my plan is to receive the energy in the desert and then transport it to the places where people live, nuclear power is ok too though
You need to generate a lot more power to transmit over long distances.
Our current power supplies put about 20kV into the system to get the 11kV we need in Sydney, and that's just to transmit over a couple hundred kms. If you want to do that over 1000kms you'll need double that.
I don't think people fully understand the scale required to generate power via solar. 11000V X 20A = 220MW. That's 4X larger than the array I posted, and only if it was based in Sydney.
You put that in the middle of the country and it'd have to be the size of the NT. And TWICE that, if you want to generate enough to store at night.
Nuclear is able to produce more than we will ever need, all the time, small enough to be built in the places it's needed and cheaper than pretty much any other power source.
Canada pays about 6c/kWh for electricity. We pay about 34c.