Old joke: hold out both hands. Put 100% renewable energy in one hand and crap in the other, see which one fills up first.
The 100% “renewable energy”, because it comes from highly unreliable sources, is a sure ticket to assure that what power is produced will be far less than the flow that will meet the needs of a modern industrial civilization. Not only that, it shall have to be rationed, and the cost of production shall be far greater than the utilities will be allowed to charge the individual consumer.
Which means, it will have to be heavily subsidized, and only certain parties may receive priority in delivery of that energy.
And when there ain’t no more, there ain’t no more.