; (2) an estimate of all energy consumption by the Department of Defense, including greenhouse gas emissions; and (3) an assessment of greenhouse gas emissions at all installations of the Department, disaggregated by operational and non-operational sources. (b) Metrics In determining energy consumption and greenhouse gas emissions under paragraphs (2) and (3) of subsection (a), the Secretary shall use metrics established by the Under Secretary of Defense for Acquisition and Sustainment, in consultation with the National Academy of Sciences and a federally funded research and development center. 6. Climate-conscious contracting of Department of Defense (a) In general Chapter 137 of title 10, United States Code, is amended by adding at the end the following new section: 2339b. Requirements relating to energy consumption and climate change (a) Projected energy consumption Each Department of Defense contract for the procurement of property or services entered into on or after October 1, 2019, shall include a written estimate by the Department of the total projected energy consumption of all work to be performed under the contract, and a statement of whether the contract will include investments by the contractor or the Department in renewable energy or energy-efficient sources. (b) Policy on consideration of certain factors in determinations To award contracts In making any determination to enter into a contract described in subsection (a), the Secretary of Defense shall take into account— (1) whether the contractor verifiably produces as much renewable energy as the total energy it consumes