The price range for an outdoor energy storage cabinet typically lies between $3,000 and $15,000, depending on various factors, such as **1. additional features, and **5. Whether you're planning a solar integration project or upgrading EV infrastructure, understanding. . Areas with time-of-use (TOU) electricity pricing benefit from solar energy storage solutions that store energy during low-rate periods and discharge when rates peak. This "LEGO approach" to energy storage is. . This report is available at no cost from NREL at www. Cole, Wesley, Vignesh Ramasamy, and Merve Turan. Cost Projections for Utility-Scale Battery Storage: 2025 Update.