At the request of the Department of Energy (DOE), this report examines the SBIR and STTR programs at DOE, focusing on the effectiveness of DOE's SBIR/STTR processes and procedures on topic and awardee selection; DOE outreach efforts to SBIR and STTR applicants; collaborations created between small businesses and research institutions on account of the programs; a range of direct economic and non-economic impacts to awardees; and the role of SBIR/STTR programs in stimulating technological innovation and contributing to DOE's research and development needs, whether directly from awardees or indirectly through spillovers from other firms.