The 99th session of the Electric Vehicles and the Environment Informal Working Group is scheduled for September 8-9, 2026, in a hybrid format with sessions at China Automotive Technology and Research Center Co., Ltd. (CATARC) in Tianjin, China. The agenda addresses UN GTR 22, UN GTR 21, and UN GTR 25, with discussions on fuel cell vehicle proposals, open items, verification results, alternative test methods, and battery replacement provisions. A reminder notes that UN GTR 25 amendment 2 must be submitted to GRPE-96 by December 2026.