The Story

In 1979, the Three Mile Island nuclear plant in Pennsylvania had the most serious accident in American nuclear history. The name became shorthand for everything that could go wrong with the technology. The plant ran for decades afterward, then shut down.

This month a regulator took another step toward bringing it back. The reason is artificial intelligence.

The reactor, now renamed, is being restarted to supply a single technology company under a long-term contract. The most infamous power station in the country is being rebuilt to feed data centers.

That is a strange sentence, and it captures where this story has arrived.

Since we started following this in March, the central question has been whether the energy system can be built fast enough to keep up with AI. The crisis in the Middle East made that question feel urgent in a way we hadn’t anticipated. Oil spiked, LNG was disrupted, and Europe started rationing fuel. The two things we were watching most closely had suddenly pulled into the same frame.

In this window, the signals shifted. Oil pulled back. Talks between the US and Iran moved closer to something that could, if it holds, reopen the Strait of Hormuz. We don’t know yet whether it will. What became clear is that even if it does, it may not change much about the outcome we’re watching.

The buildout has quietly detached from both systems at once. The oil market is unwinding, and it no longer governs the timeline. The public electricity grid is too slow, and where it matters most it has started to push back on cost. The industry’s response is not to wait. It is building a power system of its own.

The Signals Shifted, and the Buildout Didn’t Wait

The Strait of Hormuz has been the backdrop since we began. This window, the signals around it shifted. Not because resolution is certain, but because of what the market did with the possibility of it.

Talks between the US and Iran moved toward something that could, if it holds, lead to a reopening. Oil pulled back toward the mid-eighties. OPEC moved to add supply. The terms were still disputed at the last reading, and these negotiations have moved in both directions before.

What matters for this story isn’t whether a deal signs. It’s that even as the signals shifted, the buildout didn’t react to them. A calmer Gulf lowers the cost of diesel and jet fuel. It doesn’t shorten a transformer lead time, clear an interconnection queue, or settle who pays for a substation. The constraint on the buildout sits one layer below the oil market, and that layer hasn’t moved.

We expected this split: the macro picture changing while the physical timeline did not. This window is the clearest sign yet that it may be playing out that way.

(Hormuz deal and oil unwind, Europe and LNG supply)

The Public Grid Starts to Push Back

If the oil market is the layer the buildout has outgrown, the public grid is the layer it is now leaving.

The clearest signal came from Texas, the center of the American data center boom. Two actions in this window changed the terms.

First, the grid operator adopted the rule that gates large new connections. It replaced individual studies with a single batch process, with deadlines in July and results not expected until early 2027, for a queue of roughly 238 gigawatts. A project that wants to plug into the Texas grid now waits in a formal line with a number on it.

Second, and more telling, the governor issued a directive ordering regulators to make data centers fully fund the electric infrastructure that serves them, to cut residential transmission costs, and to begin phasing out the tax incentives that have lured these projects. The framing was blunt. Data centers should add capacity to the system, not simply add demand to everyone else’s bill.

This is a different kind of constraint than a turbine lead time. It cannot be solved with a larger budget. It is the politics of who pays, and it is the first sign that the public is being asked to subsidize the buildout and is starting to say no.

For a company deciding how to power a data center, the message is clear. Connecting to the public grid now means funding public infrastructure, surviving a ratepayer fight, and waiting years for a study. The alternative looks better every month.

(Texas data center cost politics)

So They Build Their Own

The alternative is dedicated power, owned or contracted directly, sitting as close to the data center as possible. This window showed it moving in gas, nuclear, and private finance at the same time.

In gas, dedicated generation kept scaling. A new advanced-class turbine order landed for a utility expansion driven by data center demand, and roughly two gigawatts of behind-the-meter gas is already operating, most of it serving a single AI company near Memphis. The national pipeline of announced on-site gas capacity is near one hundred gigawatts.

In nuclear, the long-dated leg gained credibility. Beyond the Three Mile Island restart, X-energy signed letters of intent to study multiple four-unit plants for utilities in the Mid-Atlantic and Kentucky, explicitly for data center load. A separate small reactor project in Texas cleared a faster environmental pathway, a licensing precedent that others can now follow.

