popular articles

NANO Nuclear advances its portable reactor thanks to the GAIN program

NANO Nuclear receives support from the U.S. Department of Energy for its portable 'ZEUS' reactor, with technical collaboration from Idaho National Laboratory.

Please share:

NANO Nuclear Energy is benefiting from the U.S. Department of Energy’s (DOE) GAIN (Gateway for Accelerated Innovation in Nuclear) program to further develop its portable nuclear reactor, dubbed ‘ZEUS’.
The reactor, designed to operate without a coolant, uses an open-air Brayton cycle to dissipate the heat generated by the reactor core.
This technology could offer a compact, reliable energy solution for isolated areas or specific industrial applications.
The collaboration between NANO Nuclear and Idaho National Laboratory (INL) focuses on the evaluation and optimization of a key reactor component: the heat exchanger.
This partnership aims to model the thermodynamic behavior of the device to ensure efficient energy management.
This step is crucial to validate the viability of this technology before its possible commercialization.

The role of the GAIN program in supporting innovation

The GAIN program was set up by the DOE to accelerate innovation in the nuclear field by providing technical, regulatory and financial support to companies in the sector.
The vouchers awarded by this program enable companies to collaborate with DOE laboratories, such as INL, to overcome technological obstacles.
For NANO Nuclear, this collaboration is aimed at developing simulation tools capable of modeling heat exchanger performance.
Unlike direct funding, GAIN vouchers finance DOE laboratories, which contribute their expertise and technical resources to help companies achieve critical milestones in the development of their innovations.
This type of support is essential for technologies such as the ‘ZEUS’ micro-reactor, which require rigorous validation before they can be integrated into industrial applications.

Technical advances and prospects for the ‘ZEUS’ reactor

The ‘ZEUS’ reactor stands out for its ability to generate between 1 and 2 MW of electricity without the use of heat transfer fluids.
This micro-reactor concept aims to offer a portable, compact and easily deployable energy solution.
One of the key innovations of this technology is the heat exchanger, designed to operate with an open-air thermodynamic cycle.
This component enables the reactor to be maintained at optimum operating temperatures, while limiting the complexity and size of the system.
The partnership with INL will enable this design to be validated through detailed simulations and performance analyses.
These assessments are essential to ensure that the reactor can operate under real-life conditions, particularly in environments where decentralized, rapidly deployable energy solutions are required.
This technology could, for example, be used in rural areas or industrial environments requiring a secure, continuous power supply.

A strategic partnership with INL

INL’s expertise in nuclear technology assessment makes it an ideal partner for NANO Nuclear.
The laboratory has already collaborated with the company on previous projects, including the evaluation of the preliminary design of the ‘ODIN’ micro-reactor.
This working relationship has strengthened the technical credibility of NANO Nuclear’s projects, while providing independent validation of their technologies.
As part of the GAIN voucher, INL will develop a computer model to simulate the thermal performance of the heat exchanger.
The model will analyze energy flows, interactions between the reactor and the heat exchanger, and heat dissipation.
This information will enable NANO Nuclear to fine-tune its design before moving on to the next stage of development.

Outlook for the nuclear sector

The GAIN program and its initiatives in support of miniaturized nuclear technologies are part of a broader strategy of innovation in the US energy sector.
The ability to provide decentralized, modular and easily transportable energy solutions such as the ‘ZEUS’ micro-reactor opens up new prospects for a variety of industries.
Companies, particularly in the industrial or military sectors, could benefit from this technology for temporary installations or in areas with limited access.
The competitive advantage of the ‘ZEUS’ reactor lies in its portability and ability to provide reliable power without heavy infrastructure.
This type of micro-reactor could therefore meet specific needs where traditional power grids are absent or unreliable.
What’s more, the simplicity of its design reduces maintenance and operating costs, making it even more attractive to sectors seeking to optimize their energy resources.

Register free of charge for uninterrupted access.

