To successfully ramp up reliance on electric vehicles over the next decade without overtaxing the power grids, more drivers will need to charge their cars during the day, a US study has found. The US state of California, which was the focus of the research, needs to drastically increase and improve public and workplace charging infrastructure that supports daytime charging, which can better utilize solar energy, according to the study from Stanford University, published in September in the scientific journal Nature Energy. Increased charging availability will also make electric vehicle ownersh…