Bruce Mountain, energy consultancy CME director claims the Tesla Powerwall 2.0 and rooftop solar panels can effectively make Australian homes cost-competitive with grid-powered homes. Mountain took a look at a hypothetical home in Adelaide, which he approximated would consume about 4,800 kilowatts hours of energy each year. He anticipated such a household would receive an electricity bill equivalent to the 77 market offers within the area, and went ahead to evaluate rates both before and after conditional discounts.
He also examined the various lifespans of clean technologies used, assuming a five kilowatt rooftop solar panel lasts for 20 years, and the Powerwall 2.0 lasts for 10 years.
Mountain’s findings were inspiring. The clean technologies would provide power at a price equal to market offers after rebates, and seemed cheaper than market offers before the rebates.
His article notes that, “This is astounding. A typical household in the suburbs of Adelaide can now meet its electrical needs with solar and battery storage for about the same amount they would pay on a competitive offer from the grid.”
Households receiving clean energy that is cost-competitive can do so partially because of the innovative Powerwall 2.0. In addition, Mountain says even though the cost of this battery was almost the same as that of Powerwall 1.0, it provides 100 per cent more storage capacity. Both the peak and continuous power increased with installation of Powerwall 2.0 by 40 per cent and 50 per cent respectively.
Mountain further remarked that the findings on his study about cost-competitive clean energy would either be exciting or frustrating based on vested interests of a reader.
