The ACHP and eight other federal agencies developed a Memorandum of Understanding (MOU) regarding siting of transmission lines on federal lands in 2009. The MOU establishes a protocol among land managing agencies regarding the designation of a lead agency when multiple agencies are involved in a project. The MOU commits the ACHP to working cooperatively with participating agencies to ensure that these projects are fully considered under Section 106 of the NHPA without unnecessary delay.

Memorandum of Understanding Among the U.S. Department of Agriculture, Department of Commerce, Department of Defense, Department of Energy, Environmental Protection Agency, the Council on Environmental Quality, the Federal Energy Regulatory Commission, the Advisory Council on Historic Preservation, and Department of the Interior Regarding Coordination in Federal Agency Review of Electric Transmission Facilities on Federal Land