The system charges the battery when electricity prices are low or when surplus solar power is available. Here's what you need to know: Imagine this: a storm knocks out power in your neighborhood, but your lights stay on, your refrigerator keeps running, and. . PWRcell 2 lets you use solar and battery at the same time and allows a generator to recharge the battery, maximizing home backup power. PWRcell 2 includes an ecobee Smart Thermostat Enhanced, providing a convenient in-home display for viewing real-time energy flow, solar performance, battery status. . After capturing excess solar power generation throughout the day, backup batteries can then help run appliances, EV chargers, and other devices with stored power overnight, when grid electricity rates are at their highest, or during local power outages. To capture all the electricity produced by a. . A residential solar energy storage system is a battery-based solution designed for homes to store excess energy, typically generated by solar panels, or electricity drawn from the grid. These systems are built to optimize energy use by storing surplus power for later use during peak demand periods. . The number of options – from specialized component providers to all-encompassing ESS + smart circuit functionality – is unwieldy and often hard to pin down.