Nuclear Uprates and Restarts: Powering the Near-Term AI Boom

Zach Martin

Eight hundred thirty seven megawatts. That's the Crane Clean Energy Center, formerly Three Mile Island Unit 1, a reactor that shut down in 2019 for economic reasons. Microsoft signed a 20 year power purchase agreement with Constellation to bring it back, with a targeted restart in 2028 and an estimated $1.6 billion of total investment. Welcome to Nuclear Capital on KMKT I R Hub Radio. I'm Zach Martin.

Emily Martin

And I'm Emily Martin. Today we're skipping the headline reactors of the 2030s and looking at the megawatts that could show up this decade, from the fleet we already have. Uprates and restarts.

Zach Martin

Think of it like a coach working with the roster he already has. Before you draft a rookie who needs years of development, you ask what more the veterans can give. Small modular reactors are the rookies. Most of their commercial scale is slated for the 2030s.

Emily Martin

Meanwhile the demand is now. Hyperscalers need firm, around the clock, carbon free power in grid constrained regions like PJM, which has been described as facing an estimated 6.8 gigawatt capacity deficit. So what is an uprate, in plain terms?

Zach Martin

It's getting more output from a plant that already runs. Modernize turbines, generators, and instrumentation and controls, and the unit can produce more thermal and electrical output. The reactor building, the cooling, the heavy civil work, those are already built and largely depreciated.

Emily Martin

And the big hidden asset is the connection. These sites already have switchyards, transmission corridors, and security. A new greenfield plant or an SMR has to wait in a multi year interconnection queue. With Crane, interconnection rights from the Eddystone site were transferred over, so that path was already there.

Zach Martin

Now the deals. Google signed a 20 year agreement with Constellation supporting about 890 megawatts of new nuclear capacity across 11 units in PJM, in Illinois, Pennsylvania, and New Jersey. Plants named include Braidwood, Byron, LaSalle, Quad Cities, Limerick, and Salem. Constellation is putting up about $4.3 billion of private capital, with the first uprates online starting in 2028 and running through 2032.

Emily Martin

There's more in that package. A separate 15 year supply agreement for 2,700 megawatts across PJM, and a five year technology agreement where Google Cloud and Gemini tools help with plant operations, outage scheduling, and interconnection modeling.

Zach Martin

Amazon's piece is smaller but telling. A 20 year agreement with Constellation underpinning roughly a 190 megawatt uprate across two units at Calvert Cliffs in Maryland, targeted between 2030 and 2032, alongside a 20 year license extension.

Emily Martin

And Meta. A 20 year agreement on Constellation's Clinton plant in Illinois, supporting a 30 megawatt uprate and a 20 year license extension. Meta also has multi gigawatt offtake and uprate frameworks across Vistra's fleet, with plants like Perry, Davis-Besse, and Beaver Valley named.

Zach Martin

Then there's the financing. Per the reporting, the Department of Energy's Office of Energy Dominance Financing announced a conditional commitment of up to $5 billion to Constellation for modernization and uprates across eight plants, 15 reactors, in Illinois, Maryland, and Pennsylvania. That's nearly 1.1 gigawatts of incremental capacity, tied to the federal UPRISE program.

Emily Martin

The word conditional matters. It depends on technical, environmental, legal, and financial closing conditions before definitive loan documents. It's a signal, not a finished loan. Crane also had a reported $1 billion DOE loan announced in late 2025.

Zach Martin

So why does this capital stack work? Fifteen to 20 year contracts at a premium over wholesale clearing prices give an operator revenue certainty. That justifies ordering long lead items like turbines, generators, and digital controls. It's compounding. Small, disciplined improvements across many units add up to gigawatts.

Emily Martin

And it changes the fleet's outlook. Those contracts help justify license renewals. Constellation is pursuing renewal for Crane out to 2054, and second renewals can allow operation out to 80 years. The old question was whether plants would retire early. Now the question is how much more they can deliver.

Zach Martin

Interpretation here, not fact: uprates won't replace new builds. Gigawatts of this scale are modest next to AI demand, and every project still faces regulatory approvals and execution risk. But they're the bridge.

Emily Martin

A bridge built on foundations that already exist. That's the capital story.

Zach Martin

One reminder. Companies discussed today, including Constellation, Vistra, Microsoft, Google, Amazon, and Meta, are for informational purposes only and are not investment advice or a recommendation to buy or sell any security. Thanks for listening to I R Hub. Real assets. Real ideas. A brighter tomorrow.