; and (B) may use grid-scale energy storage. (3) Microgrid system The term microgrid system means a standalone electrical system that uses grid-scale energy storage. (4) National laboratory The term National Laboratory has the meaning given that term in section 2 of the Energy Policy Act of 2005 ( 42 U.S.C. 15801 ). 11. Conditions on base realignment and closure activities funded through base closure account of Department of Defense (a) Consideration of factors required With respect to any Base Realignment and Closure round begun by the Department of Defense after the date of the enactment of this Act, the Department shall consider current and potential vulnerabilities to installations and operations of the Department of Defense resulting from climate change and the resiliency of installations of the Department as described in section 2(3)(B). (b) Base Realignment and Closure round defined In this section, the term Base Realignment and Closure round means base realignment and closure activities, including real property acquisition and military construction projects, as authorized by the Defense Base Closure and Realignment Act of 1990 (part A of title XXIX of Public Law 101–510 ; 10 U.S.C. 2687 note) and funded through the Department of Defense Base Closure Account established by section 2906 of such Act (as amended by section 2711 of the Military Construction Authorization Act for Fiscal Year 2013 (division B of Public Law 112–239 ; 126 Stat. 2140)). 12. Assistant Secretary of Defense and of the military departments for energy and climate resiliency (a) Assistant Secretary of Defense for Energy and Climate Resiliency (1) In general Section 138 of title 10, United States Code, is amended— (A) in subsection (a)(1), by striking 13 and inserting 14