Amazon and AEP Explore 960 MW Advanced Nuclear Project in Indiana

A nuclear proposal tied to rising power demand

Amazon’s proposed Indiana nuclear project points to a broader shift in how large technology companies secure electricity: pairing long-term demand with new generation built for the grid. American Electric Power (AEP), X-energy and Amazon have agreed to assess a 960 MW facility near the former Breed Generating Station, a coal plant site in Indiana. Amazon would help fund development and become the plant’s first power customer if it’s built. That arrangement gives the proposal a direct link between a major electricity buyer and a planned source of supply, though an agreement to assess a project is still an early step.

The companies’ approach reflects a practical challenge for data center operators and utilities alike: electricity demand can grow faster than new generation can be developed. Long-term customer commitments can help make a large project easier to evaluate, because they indicate that a buyer expects to use the power over time. But they don’t settle the project’s financing, construction schedule or final costs. Here’s the thing: the commercial structure is part of the proposal, not proof that the plant will be built.

A 12-reactor plan for a former coal site

The proposal calls for 12 Xe-100 small modular reactors, each rated at 80 MW. They’d be arranged in three groups of four, adding up to 960 MW. AEP and X-energy will evaluate the project; construction and commercial operation depend on a final investment decision. The scale is notable for a design made up of smaller units: the plan would combine many reactors at one site to reach the stated output.

Using a former coal plant site gives the project a defined location, but the source doesn’t establish what existing facilities or infrastructure could be reused. That distinction matters. A site’s history may make it a logical place to study new generation, but it doesn’t by itself resolve the engineering, development or investment work needed for a nuclear project. The proposal remains subject to those decisions.

Amazon says a long-term power purchase contract would cover the facility’s costs and operating expenses for the duration of the agreement. The companies say the project could add jobs, broaden the local tax base and support Indiana’s energy infrastructure for more than 60 years. Those benefits remain contingent on the project proceeding. For local communities, the promised economic effects are therefore tied to a chain of future steps, beginning with the companies’ assessment and ending, if approved and completed, with a working facility.

For AEP, the development plan is a response to rising electricity demand and the need for steady, around-the-clock generation. “With this development plan, we are working to bring together the resources to help meet unprecedented growth in energy demand with reliable baseload power while protecting affordability for existing customers,” said Bill Fehrman, AEP’s president and CEO. The affordability point deserves attention: adding large new loads can put pressure on utility planning, while new generation requires substantial investment. Whether this arrangement protects existing customers will depend on how the project is financed and how its costs are allocated.

What X-energy’s reactor design involves

Rockville, Maryland-based X-energy, founded in 2009, is developing both reactor and fuel technology. Its Xe-100 is a high-temperature gas-cooled reactor designed to operate above 750°C. The core contains more than 200,000 TRISO-X fuel pebbles, which move through it continuously under gravity, allowing operation without fuel interruption for 60 years. That long operating period is a feature of the design as described by the company, and it gives the project a different planning horizon from a power source that depends on frequent fuel replacement.

Each TRISO-X particle encases uranium in a protective coating designed to withstand high temperatures and limit the release of radioactive material. Helium carries heat from the reactor core; that heat turns water into steam to drive a turbine and generate electricity. These design details explain the basic path from reactor heat to electricity, but they don’t answer every question a project must address before it can operate. Development, investment and construction decisions still lie ahead.

The design’s smaller unit size is intended to make deployment more flexible than conventional nuclear plants, though the Indiana proposal still needs to move through development and investment decisions. A multi-unit layout also means the proposal’s full output depends on building and operating a group of reactors at the site. This is more significant than it looks: the headline capacity describes the planned facility as a whole, while the project’s progress will be determined by the decisions made along the way.

Amazon expands its nuclear pipeline

The agreement extends Amazon’s work with X-energy. Amazon’s Climate Pledge Fund led a $500 million financing round for the company in 2024. The two companies have also agreed to pursue more than 5 GW of projects across the United States by 2039. Those figures show that the Indiana proposal sits within a larger effort, but a portfolio target and an individual facility are different measures: neither establishes how many projects will reach construction.

The Indiana plan adds to Amazon’s recent nuclear commitments as the company seeks power sources beyond renewables for its sustainability goals and growing electricity needs. Last month, Amazon signed a 20-year, 690 MW power purchase agreement with Constellation Energy to expand and improve the Calvert Cliffs nuclear plant in Maryland. Together, these agreements show Amazon pursuing nuclear power through more than one route: supporting a proposed new facility in Indiana and contracting for output connected to an existing plant in Maryland. The distinction matters because the Indiana project still faces development and investment decisions.

Josh Weissman, Amazon’s vice president of Data Center Infrastructure Capacity Delivery, said the Indiana project could supply “nearly a gigawatt of carbon-free power for the regional grid” while having Amazon pay its full costs. X-energy CEO Clay Sell described the work as a collaboration drawing on AEP’s nuclear operating experience and Amazon’s expertise. Those statements set out the partners’ case for the project; the practical test will be whether they can turn the proposed scale into a financed, operating plant. If you’re working in this space, the key question is how a customer commitment translates into a project that can be delivered.

What the proposal could mean for the grid

The plan puts a large technology buyer, a utility and a reactor developer in the same development effort. That combination could help align a project’s expected supply with a customer’s demand, while leaving the facility connected to the regional grid as described by Amazon. And yet, the announcement doesn’t establish the project’s final investment decision or commercial operation. Those are the milestones that will show whether the proposed arrangement can support construction at the scale described.

The case for the project rests on more than its potential output. It also depends on whether the companies can meet the stated goals for cost coverage, reliable generation and local economic benefit as development proceeds. (And this is the part most people overlook.) A proposed long-term contract can provide a framework for paying for a plant, but the proposal’s claims won’t be demonstrated until the project advances. For now, the Indiana plan is a substantial commitment to assess an option, with its eventual impact still to be determined.

Still early. The next meaningful measure of progress will be whether the parties move from evaluation to a final investment decision.