Publicite

Recently published in

Energy group Enel partners with Ansaldo and Leonardo to form Nuclitalia, a joint venture focused on developing small modular reactor technologies as Italy considers a return to civilian nuclear power.
US-based Space Nuclear Power Corporation has been selected to design a fission reactor for nuclear electric propulsion in future military and civilian spacecraft.
US-based Space Nuclear Power Corporation has been selected to design a fission reactor for nuclear electric propulsion in future military and civilian spacecraft.
The small modular reactor (SMR) pipeline increased by 42% in Q1 2025, reaching 47 GW, driven by the growing demand from data centres, according to a report from Wood Mackenzie.
The small modular reactor (SMR) pipeline increased by 42% in Q1 2025, reaching 47 GW, driven by the growing demand from data centres, according to a report from Wood Mackenzie.
EDF and Siparex are mobilising a new €300 million investment fund to strengthen strategic companies in the nuclear supply chain amid industrial revival driven by the EPR2 reactor programme.
EDF and Siparex are mobilising a new €300 million investment fund to strengthen strategic companies in the nuclear supply chain amid industrial revival driven by the EPR2 reactor programme.
Aecon Kiewit Nuclear Partners will lead construction of North America’s first grid-scale small modular reactor, with commercial operation expected in 2030.
Russia and Vietnam have signed a nuclear roadmap aimed at strengthening technological cooperation, including a commercial nuclear plant and a scientific centre by 2030.
Russia and Vietnam have signed a nuclear roadmap aimed at strengthening technological cooperation, including a commercial nuclear plant and a scientific centre by 2030.
The French National Agency for Radioactive Waste Management has revised upward its evaluation of the Cigéo underground storage project, with a maximum potential cost of €37.5bn ($40.4bn) over 150 years.
The French National Agency for Radioactive Waste Management has revised upward its evaluation of the Cigéo underground storage project, with a maximum potential cost of €37.5bn ($40.4bn) over 150 years.
The European Commission has requested Prague to suspend the award of a CZK200bn contract to KHNP, citing suspicions of state aid that may breach European law.
The European Commission has requested Prague to suspend the award of a CZK200bn contract to KHNP, citing suspicions of state aid that may breach European law.
Czech justice has suspended the signing of a major contract between Prague and South Korea’s KHNP, following a complaint by French group EDF challenging the fairness of the Dukovany nuclear project tender.
Thanks to recent strategic agreements, Utah is establishing itself as a key regional hub for the development and production of Small Modular Reactors, boosting a rapidly growing industry at the heart of the United States.
Thanks to recent strategic agreements, Utah is establishing itself as a key regional hub for the development and production of Small Modular Reactors, boosting a rapidly growing industry at the heart of the United States.
The United States is multiplying energy agreements with Romania and Bulgaria, focusing on civil nuclear power and hydropower storage to deepen its influence in strategic regional projects.
The United States is multiplying energy agreements with Romania and Bulgaria, focusing on civil nuclear power and hydropower storage to deepen its influence in strategic regional projects.
U.S.-based Energy Fuels extracted 151,400 pounds of uranium in April, reaching an unprecedented level since the opening of its Pinyon Plain mine, while underground drilling reveals exceptionally high grades.
U.S.-based Energy Fuels extracted 151,400 pounds of uranium in April, reaching an unprecedented level since the opening of its Pinyon Plain mine, while underground drilling reveals exceptionally high grades.
The Nuclear Safety and Radiation Protection Authority (ASNR) will now publish its decisions and expert reports simultaneously, amid a controversial merger of nuclear oversight bodies.
The French Parliament has approved Bernard Fontana's appointment as CEO of EDF, paving the way for a new industrial phase in the nuclear sector under close scrutiny from public and industrial stakeholders.
The French Parliament has approved Bernard Fontana's appointment as CEO of EDF, paving the way for a new industrial phase in the nuclear sector under close scrutiny from public and industrial stakeholders.
Polskie Elektrownie Jądrowe signed a new agreement with the Westinghouse-Bechtel consortium to ensure the continuity of the development of Poland’s first nuclear power plant project.
Polskie Elektrownie Jądrowe signed a new agreement with the Westinghouse-Bechtel consortium to ensure the continuity of the development of Poland’s first nuclear power plant project.
Two French MPs have raised concerns over the massive cost overruns of the Hinkley Point nuclear project, describing it as a “financial sinkhole” for EDF, now fully owned by the State.
Two French MPs have raised concerns over the massive cost overruns of the Hinkley Point nuclear project, describing it as a “financial sinkhole” for EDF, now fully owned by the State.
The Chinese State Council has just authorized the construction of ten new nuclear reactors across five strategic sites, highlighting a massive acceleration in energy ambitions to achieve record installed capacity by 2025.
Axpo reconnected unit 1 of the Beznau nuclear power plant to the grid after two weeks of refuelling, marking the start of a new operating cycle for the Swiss facility.
Axpo reconnected unit 1 of the Beznau nuclear power plant to the grid after two weeks of refuelling, marking the start of a new operating cycle for the Swiss facility.
The Czech competition regulator has dismissed EDF’s appeal, confirming the selection of Korea Hydro & Nuclear Power for the construction of new nuclear capacity at Dukovany.
The Czech competition regulator has dismissed EDF’s appeal, confirming the selection of Korea Hydro & Nuclear Power for the construction of new nuclear capacity at Dukovany.
Trondheimsleia Kjernekraft AS was founded to lead a nuclear plant project based on several small modular reactors in the Trøndelag region, targeting up to 1500 MWe of installed capacity.
Trondheimsleia Kjernekraft AS was founded to lead a nuclear plant project based on several small modular reactors in the Trøndelag region, targeting up to 1500 MWe of installed capacity.
Japanese operator Tepco has completed the extraction of a second radioactive debris sample from the damaged Fukushima reactor, a critical technical step in a decommissioning project set to span several decades.
US-based enCore Energy continues to optimise its uranium project in Texas with a record installation rate and strengthened leadership team.
US-based enCore Energy continues to optimise its uranium project in Texas with a record installation rate and strengthened leadership team.
Framatome has commissioned a new facility in Romans-sur-Isère to secure long-term production of research reactor fuels and medical isotopes.
Framatome has commissioned a new facility in Romans-sur-Isère to secure long-term production of research reactor fuels and medical isotopes.
EDF reconnected the Flamanville EPR nuclear reactor to the power grid on 19 April, two days ahead of schedule, following a series of technical maintenance works and adjustments on critical components.
EDF reconnected the Flamanville EPR nuclear reactor to the power grid on 19 April, two days ahead of schedule, following a series of technical maintenance works and adjustments on critical components.

Advertising