Retail electricity price parity has indeed arrived in Australia - check Muriel Watts' presentation to the APVA, check the chart on page 11. http://www.apva.org.au/sites/default/files/documents/Releases/APVA%20EcoGen%202011%20presentation%20-%20Australian%20PV%20market%20at%20a%20crossroads.pdf
What are the take-homes? Residential PV of about 3kW and above is already cheaper than retail rates.
COAG and the Productivitiy Commission will have to recommend a standard FIT Australia-wide. The obvious one is parity with domestic retail tariff.
COAG and Productivity Comm. will also have to make a finding re allowing commercial PV (warehouse / shopping centre roofs) into the system at a fair price. See http://www.apva.org.au/ submissions.
What stays in the way? Government cupidity in the face of sunk cost in current electricity network Holders in the current generating stock who do not want to become peaking and evening shoulder balancers.
Remember, first they will ignore you, then they will laugh at you, then they will try to kill you, then they will live with you.
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