Meet Powerwall, your home battery. 100% - Self-powered 0% - Grid-powered On a typical day, Powerwall and solar will meet all of your home's energy needs. Seamless backup power. With or without solar. Powerwall detects grid outages and automatically becomes your home's main energy source. Protect your home from the next power outage and keep your lights on, phones charged, and no puddles under the fridge. Self-Powered home. Just add Powerwall. Powerwall integrates with solar to store excess energy generated during the day and makes it available when you need it, minimizing reliance on your utility. Time-Based Control. A Smart Way to Use Energy. If your utility prices vary throughout the day, set Powerwall in Time-Based Control to maximize savings. Powerwall learns patterns in your energy usage and solar generation-- using stored energy to avoid purchasing high-cost electricity. Compact and Simple Powerwall is a completely automated system that installs easily and requires no maintenance.