It doesn't. Please, please do yourself a favour and talk with someone in Colorado who is knowledgeable about building off-grid power systems in that area. The

It doesn't. Please, please do yourself a favour and talk with someone in Colorado who is knowledgeable about building off-grid power systems in that area. They will be familiar with existing battery systems that are less expensive and more capable than the Powerwall. If building an off-grid cabin is a realistic option with a Powerwall, it's realistic without it... and was realistic 10 years ago, too.