The U.S. Department of Energy’s (DOE’s) Gateway for Accelerated Innovation in Nuclear (GAIN) announced last week its second round of awards.  A number of these awards have gone directly to advanced reactor startups, and they hope to push forward a number of technologies related to advanced reactors or next-generation light-water reactors.

We wanted to take a little closer look at the awards in this post.  To explain, GAIN awards come in the form of “vouchers” which provide awardees “with access to the extensive nuclear research capabilities and expertise available across the U.S. DOE national laboratories complex.”  Some of the advanced reactor ventures that received vouchers include Elysium Industries, Kairos Power, Muons, Oklo, Terrestrial Energy, Transatomic Power, and others, covering a broad swatch of different reactor types.  One nuclear battery startup, named MicroNuclear, also received an award—nuclear battery technologies have been gaining traction, with the “U-Battery” consortium engaging with the Canadian Nuclear Safety Commission for pre-licensing review in March of this year.  In addition, a number of consulting and engineering companies also received awards, and the results from those projects could benefit a number of different reactor designs.

The most popular participating DOE laboratories are the Idaho, Argonne, and Oak Ridge National Laboratories, although Sandia and Pacific Northwest National Laboratories also will be partnering with certain awardees.  About half of the research projects touch on molten salt reactor technologies, focusing on topics such as different salt chemistries, thermal hydraulics, and waste reprocessing.  A number of awards focus on metal-cooled fast reactors (including regulatory support), and modeling and simulation issues.  Five projects also have a focus on light-water reactor technologies, exploring areas such as small modular reactor concepts and waste reprocessing.

For any questions related to next-generation nuclear reactors or the GAIN initiative, please contact the authors.