Generac PWRcell battery storage systems capture and store electricity from solar panels or the electric grid. The stored energy can be used off-grid during outages, during night time, or during peak demand times when the cost of utility power is at its highest, saving money on electric bills. 
Generac PWRcell is a modular storage system that includes lithium batteries, a battery storage enclosure cabinet, a hybrid solar inverter, and the PWRview app for monitoring. 
PWRcell can be upgraded with additional battery modules when energy requirements change. The system is customizable, and can expand up to 40 kWh of battery storage for 34.2 kWh of useable power at 80% discharge. Each single-phase, hybrid inverter can handle up to 10kW of PV DC solar input, and can deliver up to 8kW continuous AC output power. 
PV solar is the least expensive power source on the planet today. And PWRcell battery technology means that you can use no fossil fuels to power the home.