This publication summarizes FERC audit findings from 2015 to 2024. This Renewables Spotlight examines the accounting for battery energy storage systems and for land lease costs during construction., with a widening array of stationary power applications being successfully targeted. This is an executive summary of a study that evaluates the current state of technology, market. . However, one crucial question remains: what does it really cost to build an energy storage power station, and what factors drive those costs? This article takes a closer look at the construction cost structure of an energy storage system and the major elements that influence overall investment. . provides the levelized cost of storage (LCOS). Volume 8, ovember 2022, Pages 8177-8185.