"At this stage Tesla has the most cost effective product. Very soon, many other competitors will hit the market and prices will fall further... I believe the regulations will be changed soon, [but] it's frustrating red tape is holding up progress for a lot of homeowners. "There are other products available at a slightly higher cost, but I have confidence in the Tesla product," he said. A Western Power spokesman confirmed the two companies were now on track to finalising their application, and the Tesla Powerwall 2 would be available for installation in a matter of weeks. "Western Power's highest priority is to supply safe, reliable and efficient energy to the approximately one million customers connected our network. This focus extends to ensuring the third party energy options, like battery storage and solar panels," he said. "[It is important those] available to customers meet the current safety and regulatory requirements and do not impact the reliability of supply to all customers.