We are already moving our electric grid to renewables. Wind and solar are both cheap sources of power, and have a lot of potential to account for more of the electric load. Putting electric on renewables, plus switching cars to EVs (charged by renewables) should eliminate 50% of that chart - and this is something we can pull off in less than 20 years. Some of the other 50% is also easy to switch to battery powered, but they are all small niches that each need to be worked on separately. (If you are in one of those niches please think about this!)