This is one mitigating factor to the documented issues I posted about the grid before. There are significant, known issues with the capacity (and declining capacity curve due to aging) of the power generation. Bringing renewables online is not likely going to solve this, in my view...at least not on the scale that's required in huge public projects. The resources and scale are too large to be able to replace existing plants that efficiently produce many more megawatts than a renewable project that consumes a lot more real estate.
However, if residential projects gain a lot more steam, people progressively taking their own house off the grid with private systems could really bend the curve in the other direction. You have to meet the replacement demand, plus population growth, PLUS this new demand for vehicle charging. That's daunting for the existing system.
You mean electricity doesn't come from the wall?
Seriously though........"replacement demand" was not, is not and will never be the primary concern for the wing nuts forcing this issue.