B
Earnings Beats	4 of 7
P/E (TTM)	—
EV/EBITDA (TTM)	—

What We Like

TSMC has announced an additional $100 billion Arizona investment, bringing its total commitment to $265 billion, with plans for up to 12 leading-edge fabs and advanced packaging facilities.
About 4,500 MW of committed large C&I load is ramping, and management says that ramp continues beyond 2030.
Weather-normalized sales growth was 9.4% in Q1 2026 and 9.6% in Q2 2026, above the 5%–7% long-term guidance band.
Palo Verde is described by management as the largest producing nuclear plant in the country, running on 100% recycled wastewater.
Rate base is guided to compound at 7%–9% through 2028, the link between capital spending and the earnings base.

What We’re Watching

The rate case is in the briefing phase, with a final commission decision expected before year-end 2026; it determines how fast growing capital spend converts to earnings.
The ~20 GW uncommitted queue may include duplicative projects; management says how much is ready to execute is to be determined.
Q2 2026 EPS fell $0.15 year over year as higher interest and depreciation offset strong sales.
Financing needs are significant — the existing $900 million ATM is fully utilized and a new $500 million ATM was filed.

Bottom Line

The case is intact and strengthening on demand: the load pipeline, customer commitments, and project set are all expanding. What remains unproven is the recovery mechanism — whether regulators let a growing capital base earn a return. Management is holding formal guidance steady even as the opportunity set grows, and the ~20 GW uncommitted queue is of uncertain quality. The open question is whether the rate case decision due before year-end establishes a cost-recovery framework that turns capital spend into earnings.

Next upThe Integrated Resource Plan, due by end of October 2026, is the first detailed look at the timing of the committed ~4.5 GW large-load ramp and TSMC's full build-out. It tests whether the ramp runs faster or slower than current guidance implies.

Last Quarter — Q2 FY2026

Earnings Beat

Q2 2026 revenue was $1,455.7 million, with weather-normalized sales growth of 9.6%. C&I sales rose 12.7% and residential rose 5.6%, and customer growth was 2.1%. EPS was $1.43, down $0.15 year over year, as higher interest net of AFUDC, higher depreciation and amortization, and a lower transmission true-up more than offset the sales benefit.

Metric	Q2 FY2026	Q1 FY2026	Q2 FY2025	YoY
Revenue	$1.5B	$1.1B	$1.4B	+7.1%
Gross margin	100.0%	62.0%	43.8%	+5620bps
EBITDA	$549M	$641M	$549M	−0.0%
EPS	$1.43	$0.27	$1.58	−9.2%
C&I sales growth	12.7%	14.6%	n/a	—
Weather-normalized sales growth	9.6%	9.4%	n/a	—

Taiwan Semiconductor Manufacturing Company's announcement of an additional $100 billion investment in Arizona, bringing its total commitment to $265 billion. TSMC now plans to develop up to 12 leading-edge fabrication and advanced packaging facilities in North Phoenix, along with the dedicated research and development campus.— Theodore (Ted) Geisler, Chairman, President and CEO, 2026-08-04

Management tone: Management's tone on the Q2 2026 call emphasized upside potential and a sustained runway in sales growth. The Cholla project moved from a study to an announced conversion, while the IRP filing moved from August 3 to the end of October, framed as a quality decision allowing time to capture the latest growth trends. The one place tone held rather than escalated was guidance, which was reiterated and not raised.

Management Guidance

Management reiterated 2026 EPS guidance of $4.55–$4.75 and said it expects to finish the year at the top end. It did not update 2026 sales-growth guidance of 4%–6% even after 9.6% second-quarter growth, saying year-to-date growth tracks closer to the long-term 5%–7% outlook. Capital expenditure guidance was not updated and excludes the Cholla conversion, which could add up to approximately $440 million, mostly in 2027–2028. A new $500 million ATM was filed after the existing $900 million program was fully utilized, and $500 million of senior notes were issued. The company expects a rate-case decision before year-end and to file its IRP by end of October.

Business Trajectory

Trajectory

The code-computed signals show revenue accelerating and margins expanding — EBITDA margin, operating margin, and gross margin are all up year over year. But the earnings quality signal is weak: trailing-twelve-month free cash flow is negative at -$878.5 million as the company funds a heavy capital program externally. The tension is that strong load growth has not yet reached the bottom line. Q2 2026 revenue of $1,455.7 million was up year over year, yet EPS fell $0.15 on higher interest, higher depreciation, and a transmission true-up. Management's framing is that the bulk of the semiconductor-driven demand ramp is still ahead.

Revenue & Margin Trajectory

Gross margin as reported.

Share Price — 12 Months

52-week range $86–$109.

Share Price — 12 Months

52-week range $86–$109.

The Numbers

The Model

The model projects FY+1 revenue of $5,768 million and EBITDA of $2,284 million, a 39.6% EBITDA margin. For FY+2 it projects revenue of $6,657 million and EBITDA of $2,769 million, a 41.6% margin. The near-term anchor is the load and capital already in motion — the committed large-load ramp, the projects under construction, and the rate case calendar. The FY+2 figure depends on how much of the committed pipeline turns into billed load and how the recovery framework resolves.

Revenue & EBITDA Projections

Solid bars are reported actuals; outlined bars are model projections — not company guidance.

Metric	FY2025	Next FY (E)	Following FY (E)
Revenue	$5.3B	$5.8B	$6.7B
YoY Growth	—	+8.0%	+15.4%
EBITDA	$2.1B	$2.3B	$2.8B
EBITDA Margin	39.9%	39.6%	41.6%

Projections are the median of 5 independent model runs. The model’s revenue sits 4.8% above analyst consensus.

