The thing is, a commercial-scale fusion reactor could produce the same energy as a truly vast solar array, and also produces power at night, does not need to be

The thing is, a commercial-scale fusion reactor could produce the same energy as a truly vast solar array, and also produces power at night, does not need to be exposed to wind and rain to operate and can be scaled directly instead of with costly battery arrays. Solar has the upside of actually producing a power surplus already, though.