The Great Uprate Rush: Powering Big Tech with Existing Nuclear Fleet

Zach Martin

Welcome to Nuclear Capital on I R Hub Radio. I'm Zach Martin, and with me is Emily Martin. Today's episode is about what we're calling The Great Uprate Rush. Big Tech wants firm power now, and a lot of it is coming from reactors that already exist. A quick note before we start. Everything we discuss is for informational purposes only. Constellation, Vistra, Google, Amazon, Meta and any other companies we mention are not investment advice, and nothing here is a recommendation to buy or sell any security.

Emily Martin

Thank you, Zach. I'll start with the headline from October twenty seventh, 2026. The Department of Energy's Office of Energy Dominance Financing issued a conditional loan commitment of up to five billion dollars to Constellation. The money is meant for uprates and modernization at eight plants in Illinois, Maryland and Pennsylvania. Those are Braidwood, Byron, Clinton, Dresden, LaSalle and Quad Cities in Illinois, Calvert Cliffs in Maryland, and Limerick in Pennsylvania.

Zach Martin

And the word conditional matters there. It's a commitment, not money already spent. What does the program deliver if it all goes to plan?

Emily Martin

Nearly 1.1 gigawatts, roughly 1,080 to 1,100 megawatts, across the PJM and MISO grids. That's enough to power over 930,000 homes, and the program supports more than 10,000 project related jobs. It's like getting another reactor's worth of output without building a new reactor.

Zach Martin

Let's make the mechanics simple. Think of a runner who's already fit. You don't need a new athlete. You fix the stride, the shoes, the breathing, and the same runner covers more ground. An uprate does that to a plant.

Emily Martin

That's a good picture. The nuclear island stays largely as it is. The work focuses on the secondary side: steam turbines, higher efficiency feedwater pumps, digital instrumentation, plus fuel management. The result is more electrical and thermal output. The Nuclear Regulatory Commission has categories for this, including measurement uncertainty recapture, stretch uprates, and extended power uprates, which are the biggest.

Zach Martin

And what you skip is the hard part of greenfield construction. No new site, no long new transmission lines, no brand new plant license. The plant already has its grid connection.

Emily Martin

Which is why the hyperscalers are signing. Google and Constellation announced a 20 year power purchase agreement on October sixth for 890 megawatts of incremental capacity across 11 units at six sites in Illinois, Pennsylvania and New Jersey. Constellation says it represents more than 4.3 billion dollars of new investment. The first uprate is expected by 2028, and the reporting says all 890 megawatts arrive before 2032.

Zach Martin

There's more in that deal, too. A separate 15 year agreement covers 2,700 megawatts of existing PJM capacity, which helps keep those assets economically viable without pulling power off the grid. And there's an AI for energy partnership using Google Cloud and Gemini Enterprise, aimed at speeding up things like interconnection planning and outage management.

Emily Martin

Then there's Amazon. In late September, Constellation and Amazon announced a 20 year agreement tied to Calvert Cliffs in Maryland. It covers 690 megawatts, and it backs roughly a 190 megawatt uprate, expected around 2030 to 2032, along with a license extension.

Zach Martin

And Meta. Vistra signed 20 year agreements with Meta for over 2,600 megawatts, including 433 megawatts of new capacity from uprates at Perry, Davis-Besse and Beaver Valley. That came alongside an early October DOE conditional loan commitment of up to 4.2 billion dollars. Meta also has an earlier 30 megawatt uprate agreement with Constellation at Clinton.

Emily Martin

So where do small modular reactors fit? They're promising, but the timelines are different. X-energy's proposed Seadrift project in Texas is advancing, and there's a site study with Amazon and AEP, but we're still talking pre construction. Oklo, TerraPower and Kairos are longer dated. Commercial operations are largely pegged for the early to mid 2030s.

Zach Martin

I'd say it's a bridge versus a destination. Data centers need power in 2028, not just 2035. Uprates are signed, on existing sites, with interconnection rights already in hand. That's what separates established operators from early stage developers. A signed contract on an existing asset is a different thing from a promising design.

Emily Martin

Fuel is part of that difference. Operating reactors run on conventional low enriched uranium, up to five percent uranium 235. Many advanced designs need HALEU, and domestic supply is still ramping. That's a bottleneck the existing fleet mostly avoids, though enrichment and conversion capacity remain tight for everyone.

Zach Martin

Now, demand looks strong, but the stocks haven't moved in a straight line. Investors are weighing execution risk, outage scheduling, capital intensity, and the fact that federal loan approvals are conditional. Long term contracts give revenue visibility, but delivery still has to happen.

Emily Martin

Right, and uprate work often has to be fitted around planned refueling outages. A schedule slipping by a season matters when a customer is waiting.

Zach Martin

Small improvements compounding over time. That's the whole idea. Squeeze more from what you've already built, then add the new technology as it matures. Both can be true.

Emily Martin

One more reminder. This episode is informational only. Constellation, Vistra, Google, Amazon, Meta and the others we named are discussed for information, not as investment advice or a recommendation to buy or sell anything. Please do your own research.

Zach Martin

Thanks for listening to Nuclear Capital on I R Hub Radio. Real assets. Real ideas. A brighter tomorrow.