2029. 2811. Authority to conduct energy resilience and conservation projects at installations at which certain energy projects have occurred (a) In general Subsection (k) of section 2688 of title 10, United States Code, is amended to read as follows: (k) Improvement of conveyed utility system (1) In the case of a utility system that has been conveyed under this section and that only provides utility services to a military installation, the Secretary of Defense or the Secretary of a military department may authorize a contract on a sole source basis with the conveyee of the utility system to carry out a military construction project as authorized and appropriated for by law for an infrastructure improvement that enhances the reliability, resilience, efficiency, physical security, or cybersecurity of the utility system. (2) The Secretary of Defense or the Secretary of a military department may convey under subsection (j) any infrastructure constructed under paragraph (1) that is in addition to the utility system conveyed under such paragraph. . (b) Department of Defense infrastructure resilience and readiness (1) Authority The Secretary of Defense and the Secretary of the military department concerned may utilize existing areawide contracts to procure utility services from a utility service supplier— (A) to support installation energy resilience and mission readiness