NEW YORK, July 27, 2026, 12:04 EDT — Stocks start trading as an emergency affecting the U.S. power grid challenges AI-driven energy trading, while equipment makers’ shares move lower.
- Southwest Power Pool was granted permission by Washington to deploy additional power generation across its 17-state region until August 3.
- Friday’s western emergency warning concluded with no controlled outages. A less severe advisory stays in effect until August 1.
- Shares of four leading grid and data-center providers dropped an average of 4.1% on Monday, while the broad-market SPY fund declined 0.3%.
Shares of U.S. grid and data-center power firms declined steeply on Monday, even as new federal measures aimed at safeguarding electricity supply were announced. By 11:48 a.m. EDT, an equal-weight basket tracking four providers had fallen 4.1%. The SPY dropped 0.3%.
The gap serves as an indicator for investors. Ongoing grid stress favours a prolonged capital cycle, though does not ensure immediate income. The group maintained an average trailing valuation close to 54.6 times earnings.
The order from the Energy Department permits Southwest Power Pool to operate designated plants in times of reliability concerns. Backup generators are also authorized for use ahead of, or during, a level-three emergency. The order remains in force until August 3.
The Department of Energy says there are over 35 gigawatts of unused backup generation across the country. This number does not represent supply currently available within SPP.
The 17 states refer to the full area served by SPP. The emergency alert on Friday was limited to its western balancing region, which spans sections of seven states. There were no controlled outages.
SPP lifted the alert late Friday following conservation measures that safeguarded reserves. The West remains under a conservative advisory until August 1, according to the most recent update. The East continues to face a resource advisory through July 30.
The contrast in the market was clear:
| Security | Price | Monday move | Trailing P/E |
|---|---|---|---|
| GE Vernova NYSE:GEV | $962.18 | fell 5.2% | 27.6x |
| Eaton NYSE:ETN | $388.66 | dropped 3.8% | 38.0x |
| Quanta Services NYSE:PWR | $607.59 | slipped 2.9% | 83.3x |
| Vertiv Holdings NYSE:VRT | $276.75 | decreased 4.7% | 69.5x |
| Utilities Select Sector SPDR Fund (NYSEARCA:XLU) | $45.91 | down 0.8% | — |
| SPDR S&P 500 ETF Trust NYSEARCA:SPY | $736.72 | edged down 0.3% | — |
Prices as of around 11:48 a.m. EDT. Percentage changes reflect current prices versus previous closing levels.
The four-stock group underperformed SPY by 3.9 percentage points. Its return was 3.3 points lower than the utility fund. At the very least, the crisis did not protect high-multiple suppliers.
The firms tackle varied challenges. GE Vernova covers generation as well as grid solutions. Eaton specializes in managing power. Quanta constructs electrical infrastructure, and Vertiv delivers power and cooling for data centers.
The strain is not limited to SPP. PJM Interconnection recorded a provisional peak of 168,158 megawatts on July 2, surpassing its 2006 all-time high by 1.6%.
During that period of extreme heat, forced generation outages ranged from 18,100 to 19,400 megawatts, marking an increase of 41% to 52% compared to the typical recent peak-day average. Across PJM’s territory, average temperatures were at 97 degrees Fahrenheit, and certain regions experienced temperatures in the low 100s.
Data centers are shifting how electricity demand looks. According to the Energy Information Administration, servers are projected to account for 7% of commercial electricity consumption in 2025. Because their demand remains steady at all hours, grids are offered less respite during nighttime periods.
PJM projects summer peak demand will rise 3.6% each year through the next ten years, compared to just 0.3% in its 2021 estimate. The latest projection anticipates an increase of almost 66 gigawatts by 2036.
Hardware stands as the more significant bottleneck. Ben Boucher, senior analyst at Wood Mackenzie, said, “Equipment availability is becoming the biggest concern for developers.” By early 2026, lead times for generator step-up transformers exceeded 160 weeks. Reuters
Lead times for high-voltage breakers rose to 125 weeks, compared to 77 weeks in 2023. Wood Mackenzie estimates that data centers could account for up to 40% of the electrical-equipment market in an accelerated scenario. This figure was under 2% in 2020.
The shortage benefits suppliers who can deliver and operate efficiently. However, Monday’s market action suggests that upcoming orders are already priced at high valuations. Immediate grid needs do not necessarily translate into further share gains.
Risks: A drop in temperatures, a rebound in imports, or increased wind generation may relieve short-term pressure. Delays in projects, expanded manufacturing output, or weaker demand from data centers might weigh on equipment prices and valuation multiples.
The next round of checks is imminent. SPP’s East advisory concludes on July 30, with the West advisory finishing on August 1. DOE’s emergency authority will lapse on August 3.
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