What Could Go Right — and Wrong

What good looks like

More of the ~20 GW uncommitted queue converts to committed contracts through the subscription model.
The rate case produces a constructive outcome with a sustainable cost-recovery framework.
TSMC's load ramps faster than current guidance implies once fab schedules are finalized.
The IRP shows the committed ~4.5 GW large-load bucket ramping ahead of the current guide.
Cholla and other announced projects are formally added to the capital plan, lifting the rate-base trajectory.

What could go wrong

The rate case preserves regulatory lag, keeping capital spend from converting to earnings.
The ~20 GW queue proves largely duplicative and conversion stays slow.
TSMC's ramp is back-end-loaded and slips, delaying the semiconductor load.
Higher interest rates raise the cost of the external financing program.
The Desert Southwest pipeline is delayed beyond end-of-decade, capping next-decade growth.

What’s Next

Looking Ahead

The next twelve months turn on a regulatory and planning calendar. The rate case decision, expected before year-end 2026, sets the recovery framework that determines whether a growing capital base earns a return. The IRP, due by end of October 2026, gives the first detailed view of how the committed large-load pipeline ramps and how much of TSMC's build-out flows into the plan. Resource contracts from the 2025 all-source RFP and any subscription-model filings would show how much of the uncommitted queue becomes real.

Catalysts

End of October 2026IRP filing — First detailed view of the committed ~4.5 GW ramp and TSMC build-out.
Before year-end 2026Rate case decision — Sets the cost-recovery framework for the growing capital base.
End of 2026RFP resource contracts — Some 2025 all-source RFP resources contracted by year-end.
2026Subscription-model filings — Would show how much of the ~20 GW queue converts to committed load.
H1 2027Halo Vista first tenant — First tenant arrives in the mixed-use corridor near TSMC.
H2 2027TSMC Fab 2 production — 3-nanometer volume production begins, ramping semiconductor load.

Numbers

Financials

Annual Summary

Metric	FY2024	FY2025	TTM	YoY
Revenue	$5.1B	$5.3B	$5.6B	+4.2%
Gross Margin	40.5%	33.8%	55.5%	673bps
EBITDA	$2.0B	$2.1B	$2.5B	+8.1%
EBITDA Margin	38.4%	39.9%	44.3%	+145bps
Net Income	$609M	$617M	$640M	+1.3%
Free Cash Flow	−$639M	−$820M	−$878M	—
Net Cash	—	—	—	—

Key Ratios (Trailing)

Valuation

P/E TTM—
EV/EBITDA TTM—
EV/Revenue TTM—
Price/FCF TTM—

Profitability

Gross Margin (TTM)55.5%
EBITDA Margin (TTM)44.3%
Net Margin (TTM)11.5%
ROIC6.4%
FCF Conversion-35.7%
SBC / Revenue0.2%

Reference

The Company

Pinnacle West Capital Corporation is an investor-owned electric utility holding company based in Phoenix, Arizona. It earns essentially all of its revenues and earnings from its principal subsidiary, Arizona Public Service Company, described in its 10-K as Arizona's largest and longest-serving electric company, generating electricity in 11 of Arizona's 15 counties. It operates one reportable segment, the regulated electricity segment, covering regulated retail and wholesale electric service plus electricity generation, transmission, and distribution. Management describes its role as serving a territory that is becoming a semiconductor and data-center hub.

The growth runs through the commercial and industrial customer class, which management says is about half of sales. The company owns the three-unit Palo Verde nuclear plant, six natural gas plants, two oil-only plants, and coal sites including the retired Cholla and Navajo plants. Its primary state regulator is the Arizona Corporation Commission, where a rate case is pending, and it also runs FERC-jurisdictional transmission operations with a formula rate and a transmission adjuster that management describes as favorable for timely cost recovery.

Business Segments

Retail electric service

C&I is about half of sales

Electric service to residential and commercial/industrial customers across the Arizona territory.

Growth driver: Data center and semiconductor load

Transmission services

Recovered via FERC formula rate and adjuster

Transmission for others and wheeling, collected through an annual-true-up FERC formula rate.

Growth driver: Transmission capital step-up

Wholesale energy sales

~4.5% of 2025 electric operating revenues

Wholesale electricity sales and services, a small share of the business.

Growth driver: Small share of revenue

Competitive Landscape

The 10-K says APS faces varying degrees of competition from other investor-owned electric and gas utilities in Arizona, such as Southwest Gas Corporation. The generated wiring layer also lists Salt River Project as providing electric utility services for data-center loads in the Phoenix metro; that row is inferred rather than a company disclosure. A generic consulting-firm competitor list also appears in the source material but is low-relevance for a regulated utility.

Southwest Gas Corporation
10-K: APS is subject to varying degrees of competition from other investor-owned electric and gas utilities in Arizona, such as Southwest Gas Corporation.
Salt River Project
Listed in the generated wiring layer as serving data-center loads in the Phoenix metro; inferred, not a company disclosure.

Southwest Gas Corporation is a 10-K-documented competitor; Salt River Project is a generated-layer entry. The remaining named firms in the source are a low-relevance consulting list.

Supply Chain

PNW is a regulated monopoly, so its customers cannot easily switch providers. It sits downstream of equipment and fuel suppliers and upstream of a small set of very large electricity buyers.

Supplier

NTEC

Coal supplier for Four Corners (10-K documented)

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Regulated monopoly service territory

PNW

It earns a regulator-approved return on capital invested in generation, transmission, and distribution.

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TSMC

>1 GW prior commitment

Electric power for the North Phoenix fab cluster

North Phoenix supplier cluster