The DOE Office of Indian Energy is soliciting applications from Indian Tribes, which include Alaska Native Regional Corporations and Village Corporations, Intertribal Organizations, and Tribal Energy Development Organizations to: (1) Install clean energy generating system(s) and energy efficiency measure(s) for Tribal Building(s) (Topic Area 1); or, (2) Deploy community-scale clean energy generating system(s) or energy storage on Tribal Lands (Topic Area 2); or, (3) Install integrated energy system(s) for autonomous operation (independent of the traditional centralized electric power grid) to power a single or multiple Essential Tribal Buildings during emergency situations or for tribal community resilience (Topic Area 3); or, (4) Provide electric power to unelectrified tribal buildings (Topic Area 4). The DOE Office of Indian Energy will award multiple financial assistance awards in the form of grants. The estimated period of performance for each award will be approximately from two (2) to four (4) years, including a 12-month mandatory verification period. Under the FOA, DOE’s Office of Indian Energy anticipates making awards that range from $100,000 to $2,500,000 or from $250,000 to $5,000,000, depending on the Topic Area. DOE will accept only new applications under this FOA. DOE will not consider applications for renewals or continuations of existing DOE funded awards through this FOA.