With the system of off grid solar we come across the system of electricity production that itself is saved by battery bank. There if your system generates excess electricity then this electricity can be used as a backup and you can itself get compensated by saving your electricity bills. Another thing that counts is the use over a maximized number of products. As you are just using battery bank as an essential element alongwith some other things therefore we get a useful resource with the generation of electricity. For drawback the off grid solar has slot of expenses that are needed to be covered up. Here, the battery bank is an expensive product that is required as an essence. Apart from that the link to the utility is not available that makes it a difficult mechanism to follow. Sometimes when the system runs out then utility plays a valuable role. But, when it comes to the off grid solar you dont get any such system. Here, you are fully dependent over battery bank. In case of extreme weather conditions off grid can be a useless choice as it cannot overcome the energy use and just uses the battery bank.