The CLEAR Act directs the Department of Energy to develop a comprehensive plan and program to research, test, and commercialize technologies that reduce greenhouse gas emissions at oil refineries and fuel production facilities. Within 180 days of the law's enactment, the Secretary of Energy must submit a report to Congress outlining opportunities for developing and deploying technologies such as advanced catalysts, hydrogen firing, waste heat recovery, and carbon capture systems, along with a five-year plan to advance these technologies from laboratory scale to commercial use. The legislation authorizes the Energy Department to award grants for demonstration projects and engineering studies at qualified fuel production facilities, with preference given to applicants demonstrating strong financial standing, realistic construction schedules, and proven contractor experience. The bill provides $200 million in annual funding for these research, development, and demonstration activities. Importantly, the law clarifies that simply identifying a technology in the department's report does not automatically classify it as an adequately demonstrated technology under existing Clean Air Act regulations.