People dont understand how the electrical supply system works so the are easily fooled by solutions like solar and wind.
Here's how it goes.
Fundamental to the equation is that we dont have any effective way of storing a significant amount of electricity. Its not like water where you can pump a bunch into a reservoir or tower and have a supply on hand that can be ready for immediate delivery without the need to pump it or treat it.
When you flip a light switch you make an immediate demand on the grid that must be answered by some small amount of additional production from a generator at the other end of the wire. Effectively what this means is that you must have a layered system of energy producers.
Nuclear power plants and hydro dams produce huge amounts of power, but they cannot be throttled up or down every time you flip on a switch. So we depend on these kinds of resources for the baseline power demand that's always there, day or night.
Things like coal fired plants still cant throttle up and down that quickly, but can easily deal with changes like the day-night variation in power demand. So we depend on them for that middle strata of variable, but somewhat predictable, demand.
The small-sale demand, like you flipping a switch is handled mostly by gas turbine plants; these are effectively a jet engine in a box that is throttled up and down to generate exactly the right amount of power that the grid is demanding at that moment.
Now think about where solar and wind fit into this equation. Here you have a generator that comes on and off line unpredictably. One second the turbine is supplying the house's load that its attached to, plus it sending some supply up the line, the next second the wind dies, that supply it was generating gets subtracted from the grid, and the load that the house was pulling is suddenly expected to be delivered from the grid. Effectively what you're doing is forcing the grid to rely even more on the least efficient, least clean, most expensive sources of power because the contribution of the wind turbines is so fickle. Solar is a little bit better because the weather is somewhat predictable, but it has some of the same flaws.
If you want to charge your car you should be pro nuke or hydro. Since most of that charging would happen at night, that load could easily be added to the baseline amount so the power generated would actually be clean. And you would really be beating the oil companies because you would not be doing it with hydrocarbons.
