The Federal Energy Management Program (FEMP) provides this tool to federal agencies seeking to procure solar photovoltaic (PV) systems with a customizable set of technical specifications. . This document has been published with the support of Andy Walker, Otto VanGeet, Tom Harris and Chandra Shah of the National Renewable Energy Laboratory (NREL). The material provides guidance for different ownership models including lease, Power Purchase Agreement (PPA), or Owner Build and Operated (OBO). It also includes contracting strategies for OBO projects. . The following specifications are similar to those used by several utilities in procuring photovoltaic systems. These specifications help insure the bidders turn in all relevant documents and are aware of expectations should they be awarded the contract. Each section is split into two parts – a. . Technology that stores electrical energy in a reversible chemical reaction Lithium-ion (li-ion) batteries are the most common technology for energy storage applications due to their performance characteristics and cost. The decrease in the battery's maximum capacity over time and through use. The. . If you're an EPC contractor, project developer, or a caffeine-dependent engineer scrolling through yet another article on energy storage photovoltaic bidding documents, welcome! You're likely here because: Consider this your cheat sheet for 2025's hybrid projects – where solar panels flirt with. .