When gas replaces coal, the electricity prices will go up because the gas price will reflect international export prices.
Whether or not the manufacture of PVs would have occurred in Australia is a moot point. We had the opportunity, it's gone now. However, recently UNSW have developed panels with 40% efficiency. That's another opportunity for Australia. But without major manufacturers here it's probably going overseas.
newsroom.unsw.edu.au
There are a number of renewable technologies that require further investment in r&d to improve their efficiency as well as commercialisation. Our country has access to all of them.
Visit the CEC resources hub to learn about renewable energy technology. Discover different types of clean energy and the advantages of renewable power.
www.cleanenergycouncil.org.au