EAGL-1 nuclear reactor project has entered a crucial US regulatory phase as its 240-MW advanced reactor moves toward construction. First American Nuclear (FANCO) submitted a Regulatory Engagement Plan to the US Nuclear Regulatory Commission (NRC). The filing formally opened pre-application engagement for the lead-bismuth-cooled fast-spectrum small modular reactor.
The project forms part of a planned $4 billion development in Indiana. The wider development combines reactor manufacturing, nuclear energy infrastructure, and fuel-cycle facilities. FANCO has also partnered with major engineering and construction companies to advance commercialization.
The regulatory milestone matters because EAGL-1 uses an uncommon reactor architecture. It combines fast-spectrum operation with liquid lead-bismuth cooling. FANCO describes it as the only US reactor using this cooling technology.
EAGL-1 nuclear reactor project advances toward construction
EAGL-1 will generate 240 MW of electricity and 600 MW of thermal power. A standard six-reactor cluster could therefore deliver about 1.44 GW. FANCO says such a cluster could power approximately 1.5 million homes.
Moreover, the design targets a footprint about one-tenth that of conventional nuclear sites with comparable output. This compact configuration could support deployment near industrial customers and existing power infrastructure.
The reactor uses lead-bismuth eutectic as its primary coolant. Unlike sodium, the coolant does not react violently with air or water. Consequently, the design can operate at low pressure and avoid some complex intermediate systems.
However, lead-bismuth technology presents engineering challenges. Developers must address corrosion and radioactive polonium management during operation. These issues will remain important considerations throughout regulatory review and detailed design.
The regulatory plan does not represent a construction permit. Instead, it establishes a structured pathway for technical discussions and future regulatory submissions. FANCO expects the process to support eventual licensing and construction of EAGL-1.

EAGL-1 nuclear reactor project integrates fuel facilities
The EAGL-1 nuclear reactor project goes beyond power generation. FANCO plans integrated fuel fabrication and recycling facilities alongside the reactors. The arrangement would create a closed-fuel-cycle energy park.
The reactor can use uranium oxide, mixed-oxide, recycled uranium, and transuranic fuels. It can also operate with high-assay low-enriched uranium, providing additional fuel-supply flexibility.
FANCO designed the system to reprocess spent nuclear fuel and reuse valuable materials. The company says the approach could reduce long-lived nuclear waste by up to 95%.
Meanwhile, AtkinsRéalis will provide engineering, procurement, and construction management services. Its strategic alliance with FANCO covers EAGL-1 reactors, fuel fabrication, and recycling facilities across North America.
The 20-year alliance includes up to $250m in services during its first five years. AtkinsRéalis will also support testing, design reviews, and licensing validation.
Hyundai Engineering & Construction has also entered the project through a framework agreement with FANCO. Its initial scope covers balance-of-plant design, constructability reviews, and modularization strategies.
The companies will also explore Hyundai E&C’s future EPC role. This could strengthen the project’s construction delivery model as regulatory work advances.
FANCO targets initial power delivery by 2033. The company also plans its proprietary Bridge Power solution for customers requiring earlier electricity. That system initially uses gas-fired package boilers before transitioning to EAGL-1.
The project represents a different approach to advanced nuclear construction than Radiant’s transportable Kaleidos reactor. While EAGL-1 advances through US Nuclear Regulatory Commission engagement, the Kaleidos project is moving toward physical testing at Idaho National Laboratory.
The contrast highlights two emerging construction models: larger modular reactors supported by integrated fuel facilities, and factory-built microreactors designed for transportation to deployment sites. The Kaleidos project’s 1,000-mile journey to Idaho will test whether its modular construction concept can translate into practical deployment.

Project Fact Sheet
Name: EAGL-1 Small Modular Reactor.
Type: Generation IV fast-spectrum small modular reactor.
Focus: EAGL-1 nuclear reactor project.
Location: Indiana, United States, with the first deployment under development.
Proposed investment: Approximately $4bn for the wider Indiana development.
Electrical capacity: 240 MW per reactor.
Thermal capacity: 600 MW per reactor.
Cluster configuration: Six reactors.
Potential cluster capacity: Approximately 1,440 MW.
Reactor technology: Liquid-metal fast reactor.
Coolant: Lead-bismuth eutectic.
Fuel flexibility: UO2, MOX, TRU, recycled uranium, and HALEU.
Fuel-cycle model: Closed-cycle fuel recycling.
Waste strategy: Up to 95% reduction in long-lived nuclear waste, according to FANCO.
Manufacturing strategy: Factory-built and tested reactor modules.
Regulatory status: NRC pre-application engagement.
Regulatory submission: Regulatory Engagement Plan submitted in April 2026.
Target power delivery: 2033.
Supporting system: Bridge Power gas-to-nuclear transition solution.
Wider development: Nuclear manufacturing, reactor deployment, and integrated fuel facilities.
Project Team
Developer: First American Nuclear Co. (FANCO), developer of EAGL-1 and the associated deployment system.
Nuclear regulator: US Nuclear Regulatory Commission, overseeing the federal regulatory pathway.
EPCM partner: AtkinsRéalis, serving as exclusive EPCM provider for EAGL-1 projects in North America.
Construction partner: Hyundai Engineering & Construction, supporting early design, constructability, modularization, and potential future EPC delivery.
Indiana development partner: State of Indiana, working with FANCO on the planned nuclear energy park.
Fuel infrastructure: FANCO and AtkinsRéalis, developing integrated fabrication and recycling facilities.
Technology team: FANCO’s nuclear engineering and fuel specialists, supporting reactor design, licensing, and fuel-cycle development.
Future delivery structure: FANCO, AtkinsRéalis, and potential EPC partners will develop the construction framework as licensing progresses.

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