Solar roof is perfect combination for battery storage. With larger surface area, solar roof tiles system can generate more power than current solar panel system. Just like conventional solar power system, this will power the home during the day and and the excess energy can be used at night. However the sheer production capacity of solar roof tiles mean you can cover even more energy that you use at night. Recent tests showed that with solar roof tiles and battery storage combination, a home only need to consume less than 1% of its total energy from the grid.