On Tuesday, Google announced that it had made a power purchase agreement for electricity generated by a small modular nuclear reactor design that hasn't even received regulatory approval yet. Today, it's Amazon's turn. The company's Amazon Web Services (AWS) group has announced three different investments, including one targeting a different startup that has its own design for small, modular nuclear reactors—one that has not yet received regulatory approval.

Unlike Google's deal, which is a commitment to purchase power should the reactors ever be completed, Amazon will lay out some money upfront as part of the agreements. We'll take a look at the deals and technology that Amazon is backing before analyzing why companies are taking a risk on unproven technologies. //

X-energy's technology is based on small, self-contained fuel pellets called TRISO particles for TRi-structural ISOtropic. These contain both the uranium fuel and a graphite moderator and are surrounded by a ceramic shell. They're structured so that there isn't sufficient uranium present to generate temperatures that can damage the ceramic, ensuring that the nuclear fuel will always remain contained.

The design is meant to run at high temperatures and extract heat from the reactor using helium, which is used to boil water and generate electricity. Each reactor can produce 80 megawatts of electricity, and the reactors are designed to work efficiently as a set of four, creating a 320 MW power plant. As of yet, however, there are no working examples of this reactor, and the design hasn't been approved by the Nuclear Regulatory Commission. //

SetsChaos Smack-Fu Master, in training
28d
4
I'm excited at the prospect of having new nuclear energy in the US. There's been a huge NIMBY push since at least TMI that's seen a lot of regression in the field, despite the science clearly showing advantages for nukes as a base load power source. As much as I want LLM and AI to go the way of NFTs, I am happy to see something revive nuclear.

SMRs are a step in the right modernization direction, but it'd be really cool to get some thorium mixed in here, too. //

Unimportant Wise, Aged Ars Veteran
5y
154
I am optimistic about the nuclear renaissance but I am concerned about labor shortages in the supply chain and among operators.

The premier modular reactor operator, the U.S. Navy, faces a critical shortage of skilled shipyard workers. Repair backlogs can run into year. New construction isn't meeting its goals. Subcontractors that make low volumes of critical parts are affected as much if not more.

It didn't use to be this way but capacity was cut back over the years after the Cold War. Shipyards were closed.

There's a public-private nonprofit entity receiving millions to recruit workers:
buildsubmarines.com

Join the Team Building the Next Generation of U.S. Naval Submarines
Take the first step to join our mission of constructing advanced U.S. Naval submarines. Discover numerous career opportunities across various disciplines and make your mark in this new era of manufacturing.

They have a comprehensive job board with jobs across the supply chain. They're advertising nationally.

New reactors will need the same people. //