The electricity network should be a public utility. Taxes should be used to make and maintain a network, not make a profit. If people can contribute to the network and decentralise generation, it shouldn't be a problem. It being a problem is an indication of a broken system.

It noted utility-scale solar plants were having to pare back generation or switch off entirely during such periods to avoid having to pay to maintain production.

Bro, generate hydrogen with that abundant energy! Then when solar can't provide energy (at night) and at the same time wind energy isn't available, you can generate energy from the hydrogen. Hell, with that abundant energy, you could create a whole hydrogen economy and tank the petrol economy - make it completely obsolete. How the fuck is this a problem?