Solar power can be stored in batteries. This is done in systems that are grid-tied with battery backups and in off-grid solar systems.
With this approach, the panels convert the sun’s energy into DC power, which then travels into the batteries and is stored until the home uses the energy. This makes it possible to operate independently of the Electricity grid.
Of all of the solar systems installed worldwide every year, less than 1% of them utilize battery technology to store the solar energy. Batteries are currently too expensive and unreliable for most homes. The large electrical loads most homes have (like air conditioning, clothes dryers, water heating, etc) require too much immediate power to pull it all from batteries. Instead, they use a method in which the system is connected to the grid.
