Ann: GNX Achieves First Energisation of Jemalong Solar Project, page-39

This is regarding Concentrated Solar Power not Photovoltaic. PV has the advantage that it can be used everywhere where there is sunlight (even when its cloudy), whereas CSP needs high direct radiation (to produce heat) which limits the ideal locations . Obviously KS1 has a very good location (North QLD) and Forbes is unlikely to perform as well but obviously the economics still stack up.

From the article: https://www.abc.net.au/news/2019-06-06/solar-innovators-forced-to-seek-clearer-skies-than-forbes/11176968

"CEO Craig Wood said the technology was now ready for a fully commercial expansion in the form of a 30 megawatt power plant, but would not be suited to Forbes' climate."Concentrating solar thermal benefits from bright sunlight, so on a day like today, when we've got plenty of cloud and intermittent cloud, that's not ideal," Mr Wood said."

:"Boasting a number of large traditional solar farms, Mr Loane said Forbes' future as a renewable destination was still bright"