However with 4500 purposes for panels per thirty days solely seven per cent had been battery-coupled, which he referred to as “a fear”.
“We reside within the sunniest capital metropolis in Australia,” he mentioned. “With the Plico mannequin, everybody can generate, retailer and entry their very own sustainable vitality. You gained’t have to fret if there’s a blackout, or if the state authorities threaten to change off panels as a result of the grid can’t cope.”
However Photo voltaic Quotes founder Finn Peacock mentioned batteries couldn’t be justified from an financial perspective.
He mentioned a typical non-battery photo voltaic system would take round 4 to 5 years to pay for itself however a battery-coupled one would take round 13.
Predictions batteries would lower in value had not eventuated.
“You would purchase a Tesla Powerwall 2 for $9,000 in 2017, now that very same battery is nearer to $15,000,” he mentioned.
“Whereas photo voltaic battery costs stay so excessive they gained’t pay for themselves inside their guarantee interval.”
Finance professional Noel Whittaker mentioned the maths didn’t work out in homeowners’ favour.
“Photo voltaic batteries make you are feeling higher concerning the surroundings however the numbers don’t work,” he mentioned.
“The price of photo voltaic batteries are going up so till the value of electrical energy goes up additional and batteries come down in value it gained’t prevent cash on energy payments.”
There are exceptions, nevertheless. John Nossiter, his spouse and three younger kids just lately moved to a four-acre property within the Perth Hills and photo voltaic with battery made sense.
He mentioned theirs was a high-energy-consumption family with equipment, powered sheds, two scorching water methods, two air-conditioners and eight fridges.
“When there’s a bushfire, the facility is commonly the very first thing that goes and if you wish to keep and defend it’s extremely essential to have a supply of energy,” he mentioned.
Moreover, the world is susceptible to energy outages at evening so retaining the household snug and guaranteeing the lights stayed on for his kids’s wants was additionally an enormous driver.
Nossiter mentioned since putting in his system his electrical energy invoice had dropped from round $1200 in peak summer time to round $400.
Photo voltaic specialist with client advocacy group Selection Chris Barnes mentioned greater electrical energy costs made batteries extra enticing, significantly for households that used most of their vitality within the night.
“Photo voltaic panels are a no brainer when you have a very good roof for it and the cash to take a position,” he mentioned.
“We’ll get to the purpose quickly the place batteries will come down in value and be a extra economically viable choice.”
Sensible Vitality Council chief government John Grimes mentioned the WA authorities’s decision to close its coal-fired power stations by 2029 would drive funding in renewables and batteries.
“The coal-fired energy stations are clapped out, they’re actually outdated which suggests they’re costly to keep up and unreliable,” he mentioned.
“Constructing new photo voltaic and wind farms is much cheaper, particularly within the present local weather with the price of coal and gasoline rising by a staggering 700 per cent.
“Renewables is a transition we have to make urgently, for the sake of our planet and the financial system.”