A year ago, the AI power trade was one simple idea: buy anything attached to an electron. This year the trade split in half, and the halves are not speaking. The companies that actually make electricity are down double digits. The companies that sell them equipment are having the year of their lives.
Wall Street calls what happened to the power producers a “derating.” That is the industry word for earning the same profits but getting smaller applause — investors simply decided to pay less for every dollar these companies make.
The scoreboard tells it faster than we can.
| Company | What it does | 2026 so far |
|---|---|---|
| GE Vernova (GEV) | Turbines, grid equipment | +55% |
| Caterpillar (CAT) | Generators, engines | +47% |
| Howmet Aerospace (HWM) | Turbine components | +37% |
| Solaris | Mobile power | +28% |
| Vistra (VST) | Power producer | −10%+ |
| Constellation Energy (CEG) | Power producer | −23% |
| NRG Energy (NRG) | Power producer | −25%+ |
What broke
Politics found the power bill. In Texas, Governor Abbott halted new data-center grid connections and ordered an audit of the big ones already plugged in. It is an election year. Data centers get blamed for rising electric bills, and pausing them polls well. Nobody in Austin has a reason to finish that audit before November 3.
Here is why that stings. A power company’s stock price is a bet on contracts it has not signed yet. Freeze the hookups and open an audit, and those contracts do not die — they sit in a drawer in Austin until after the election. Wall Street does not pay full price for revenue in a drawer.
There is trouble back East, too. PJM — the giant power grid serving the mid-Atlantic states — runs something called a capacity auction. That is where the grid pays power plants in advance to promise they will be available on the worst day of the year. The latest auction came up 6.8 gigawatts short for 2028. The promise is missing, not the electricity — yet.
The grid’s fix: an extra auction in late September offering 15-year contracts, plus a new rule with teeth. Starting in June 2027, data centers that have not secured their own power supply can be unplugged when the grid gets tight. Like a teenager’s Xbox.
Notice where that rule points. Tell a data center it can be unplugged unless it brings its own power, and it will go buy its own power — turbines, engines, generators, anything with a nameplate. The rule written to punish data centers is, in practice, a purchase order for the equipment makers.
Why nobody builds
Here is the quiet scandal: the shortage is profitable. When power is scarce, prices go up, and the companies that already own plants collect those higher prices on plants they built decades ago. One veteran utilities analyst put it plainly: the existing generators are “perfectly happy not to build.” Constellation’s own CEO says the early AI build-out will lean on power plants that already exist.
There is a bill at the end of that logic, and it lands on everyone’s electric meter. Scarcity pricing is a polite term for all of us paying more for power that already exists. That is why the politicians showed up — and why they are unlikely to leave quietly.
The bull case
To be fair, the optimists have a real argument. All this new rule-making creates certainty, and certainty could finally let Constellation Energy (CEG) and Vistra (VST) sign the long-term contracts the market has been waiting for. Fifteen-year deals are a gift to whoever holds the power when the music stops.
Maybe. But that is a bet on regulators, auctions and election calendars all breaking your way. The equipment makers do not need any of that to go right. They get paid when anyone builds anything, by either side of the argument, in every state. One half of this trade requires a political forecast. The other half requires a purchase order.