If Tesla’s Powerwall is the “Lamborghini” of the solar storage industry, a small Brisbane company backed by University of Queensland researchers says it has hit on the formula to deliver the “Toyota”. “Fundamentally, the big thing we all need to be talking about as consumers is not batteries or whatever, but self-consumption – that is the itch we have to scratch,” Livingston said. The big thing we all need to be talking about as consumers is not batteries but self-consumption. The average solar-powered house consumed only 25-30% of the power it produced, the rest now fetching scant rates on the wholesale power market, he said. The Powerwall, with its Lithium battery, would take “self-consumption” to 57%. The Ouija system would better that at 61% and “about a third less in cost” than the Powerwall, Livingston said.
Guardian 23rd Feb 2016 read more »