29 Boosting Idaho power plant efficiency INL helped pioneer the concept of hybrid energy systems that integrate multiple energy sources to enhance efficiency. Researchers from INL are providing technical expertise to U.S. Geothermal through a $150,000 DOE-funded Small Business Voucher. The effort will help integrate solar energy into the company’s Raft River Geothermal Power Plant. A similar approach at a plant in Nevada has increased efficiency by generating solar power on hotter days, when geothermal energy generation is less efficient. INL will help integrate concentrated solar power and binary geothermal energy at Raft River to provide a lower, stabilized cost of electricity. The U.S. Geothermal plant is located in the Raft River community of southern Idaho.