PNW Pinnacle West Capital
Arizona load-growth utility near fair value; rate-base expansion supports durable 9.5% ROE.
The story
Pinnacle West (APS) is Arizona's regulated electric utility benefiting from one of the strongest load-growth profiles in the US — data centers, manufacturing, and population migration. Trailing ROE of 9.1% sits slightly below a typical allowed return (~9.5-10%), reflecting regulatory lag and recent rate-case timing. Balance sheet is investment-grade with constructive regulatory framework in Arizona.
Normalized ROE held at 9.5% — consistent with Arizona's allowed return framework and slightly above trailing 9.1% as regulatory lag resolves. Terminal book growth raised from 3.5% to 4.5% (just below risk-free 4.81%) given Arizona's exceptional 7.3% revenue CAGR and sustained capex pipeline tied to data-center and population growth, which supports above-average rate-base expansion. Beta and failure probability unchanged — regulated utility risk profile is stable.
Value drivers
| Return on equity (normalized) | 9.5% |
| Book-value growth (Y1) | 5.5% |
| Terminal book growth | 4.5% |
| Beta | 0.55 |
| Failure probability | 0.5% |
| Cost of equity | 7.3% |
Valuation bridge
| PV of excess returns | 1.33B |
| PV of terminal excess | 3.48B |
| Equity value | 11.79B |
| ÷ shares → per share | $97.32 |
News
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Projected excess returns on equity
| Yr | Book equity | ROE | Excess return | PV |
|---|---|---|---|---|
| 1 | 7.05B | 9.5% | 156.36M | 145.75M |
| 2 | 7.43B | 9.5% | 164.96M | 143.33M |
| 3 | 7.83B | 9.5% | 173.72M | 140.69M |
| 4 | 8.23B | 9.5% | 182.61M | 137.86M |
| 5 | 8.63B | 9.5% | 191.61M | 134.83M |
| 6 | 9.04B | 9.5% | 200.68M | 131.63M |
| 7 | 9.45B | 9.5% | 209.80M | 128.28M |
| 8 | 9.87B | 9.5% | 218.94M | 124.78M |
| 9 | 10.28B | 9.5% | 228.05M | 121.15M |
| 10 | 10.69B | 9.5% | 237.11M | 117.41M |
Key risks
- Regulatory disallowance on large capex pipeline
- Interest rate sensitivity on leveraged balance sheet
- Load-growth assumptions proving overly optimistic if data-center demand delays
Catalysts
- Next rate case outcome supporting ROE recovery toward allowed return
- Continued data-center load announcements in APS territory
- Cost-of-capital adjustment in regulatory proceedings