To amend the Energy Independence and Security Act of 2007 to reauthorize the Energy Efficiency and Conservation Block Grant Program, and for other purposes.

HR 4308 reauthorizes the Energy Efficiency and Conservation Block Grant Program through 2030, providing $3.5 billion annually for state and local governments to fund energy efficiency projects. The bill expands eligible uses to include infrastructure for alternative fuels and energy distribution technologies like district heating systems and distributed energy resources. It directs grants toward diversifying energy supplies and increasing efficiency, with administrative costs capped at 1% of annual funding. This program directly supports communities implementing clean energy initiatives under the 2007 Energy Independence Act.