GTOs mission is to increase geothermal energy deployment through research, development, and demonstration (RD) of innovative technologies that enhance exploration and production. Its vision is a vibrant domestic geothermal sector that contributes to a carbon-pollution free electric sector by 2035 and a net-zero emission economy by 2050 while providing economic opportunities and environmental benefits for all Americans. GTO supports geothermal energy RD activities in six research areas aimed at increased access, reduced costs and improved economics, and improved education and outreach about geothermal resources. DOEs 2023 Enhanced Geothermal ShotTM analysis concludes that with aggressive technology improvements in areas relevant to enhanced geothermal systems (EGS), geothermal electricity generation could provide 90 GWe of firm, flexible power to the U.S. electric grid by 2050. Building a clean and equitable energy economy and addressing the climate crisis is a top priority of the Biden-Harris Administration. This FOA will advance the Biden-Harris Administrations goals to achieve carbon pollution-free electricity by 2035 and to deliver an equitable, clean energy future, and put the United States on a path to achieve net-zero emissions, economy-wide, by no later than 2050 to the benefit of all Americans. DOE is committed to pushing the frontiers of science and engineering, catalyzing clean energy jobs through research, development, demonstration, and deployment (RDD), and ensuring environmental justice and inclusion of underserved communities. Geothermal power offers a unique value proposition to support the United States target of 100% carbon-pollution-free electricity by 2035 and a net-zero emissions economy by 2050. Traditionally, geothermal power is well understood as a clean, firm generation resource with a high capacity factor, 24/7 availability, and minimal land use footprint. Moreover, the advent of flexible geothermal operations and geothermal power coupled with storage technologies broadens the breadth of services that geothermal power could provide to a decarbonizing grid. This FOA supports the administration goals laid out above by catalyzing regional grid modeling studies that quantify the potential contribution of geothermal power in supporting an equitable4 transition to a future decarbonized grid and economy. The research and development (R) activities to be funded under this FOA will support the government-wide approach to the climate crisis by driving innovation that can lead to the deployment of clean energy technologies, which are critical for climate protection. Specifically, this FOA will quantify the value of geothermal power to a decarbonized grid.