The purpose of this UESC is to acquire energy and water conservation services, reduce energy or water consumption and associated utility costs, and reduce energy and water- related maintenance, repair and replacement (MRR) costs, as specified in each associated contract or task order (Contract). UESCs are used to obtain energy and/or water cost and/or energy unit savings through the implementation of various energy and/or water conservation measures (ECMs). As part of and in addition to achieving energy savings, UESCs may enhance the security and the resilience of energy and water systems, modernize infrastructure, and improve mission assurance through technologies including but not limited to distributed generation and energy storage technologies, continual/ongoing commissioning, and other technologies. MRR savings must be related to the ECM, that is, costs reduced or avoided by the implementation of one or more ECMs. The implementation period is the period between the date of Contract award and the date that all ECMs are completely installed/implemented by the Contractor, operational, and accepted by the Procuring Contracting Officer (PCO).