How electric vans can reduce fleet - Energy Saving Trust. Feb 23, 2022 · The Office for Zero Emission Vehicles’ (OZEV) plug-in van grant will pay for 35% of the purchase price for these vehicles, up to a maximum of £2,500 for vans <2.5 tonnes gross vehicle weight (GVW) or up to £5,000 for vans 2.5-3.5 tonnes GVW. Correct as of 16/12/21.