I've read that statement many times - can't believe a college educated person would make a statement like that. First, they don't consider overseas markets, and second, it assumes no new homes are built.
Environmental concerns would seem to favor burning coal where the combustion products can be economically dealt with,a d cleaner gas burned in homes and other small users .
Heating homes with electricity wastes two thirds of the energy compared with heating by burning gas in a modern high efficiency furnace.