Consider whether you experience frequent power outages if you live on the grid. If this is the case, a grid-tied system with batteries is the best option because it will provide emergency backup power if the grid is down. On the other hand, a grid-tied system will give you the benefit of solar energy and help you save money on your bills without having to buy solar batteries for home, which would cost between 20 and 30 percent more to build.
Read More