But city officials say they haven’t found electric garbage trucks that are powerful enough to plow snow.The department has ordered seven electric rear loader garbage trucks, custom-made by Mack and costing more than $523,000 each, with delivery slated for the spring.But officials say previous electric trucks tested by sanitation have not lasted longer than four hours plowing snow before running out of power, and the new electric trucks will be used for trash collection but not plowing snow.But New York City’s commitment to plowing each street puts the sanitation department’s 2,100 collection trucks to work each winter, clearing the equivalent of 19,000 miles of street lanes.While the city is trying to expand the network, “this charging infrastructure requires additional space and often new electrical utility connections that can require substantial capital investments,” she said."