•  Even a modest system of solar plus one battery can power critical loads in a home for days at a time, practically anywhere in the country.
  • Larger solar and battery systems can help, but meeting demand during outages still depends on the weather, how energy efficient the home is and other factors.
  • Setting up solar and storage to provide backup power in a home or building takes extra work and it costs more – just one Powerwall can run from US$12,000 to $16,500 for a full system installation, before incentives and taxes.