# Is the Navy Getting Its First Shore-Based Microreactor at NWS Crane?

Yes — and the installation deadline is September 2028. The Department of Defense announced on September 11, 2026, that Naval Weapons Station Crane in southern Indiana will host the first microreactor ever deployed on a shore-based Navy installation. The project will be executed jointly through the Army's Janus Program, making it the first cross-service nuclear energy deployment under that initiative. It will also be Indiana's first power-producing reactor of any kind. The specific reactor developer has not yet been named — the DOD confirmed that one of the five companies already contracted under Janus will be selected, with the announcement coming at a later date.

Those five Janus-contracted developers are Antares Nuclear, BWXT Advanced Technologies, General Atomics Electromagnetic Systems, [Radiant Industries](https://smrintel.com/companies/radiant-industries), and [Westinghouse](https://smrintel.com/companies/westinghouse) Government Services. The microreactor at NWS Crane is framed explicitly as a [baseload power](https://smrintel.com/glossary/baseload) solution — providing "reliable, around-the-clock power independent of the commercial electric grid" to sustain critical operations.

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## Why NWS Crane and Why Now?

NWS Crane is a defense technology and weapons research installation in Indiana, operated by the Navy. Its selection is notable precisely because prior DOD microreactor activity has centered on Army and Air Force bases. The Janus Program was designed with cross-service applicability from the start, according to W. Jordan Gillis, assistant secretary of the Army for installations, energy, and environment, who stated: "Janus was designed from the beginning to deliver capability beyond the Army."

The announcement is tied to two of President Trump's executive orders on nuclear energy: "Deploying Advanced Nuclear Reactor Technologies for National Security" and "Reinvigorating the Nuclear Industrial Base." The DOD characterized the NWS Crane deployment as expanding U.S. power generation capacity and modernizing energy infrastructure — language that blends national security rationale with a broader industrial base argument.

For the Navy, grid independence at a sensitive weapons installation represents a concrete operational capability, not just an energy procurement decision. Shore installations have historically been considered lower nuclear-energy priorities compared to submarine and carrier reactor programs, making this a meaningful shift in how the Navy approaches fixed-site power resilience.

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## The Janus Program's Expanding Footprint

The Army's Janus Program is functioning as the DOD's executive agent for installation nuclear energy, a role that now clearly extends beyond Army property. The five developers selected last month cover a range of microreactor technologies and form a competitive pool from which individual base assignments are being drawn.

A DOD official confirmed to Nuclear News that "NWS Crane represents one of several more installations which will receive Janus reactors already contracted for." This signals that the five Army-base pairings announced previously are not the ceiling — additional installations across multiple services are in the pipeline.

The NWS Crane project is being executed with participation from multiple federal offices: the Army's Janus Program, the Office of the Assistant Secretary of the Navy for Energy, Installations, and Environment, the Office of the Under Secretary of War for Research and Engineering, and the State of Indiana. The Defense Innovation Unit is also cited as a participant, providing access to commercial innovation channels.

Indiana's state government is an active partner here, not merely a host. Officials have pursued nuclear opportunities aggressively, including launching an Advanced Nuclear Ready Communities Program and signing a nonbinding letter of intent with Eli Lilly to explore nuclear projects. Senator Todd Young (R., Ind.) underscored the political support: "Critical next-generation energy solutions for our warfighters will be located in Indiana, at Crane."

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## What Remains Unknown — and Why It Matters

The most operationally significant detail — which of the five Janus developers will supply the NWS Crane reactor — has not been disclosed. The DOD has only confirmed it will be one of the contracted five. This matters because the five developers represent meaningfully different technology approaches: heat pipe reactors, gas-cooled designs, and other microreactor architectures each carry different fuel requirements (including potential [HALEU](https://smrintel.com/glossary/haleu) dependencies), regulatory pathways, and deployment timelines.

The September 2028 installation target is ambitious by nuclear project standards, even for microreactors designed for factory fabrication and rapid deployment. The DOD acknowledged it "will continue to work with federal, state, and local partners to clear the required safety, environmental, regulatory, and installation processes" — a statement that implicitly acknowledges the regulatory runway ahead. The Army holds executive agent authority for DOD nuclear installations, which provides a defined regulatory structure, but the NRC pathway for each specific technology still requires careful navigation.

From an industry trajectory standpoint, this deployment is consequential beyond its individual megawatt output. A [first-of-a-kind (FOAK)](https://smrintel.com/glossary/foak) shore-based Navy installation creates a documented reference case for DOD microreactor operations that Army and Air Force programs alone could not provide. It also signals to developers that the serviceable DOD market extends across all branches — substantially expanding the addressable demand picture for the five Janus contractors.

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## Key Takeaways

- **NWS Crane** in southern Indiana will host the first microreactor on a shore-based Navy installation, with a target installation date of **September 2028**.
- The project is executed under the **Army's Janus Program**, marking the first cross-service deployment under that initiative.
- It will be **Indiana's first power-producing reactor** of any kind.
- The specific developer has **not yet been named**; one of the five Janus contractors — Antares Nuclear, BWXT Advanced Technologies, General Atomics Electromagnetic Systems, Radiant Industries, or Westinghouse Government Services — will be selected and announced later.
- A DOD official confirmed NWS Crane is **one of several additional installations** beyond the original five Army bases set to receive Janus reactors.
- The project is linked to two Trump executive orders on advanced nuclear and national security.
- State of Indiana is an active partner, not just a host jurisdiction.

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## Frequently Asked Questions

**What is the Janus Program?**
The Army's Janus Program is the DOD's vehicle for deploying commercial microreactors on military installations. The Army serves as the DOD's executive agent for installation nuclear energy. Five developers — Antares Nuclear, BWXT Advanced Technologies, General Atomics Electromagnetic Systems, Radiant Industries, and Westinghouse Government Services — were selected and paired with military installations. The program was designed from the outset to serve branches beyond the Army.

**Which company will build the reactor at NWS Crane?**
The specific developer has not been announced. The DOD confirmed it will be one of the five Janus-contracted companies, with the selection to be disclosed at a later date.

**When will the NWS Crane microreactor be installed?**
The stated target is September 2028, making this an approximately two-year execution window from the announcement date of September 2026.

**Why is this significant for the Navy specifically?**
Previous DOD microreactor activity focused on Army and Air Force installations. NWS Crane represents the Navy's entry into shore-based nuclear power — providing grid-independent, around-the-clock power for a sensitive defense technology and weapons installation, a meaningful operational resilience capability.

**Is Indiana currently home to any operating reactors?**
No. According to the DOD announcement, the NWS Crane microreactor will be Indiana's first power-producing reactor, making this deployment significant at both the federal defense and state energy infrastructure levels.

**How many total Janus installations are planned?**
The DOD has not disclosed a total count, but confirmed that NWS Crane is "one of several more installations" beyond the original five Army base pairings already contracted under Janus — indicating the program's footprint is larger than publicly announced to date.