Off-grid solar power Plant is the system with battery Bank, this type of power plants also stores DC electricity in batteries bank provided with the system. The addition of an inverter allows this system to convert DC electrical current coming from the batteries into AC (alternating current). AC is the appropriate current for common household appliances.
An off-grid system is not connected to the electricity grid and therefore requires battery storage. An off-grid solar system must be designed appropriately so that it will generate enough power throughout the year and have enough battery capacity to meet the home’s requirements.

The high cost of batteries and inverters means off-grid systems are much more expensive than on-grid systems and so are usually only needed in more remote areas that are far from the electricity grid. However battery costs are reducing rapidly, so there is now a growing market for off-grid solar battery systems even in cities and towns.