Here’s the math. Suppose that, on a cold winter’s day in 2050, all 3.5 million EVs are connected to the state’s power grid. None are being driven and all are fully charged. And suppose that improved battery technology means each provides an average of 100 kWh of electricity. That’s 350 million kWh in total, or 350 gigawatt-hours (GWh). Sounds like a lot. According to the most recent forecast prepared by New York Independent System Operator (NYISO), which oversees operation of the state’s electric generating plants and transmission system, total electricity demand in 2050 will be just under 200,000 GWh. That’s...