Pinnacle West delivered solid Q3 2025 results with EPS of $3.39, a modest increase from the prior year, driven by a 5.4% rise in weather-normalized sales and higher transmission revenues. Management significantly raised its 2025 EPS guidance to a range of $4.90 to $5.10, citing robust customer growth and contributions from the El Dorado Energy subsidiary, despite facing higher interest expenses and O&M costs. Looking ahead, the company forecasts 2026 EPS of $4.55 to $4.75, reflecting a year-over-year decrease due to normal weather assumptions, higher depreciation, and regulatory lag, though long-term sales growth forecasts were raised to 5-7% through 2030. Strategic highlights include the announcement of the 2,000 MW Desert Sun natural gas plant and a subscription model to support data center growth, positioning the company for 7-9% rate base growth through 2028.
| Metric | Value | Change |
|---|---|---|
| Q3 2025 EPS | $3.39 | +$0.02 YoY |
| Weather-Normalized Sales Growth (Q3) | 5.4% | Strong Growth |
| Residential Sales Growth (Q3) | 4.3% | Robust |
| C&I Sales Growth (Q3) | 6.6% | Robust |
| 2025 EPS Guidance | $4.90 - $5.10 | Raised from $4.40-$4.60 |
| 2026 EPS Guidance | $4.55 - $4.75 | Down vs 2025 |
| Long-Term Sales Growth (through 2030) | 5% - 7% | Raised from 4%-6% |
| Rate Base Growth (through 2028) | 7% - 9% | Increased from 6%-8% |
Management emphasized a massive demand upside, raising long-term weather-normalized sales growth guidance from 4-6% to 5-7% through 2030. This is supported by 4.5 gigawatts of committed load and a 20-gigawatt queue, driven by major industrial expansions like TSMC and Amkor. The shift to a higher growth rate signals that the utility is successfully capturing the economic momentum of Maricopa County, which was ranked the top county in the nation for economic development in 2025.
The announcement of the Desert Sun Power Plant, a 2,000 MW natural gas facility near Gila Bend, represents a critical strategic pivot to secure baseload generation. Phase 1 targets committed customers by late 2030, while Phase 2 utilizes a 'subscription model' to align costs with high-load factor customers like data centers. This strategy mitigates the risk of overbuilding and ensures that 'growth pays for growth,' protecting retail affordability while enabling massive infrastructure expansion.
Transmission investment is accelerating, with a projected $2.6 billion in cumulative capital expenditure through 2028 and a $6 billion plus backlog through 2034. Management highlighted that these investments benefit from FERC formula rates, providing constructive and timely recovery. This creates a dual benefit of enhancing reliability for the Desert Southwest region and generating wheeling revenues that subsidize costs for retail customers.
Capital deployment strategy remains aggressive yet disciplined, with rate base growth projections increased to 7-9% through 2028. To fund this, management has secured 85% of 2026 equity needs and forecasts only $1 billion to $1.2 billion of total equity needs through 2028. The focus on maintaining a balanced capital structure while executing a multi-billion dollar capital plan suggests strong financial governance and a proactive approach to managing dilution.
2026 earnings guidance implies a decline from the revised 2025 levels, projecting EPS of $4.55 to $4.75 compared to the $4.90 to $5.10 expected for 2025. Management attributed this to normal weather, higher financing costs, and increased depreciation, but notably, they have not included any assumptions for a positive rate case outcome in 2026. This creates a near-term earnings trough that could pressure stock valuation if the market focuses on the year-over-year compression.
Regulatory lag remains a persistent friction point. Management explicitly stated that the 2026 guidance does not include any contribution from the pending rate case, which is scheduled for a hearing in Q2 2026. While they are confident in a constructive outcome, the extended timeline creates uncertainty regarding earnings recovery and the ability to immediately recover the massive capital investments currently underway.
While equity needs for 2026 are largely derisked, the company still forecasts $1 billion to $1.2 billion in equity issuance through 2028. Although management aims to mitigate this through the subscription model and rate case improvements, the potential for dilution exists. The success of the subscription model in securing upfront cash from customers is unproven at this scale, adding execution risk to the financing plan.
Operational execution risks are elevated given the tight timelines for major infrastructure. The Desert Southwest pipeline is expected in service in 2029, and the first phase of the Desert Sun plant is slated for late 2030. Management noted they are 'staying very close' to the pipeline project, implying potential sensitivity to delays. Any slippage in these timelines could jeopardize their ability to serve the 4.5 GW of committed load.
