No, I cannot, because in 20 years, cars and trucks will still be running on gasoline, or some other form of fossil fuel! We as a people consume too much energy to be made up by renewables! We are too greedy and too wasteful!
How many times have you gone into a room and seen the lights on, when nobody was in it?
How many times have you left the stove on a bit too long?
How many times have you seen waste of electricity all around you? Probably not much, if you never looked for it, but it is there, in spades.
The sun and wind are there, but they are fleeting. Weather.
But the fossil fuels are there, waiting. Because they are there forever until extracted.
It will take another oil crisis in this world to get people to get back to conserving energy. Otherwise, Wind and solar and wave energy and geothermal and spotted-owl blowjobs will not stop our desperate need, as a people, to consume as much energy as we can, and to waste half of it.