The U.S. Department of Energy (DOE) published a final rule implementing the Department's critical electric infrastructure information (CEII) designation authority under section 215A(d) of the Federal Power Act (FPA) on March 16, 2020. Through the publication of this final rule, DOE established administrative procedures intended to ensure that stakeholders and the public better understand how the Department would designate, protect, and share CEII. These procedures apply to anyone who provides CEII to DOE or who receives CEII from DOE, including DOE employees, DOE contractors, agents of DOE, and individuals or organizations who have been permitted access to CEII as well as non-DOE entities submitting CEII to DOE or receiving CEII from DOE. These procedures also apply to other Federal agencies seeking CEII designation and protection of information that agencies may submit to DOE.