II 116th CONGRESS 1st Session S. 2048 IN THE SENATE OF THE UNITED STATES June 28 (legislative day, June 27), 2019 Mr. King (for himself and Ms. McSally ) introduced the following bill; which was read twice and referred to the Committee on Energy and Natural Resources A BILL To require the Secretary of Energy to establish a demonstration initiative focused on the development of long-duration energy storage technologies, including a joint program to be established in consultation with the Secretary of Defense, and for other purposes.