Here is what Elon Musk tweeted about Nuclear Fusion
Whole Mars Catalog, a part 24 hour EV news channel tweeted “Imagine if someone just figured out nuclear fusion or something and then we had limitless clean energy ” and tagged Elon Musk.
Musk replied to the tweet by saying that Given the difficulty of collecting and transporting the source fuel as well as maintaining the reactor, fusion would be a costly energy source. It is far preferable to use the Sun’s thermonuclear reactor, which requires no maintenance or refueling. The primary solution to a sustainable energy future is solar/wind with batteries for when sun doesn’t shine or wind doesn’t blow, interconnected with conventional high voltage lines. No unknown technology is needed! Hydro+geothermal+fission will also be non-trivial contributors, he added.
Fusion would be expensive energy, given difficulty of obtaining and transporting source fuel, plus maintaining the reactor.
Far better to use the Sun – thermonuclear reactor with no need to refuel or service.
— Elon Musk (@elonmusk) September 8, 2022