Well ackshually …

As others have mentioned pwoer transmission is a huge problem. You lose lots of power in the wires between here and there. So Australia has vast areas of desert, but if you put up an array of solar panels you can’t really transfer the power to where it needs to be used.

However, there’s a lot of investment presently in hydrogen tech. So instead of transferring power by wire, you use it to crack hydrogen out of sea water, and ship the hydrogen to where it needs to be used… in cars and houses.

There are problems in that hydrogen is difficult to store, but the industry is confident these problems can be solved or reduced. Hydrogen atoms are very small and will leak through most materials. It also makes containers brittle over time, so you need a strategy to manage that.

There’s a number of water cracking facilities in progress in Australia right now. The WGEH is a gargantuan project, although presently just in the planning phase.

I’m sure a number of experts will be along in a moment to tell me all the reasons why this isn’t really a thing that will happen. IDK why Hydrogen tech invokes so much derision. The story is that there’s too many problems with Hydrogen and that these projects are just a way to delay proper action on climate change. We will see I guess.