One of the bits of interesting news is that Amazon is funding the construction of a dozen small modular reactors at the site of an old coal power plant in Indiana.
Amazon is funding development of a proposed 960-megawatt nuclear plant in Indiana and would be the first customer to buy its power, the companies announced Monday. Utility company American Electric Power (AEP) would operate the plant. X-energy, which designs small modular nuclear reactors and went public in April, would supply the reactors.I have a feeling that this will be a common scenario of those building such nuclear plants to provide power for data centers: selling the excess to the electrical utilities. Since Jeff Bezos’ Amazon is doing this, I have no doubt that Bill Gates Terra Power will use the same model to power his data centers. Call it a “twofer” with the data centers getting the power they need while also making extra money selling power to the utilities. And since these reactors are relatively small compared to the One Big Nuclear Plant of the past and are modular in design and construction, the time to build will be much shorter and the costs a lot less since all of the module components are built on an assembly line rather than being custom built one at a time.
The new power plant would consist of 12 Xe-100 small modular reactors and be located on the site of a demolished coal power plant just south of Terre Haute. The deal is the second commercial agreement between Amazon and X-energy, and it’s three times larger than the first, which was announced two years ago.
Amazon has invested heavily in X-energy, leading a $700 million Series C-1 round in October 2024. The two companies have said they ultimately plan to build 5 gigawatts of new nuclear generating capacity in the U.S. by 2039.
Unlike many newly announced power plants, these reactors would be connected to the public electric grid, though Amazon says the power would also serve its data centers.
It must also be understood that there isn’t just one reactor technology being used. Some use a more traditional U235 type fuel cycle, some are using pebble bed gas cooled designs, some liquid metal cooled reactor designs, some molten salt reactor (MSR) designs, and some liquid fluorine thorium reactor (LFTR) designs. The one thing they all have in common is that they are not just knockoffs of granddad’s Generation II reactor designs. One of the nice things about the MSR and LFTR designs is that they can use the ‘depleted’ fuel from old Gen II reactors to fuel these new reactors. That can help eliminate the need to store that depleted fuel for 25,000+ years as is done now. We have tons of such fuel sitting in storage casks waiting to be put to use.
A lot of this technology is no longer on the drawing board. It is being built. Some reactors using the new designs have been built and have reached criticality, meaning a self-sustaining nuclear reaction, proving that the designs work. Here’s a look at what’s being done in the US:
It’s not just the US forging ahead with new nuclear power technologies. Believe it or not Denmark has also been a leader in one of these technologies.
I don’t recall seeing this amount of work being done on nuclear power since the early 1960’s. Sorry, I don’t have any memories of the ‘excitement’ of nuclear power in the 1950’s since I was too young. But I saw presentations made at school assemblies about the promise of nuclear power while I was in elementary and junior high school. That there isn’t just one path to create a nuclear power renaissance is promising. That there are also some states, mine included, that want to see such a renaissance, to see a resurgence in the use of nuclear power to meet our present and future energy needs is also promising.
Let’s hope it all comes to be.