This bill amends the Department of Energy Organization Act to establish a dedicated Office of Fusion within the Department of Energy. The primary goal of this new office is to advance both near-term and long-term fusion energy science and technology, aiming to meet the energy, environmental, and economic needs of the United States. It seeks to enhance national energy security and maintain U.S. leadership in fusion energy by fostering innovation and market adoption. The Office of Fusion will manage public-private partnerships to accelerate the research, development, demonstration, deployment, and market adoption of fusion technologies, with a specific target to begin construction of more than one private-sector fusion power plant by December 31, 2028. It will also consolidate existing fusion programs from the Office of Science and coordinate efforts across various Department of Energy entities to streamline commercial deployment. Furthermore, the bill mandates the development of a commercial deployment roadmap within one year, outlining strategies to overcome barriers and achieve key deployment milestones for fusion energy.