The BIGGEST problem with clean energy

You might want to investigate "Liquid Metal Battery" as maybe, in the end, a better solution to grid storage, not so much for a single home, but for solar farms or wind. This incredible technology came out of research at MIT.   As for renewable fuel, a humble plant that grows in saltwater could be planted on the coastline of 25,000 miles of desert lands and be used to both store excess CO2 in its roots, but also recreate a very clean oil in its seeds becoming a forever source of oil needed for not just energy but all the many other chemistry-related uses coming from it.