$IDVV System designer Jason Andrade brings over 13 years of experience in solar power and renewable energy installations. He built 120 projects/ He works with the best equipment available to create innovative off-grid systems that are state-of-the-art. Here is an example of one of his powerwalls. Jason said, “These are commercial grade power systems that rarely need to use generators, which are only there for emergency backup. The ratio of photovoltaic solar panels to the amount of lithium battery storage is more than enough to provide the power needed.”
https://finance.yahoo.com/news/top-solar-syst...00484.html