An April 2019 fire and subsequent explosion which caused injuries to firefighters and destruction of a grid-scale battery storage system in Arizona likely started with an internal cell defect that caused the “preventable” incident, analysis has found.

Battery energy storage deployed at Cleve Hill, the largest solar farm planned in the UK to date, will be installed and operated in line with a safety plan agreed with local fire services and the national Health and Safety Executive.

The second draft of the US National Fire Protection Association (NFPA) energy storage system guidance on fire hazards and safe installation best practices for stakeholders has been published.