A Practice Note discussing financing structures and revenue strategies for battery energy storage systems (BESS). This Note explains how project sponsors can monetize BESS projects, which store electricity during periods of high supply and release it when demand is high. It examines various offtake. . In this article we consider the role and application of battery energy storage systems (BESSs) in supporting renewable energy power generation and transmission systems and some of the challenges posed in seeking to project finance BESS assets. Global energy storage capacity additions exceeded 15 GW in 2024, with lithium-ion battery costs declining 90% over the past decade to. . Large scale energy projects integrating battery storage require significant capital. While equity investors bring cash and risk appetite, debt typically funds 50-75% of project costs. In addition, it allows the facility to more closely align to. .