Tesla Motors Inc customer Clayton Lyndon, purchased half a dozen Powerwall batteries to create a Tesla ‘mini power station’ at home. This would be the first mini power station in Australia, notes a report from Business Insider. Lyndon, a Gold Coast man, had the batteries installed in his home to store power harvested by his solar panels. The stored power can be used later during inclement weather or at night.
First of its Kind in Australia
Natural Solar – an Australia-based company – performed the installation. In addition, the firm claimed that this setup – on the request of Lyndon – was the first residential power station of its kind in Australia. Also, Natural Solar claimed that it was one of the largest residential installations of Tesla Powerwall worldwide. Natural Solar performed the first installation in Australia in January 2016.
Chris Williams – the managing director of Natural Solar – said Lyndon’s system would be capable of generating around 36,355kWh each year. This level is likely to offset the complete energy bill of the home, and have it generating more energy that it uses, says Williams. Tesla batteries allow a reduction in carbon emissions, independence from the grid and ultimately financial savings, the executive said.
“The expectation is this customer will be able to save more than $13,000 per year on energy bills should he fully utilise all of the power generated from the panels,” Williams said. Based on the full consumption, Lyndon would break even in four to five years, Williams expect.
Payback on a Tesla Powerwall Install
The solar installer refused to disclose the overall cost of the six-battery installation; however, they did quote a starting price of $13,590 for a solar panel bundle and a primary Tesla Motors Inc Powerwall, notes BI.
In the early days of the Powerwall, savings are reportedly nowhere near enough to offset the cost of installation and the equipment. Last year, Lifehacker Australia calculated that with a maximum saving of approx $1.06 a day for a Sydney residence that charged its battery during off-peak hours, the system will need take around 25 years to break-even.
For a complete “off the grid” system, the payback time is 31 years, and this would require around two batteries, which cost close to $30,000, to maintain a household. The Tesla Powerwall that comes with a warranty of 10 years makes both scenarios uneconomical, says BI.
Also, another issue (sort of) with them is, Tesla power products – like its cars – have been marked by the production constraints. During the Q2 earnings call, Tesla CEO – Elon Musk – confirmed this saying, “We are heavily production constrained. We’ve got our next generation technology and we are trying to get up that production line so it’s gonna be heavily concentrated in Q4 and primarily in November and December.”