The GRID Act directs the Department of Energy to conduct research and development activities using quantum information science and quantum computing to strengthen the resilience, security, and efficiency of the nation's electric grid. The bill authorizes the Secretary of Energy to explore quantum applications in several areas including fault detection, grid security, integrated grid planning, grid optimization, energy storage, and energy market optimization. The legislation requires the Department of Energy to work with industry members, national laboratories, universities, and other research institutions to carry out these research activities. The bill does not specify dedicated funding amounts or timelines for the research program, instead amending the existing National Quantum Initiative Act to add electric grid resilience as a research focus area. This legislation would leverage advanced quantum computing technology to address potential vulnerabilities in the electrical infrastructure that supplies power to American homes and businesses.