None of this power arrives in 2026. That is not the point. The point is that large technology buyers are willing to underwrite dedicated generation years in advance, in gas and nuclear at once, to control the supply rather than queue for it.

The grid was supposed to be the shared system everyone connects to. The buildout is treating it as one option among several, and not always the preferred one.

(Nuclear restart and SMR deals, Behind-the-meter gas buildout)

And Finance It Privately

A power system of this scale needs capital structured for it. This window, it arrived.

The largest private financing yet for AI infrastructure launched in this window. A platform formed by a chipmaker, a private-capital firm, and an asset manager opened with thirty-five billion dollars to fund more than twenty gigawatts of computing through 2028, anchored by two frontier AI labs. Twenty gigawatts of compute is twenty gigawatts of power by another name, and this structure moves it off corporate balance sheets and onto vehicles held by credit and insurance investors.

The equipment makers repositioned toward the same demand. Eaton moved to spin off its vehicle business to concentrate on electrical gear for data centers. Siemens Energy acquired a software company that monitors transformers and grid assets, the very components in shortest supply.

Private capital, dedicated equipment, and the intelligence layer to run it are assembling around a power system that answers to contracts rather than to public planning.

(AI infrastructure financing)

Conclusions

For energy people: the demand signal is no longer coming through the grid alone. It is coming as direct requests to build, own, or contract dedicated generation, in gas now and nuclear later, financed by private capital that did not use to be in your market. The customer increasingly wants to own the power plant, or at least its output, for twenty years. That changes how you think about project structure, counterparty risk, and where the next order comes from.

For AI people: the limit on scaling has moved again. It was the model, then the chip, then the grid connection. Now it is also the politics of who pays for power and the long lead times of building your own. Next will be efficiencies. This will be attacked from all fronts. The companies furthest ahead are not waiting in the interconnection queue. They are restarting reactors, contracting gas plants, and raising tens of billions to fund the power directly. If your plan assumes the public grid will simply provide, the leaders have already concluded it will not.

For the series: the founding crisis may be closer to resolution than it has been, and the story has not waited for it. It has already changed shape. The question we started with, whether the system can be built fast enough, has given way to a different one: who builds it, who owns it, and who pays. What is taking form looks like a parallel power system, privately financed and privately controlled, built deliberately outside the public grid. We are watching to see if that holds.

What We Are Watching

• How the US-Iran talks resolve and whether the Strait of Hormuz reopens on terms that hold.
• The Texas regulators’ ratepayer-protection memorandum due July 17 and the move to cut residential transmission costs by July 31.
• The Three Mile Island restart comment period closing July 8 and the final environmental decision in September.
• Whether the small reactor letters of intent convert into firm orders.
• Whether the thirty-five billion dollar compute financing platform expands and names more projects.
• Second-quarter results from the turbine and electrical makers in July for the next read on the order book.
• Whether AI model efficiency reshapes the demand equation before the infrastructure buildout catches up. Smaller, faster models capable of running on local hardware rather than centralized data centers are proliferating. The shift may not reduce total power demand, but it could change where that demand falls: away from hyperscaler campuses and toward millions of distributed machines.
• Australia offers a precedent worth watching. By mid-2025, 4.2 million homes had installed 26.8 GW of rooftop solar, enough to push midday grid prices negative and force operators to curtail supply they didn’t build and don’t control. A system designed for top-down planning was disrupted from the bottom up. The question for AI infrastructure is whether distributed inference follows the same pattern before the centralized buildout finishes.

Field Notes

The source-layer research that backs this episode.

1. 075 Private Capital Builds the Parallel Power System
2. 076 Behind-the-Meter Gas Keeps Scaling as the Grid Workaround
3. 077 SLB Sets a Digital Investor Day to Pitch AI as a Standalone Story
4. 078 Europe and LNG Supply Ease at the Margin as Prices Fall
5. 079 The Hormuz Shock Reaches Signing Distance as Oil Falls Below $90
6. 080 Three Mile Island Clears a Restart Gate as SMR Deals Multiply
7. 081 Federal Permitting and Supply Status: A Quiet Window
8. 082 Texas Moves to Make Data Centers Pay Their Own Way