The batteries in EV’s are heavy, expensive and in many cases slow to charge, this results in many affordable EV’s having a limited range. Obviously, this reduces the usefulness of EV’s for many potential buyers. For EV’s to really take off, we need an extensive network of public fast charging stations (DCFC’s). However, the current fee structure of utility companies, especially the additional peak demand charges during hot summer months, can make up a substantial part of the electricity costs of a charging location, forming a significant roadblock for the future of EV’s.
In a recent study for EVgo, analyzing data from every charging session in 2016 from all 230 of EVgo’s DC fast charging stations in the state of California where half of all the nation’s EV’s are being used, Rocky Mountain Institute (RMI) found that with today’s EV market penetration and current public DCFC utilization rates, demand charges can be responsible for over 90% of electricity costs, which are as high as $1.96/kWh at some locations during summer months.
expand full story