The mission of the Department of Energy, Office of Nuclear Energy (DOE-NE) is to advance nuclear power as a resource capable of meeting the nation’s energy, environmental and national security needs by resolving technical, cost, safety, proliferation resistance, and security barriers through research, development and demonstration ﴾RD&D﴿.

Accomplishing this mission will realize the enormous potential of nuclear energy and maintain the United States’ historic leadership in the field. While many innovative ideas exist, the research, development and demonstration ﴾RD&D﴿ needed to bring these concepts to a commercial readiness level is traditionally lengthy and expensive.

Therefore, DOE-NE has established the Gateway for Accelerated Innovation in Nuclear (GAIN) to provide the nuclear community with access to the technical, regulatory, and financial support necessary to move new or advanced nuclear reactor designs toward commercialization while ensuring the continued safe, reliable, and economic operation of the existing nuclear fleet.​