The Army issued a request for proposals last week for alternative energy to help meet the Department of Defense’s goal of producing or procuring 25 percent of its electricity from renewable sources by 2025. The contracts, for 2.5 million MW of energy by type, including solar, wind, biomass, geothermal, and potentially fuel cells and ocean oscillation systems, will be issued on an indefinite delivery and quantity basis and could total up to $7 billion if all options are renewed.