Says you, a heavier vehicle takes more energy to run. Using energy by storing it, then using that energy requires more energy.EV's are very efficient. And, there's no compelling reason to charge them with green energy. Sign up for off-peak (time-of-use) electric rates and charge it up overnight. This would actually save a lot of fossil fuel. My off-peak rate is $.056/KwH.
Laws of physics even apply to the inefficient EV's