Yes, it's all well and good buying a Tesla to save the environment but it doesn't end there. When you charge your Tesla you are still killing the environment from using electricity if it isn't from a renewable energy source.
This is why I love the way this man charges up his Tesla Model 3. It is so good that even Tesla themselves tweeted about it. He uses 100% renewable energy from his hydro plant to charge up the car. Sure, it may take longer than one of the electric car manufacturer's Superchargers but it's the beginning of a better and more efficient future.
I am aware not everyone has access to a hydro plant but if we could, it would be very efficient. I did some research and apparently the average cost of electricity from a hydro station larger than 10 megawatts is 3 to 5 U.S. cents per kilowatt hour. A standard Tesla Model 3 has a 50 kWh battery so that equals a total cost of around $2.50. For a full charge! Admittedly, it may take a little longer than usual but it's worth it in my eyes.
We need to start doing all we can to save the planet!