installing municipal bus and light - duty vehicle fleets could save an average of 60 % in fuel costs , and maximising off - grid charging costs increase that figure to around 60 % , according to a white paper from California 's electric Power . The study revealed the top 25 US cities could all make significant savings if they electrified fleets . The findings are based on a metric offering a direct dollar per gallon - equivalent to charging costs . It said the metric can be used by electric fleet operators to identify the most cost - effective times to recharge their vehicles , as charging costs vary far more than petrol prices .
Electrifying municipal bus and light-duty vehicle fleets could save an average of 37% in fuel costs, and maximising off-peak charging could increase that figure to around 60%, according to a white paper from California's Amply Power. The study revealed the top 25 US cities could all make significant savings if they electrified fleets. The findings are based on a metric offering a direct dollar per gallon-equivalent to charging costs. It said the metric can be used by electric fleet operators to identify the most cost-effective times to recharge their vehicles, as charging costs vary far more than petrol prices.