Overall: Management exhibited a high level of confidence and discipline throughout the call, emphasizing operational excellence during a record-breaking summer and the successful execution of their long-term growth strategy. They were transparent about the near-term headwinds affecting 2026 earnings, specifically regulatory lag, but remained bullish on the fundamental demand drivers in Arizona.
Confidence: HIGH - Executives provided specific, detailed metrics regarding MW commitments, capital expenditure timelines, and sales growth percentages. They articulated clear mitigation strategies for risks, such as the subscription model to offset equity dilution and transmission investments to support affordability.
$4.90 to $5.10 per share (Raised)
$4.55 to $4.75 per share
$1.025 billion to $1.045 billion
2% to 2.5% (Narrowed to high end)
1.5% to 2.5%
5% to 7% (through 2030)
Hedging & Uncertainty: Management employed temporal hedging when discussing 2026 earnings, using phrases like 'we have not made any assumptions for rate case conclusion' and 'it just didn't seem prudent for us to be able to make any assumptions at this point.' This language serves to lower expectations for the coming year, framing the guidance as conservative. However, they used confident, non-hedged language regarding long-term growth, stating they are 'increasingly confident' in raising sales growth to 5-7%. They also used probability hedging regarding the subscription model, noting they are 'optimistic in being able to deploy' it, acknowledging it is a new commercial construct.
We are raising our 2025 EPS guidance from a range of $4.40 to $4.60 per share, up to $4.90 to $5.10 per share. - Andrew Cooper, CFO
We're increasingly confident in our forecasted long-term sales growth range and are raising it up from 4% to 6% to 5% to 7% and extending it through 2030. - Andrew Cooper, CFO
We have not made any assumptions for rate case conclusion that's informed 2026 guidance. - Theodore Geisler, CEO
Growth pays for growth. - Theodore Geisler, CEO
We've got all the key equipment secured, land interconnection is in place. - Theodore Geisler, CEO
We're actively working with counterparties and it's going to be a good way to be able to serve that queue both now and going forward. - Theodore Geisler, CEO
Analyst Sentiment: Analysts were highly focused on the mechanics of the new growth initiatives, specifically the 'subscription model' and the timing of the Desert Sun generation plant relative to the transmission pipeline. There was a clear interest in understanding the sustainability of the 2026 earnings dip and the specific contributions of transmission revenue.
Management Responses: Management responses were detailed and data-rich, effectively using specific MW figures and timelines to bolster credibility. They deflected concerns about the 2026 earnings dip by framing it as a function of conservative assumptions (no rate case) and weather normalization, while steering the conversation back to the long-term growth trajectory.
Desert Sun Project Timing: Analysts pressed for details on the 2029/2030 in-service dates and the sequencing of the pipeline versus generation. Management confirmed key equipment is secured and land is in place.
Subscription Model Mechanics: Questions focused on the 'filling the bucket' strategy for the 1.2 GW tranche. Management indicated active dialogue and optimism but acknowledged it is a work in progress.
Transmission Revenue Run-Rate: Analysts inquired about the sustainability of the $0.55 bump in transmission earnings. Management clarified it reflects a trend of increasing FERC-regulated investments.
2026 Earnings Composition: Analysts sought to understand the variance in sales growth contributions. Management explained it as variability in large customer ramp rates.
Pinnacle West is capitalizing on a rare convergence of explosive economic growth and strategic infrastructure investment. The revision of long-term sales growth to 5-7% and rate base growth to 7-9% places the company at the top of the utility sector for growth potential. The 4.5 GW of committed load from high-quality industrial customers like TSMC provides a visible revenue stream that de-risks the capital plan. While the 2026 guidance implies an earnings trough due to regulatory lag, this appears to be a conservative setup rather than a structural issue. The innovative subscription model for data centers and the expansion of FERC-regulated transmission assets offer creative avenues to balance sheet growth and affordability. The risk of equity dilution is mitigated by the high percentage of already priced needs for 2026. For investors seeking growth exposure in the utility space, PNW offers a compelling combination of defensive stability and upside leverage to the Arizona megatrend.
Maricopa County ranked #1 in the nation for economic development in 2025. Major employers like TSMC and Amkor are accelerating investments, with Amkor increasing its investment by $5 billion.
Phoenix inflation is growing at 1.4%, significantly lower than the national average of 2.9%, supporting continued population in-migration and affordability.
The utility experienced multiple record peak days in Q3, driven by extreme heat and underlying economic growth, with Palo Verde operating at 100% capacity factor.