DOE will administer the funding through its Tribal Energy Program and Office of Indian Energy.
The funding, which will be cost-shared, will help tribes to install the projects and do upgrades themselves.
DOE is soliciting projects for buildings that can displace electrical, heating or cooling loads by at least 15%. For clean energy systems, projects need to generate a minimum 50kW.
Tribal lands comprise nearly 2% of US territory but contain about 5% of all the country's renewable energy resources.
DOE