However, researchers are not sure whether the grid can handle the charging of multiple electric trucks at the same time in one place.Not like Electric car, The electricity demand is relatively low, and electricity will be distributed through the community. The electric truck fleet may put pressure on the distribution system.
Electricity distribution depends on substations serving small areas, usually on the order of a few square miles (although this varies with population density). If an area suddenly exceeds the capacity of the substation, it may cause a power outage. Accommodating more electric trucks without causing this problem may require major upgrades, which can be costly and take months or even years to complete.
Borlaug and his colleagues used data from real-world diesel truck fleets to model substation requirements. The team considered how far the trucks traveled and how long they stayed at the base to estimate the charging needs of the electric fleet.
“About 80% to 90% of the substations we studied can accommodate a fleet of up to 100 trucks without major upgrades,” Borlaug said. He added that if the fleet manages charging by choosing a slower speed to avoid putting pressure on the grid, there will be fewer substations that need to be upgraded.
However, the trucking industry has historically been slow to adopt new technologies, saying Ben Sharp, An analyst for the International Clean Transportation Council, a non-profit research organization that studies the transportation sector. Some states are considering encouraging or even requiring the electrification of fleets.
California Pass Stipulate In June 2020, most heavy-duty trucks sold by 2035 are required to achieve zero emissions. The state also has an extensive voucher system to subsidize the cost of purchasing new electric vehicles. You “cannot exaggerate its importance” California’s shipping regulations, Sharp said. He added that due largely to these plans, about half of all electric trucks currently on the roads of the United States and Canada are in California.
Other U.S. states are following California: In July 2020, 15 states signed New rules This requires all new medium- and heavy-duty vehicles to achieve zero emissions by 2050, with other targets being completed before the deadline.
Although short-range electric trucks seem to be relatively close to commercial reality, Some researchers It warned that it might not be technically or economically feasible to expand the range of electric trucks in the short term.
“You will definitely do short trips, there is no doubt about it, because the economy is good and everything is good,” said Vinkat Viswanathan, A mechanical engineer at Carnegie Mellon University. Viswanathan said that as batteries become cheaper and lighter, a truck that can travel about 500 miles between charges looks more realistic.