Explore battery energy storage systems (BESS) failure causes and trends from EPRI's BESS Failure Incident Database, incident reports, and expert analyses by TWAICE and PNNL. There are two tables in this database: Stationary Energy Storage Failure Incidents – this table tracks utility-scale and commercial and industrial (C&I) failures. While BESS technology is designed to bolster grid reliability, lithium battery fires at some. . Between 2017 and 2022, U. energy storage deployments increased by more than 18 times, from 645 MWh to 12,191 MWh, while worldwide safety events over the same period increased by a much smaller number, from two to 12. It is instructive to compare the number of fail re incidents over time against the deployment of BESS.