PV system can be off-grid, grid tie, or mixed. Off-grid system is completely independent and not rely on the grid. In these system-generated power into the battery or use it directly. Power generation in the grid system will be tied directly into the grid, you will get the credit it, but you draw from the grid late. Hybrid system uses two spare batteries and grid tie systems. All system elements are common only some form of inverters and solar panels themselves.
　　Solar panels
　　You buy solar panels, according to its output. The typical size of the house panel, including 200W and 400W. An installation of solar panels as part of the base panel, and your lines together in series or parallel plates. You may also need to add a solar tracker, mobile panels, in the direction of the sun, in order to obtain better results.
　　Charge Controller
　　You do not need a battery charge controller if you do not - that is, if the power supply straight into the grid, is a hybrid system. Charge controller, protection, monitoring how much they were charged and slow or even stop the flow in order to avoid overcharging batteries. This helps the battery last longer, so that they can effectively store what you have.
　　PV system components - battery
　　Off-grid or hybrid photovoltaic system most commonly used deep-cycle battery bank to store your solar panels to power. According to Northern Arizona sun and wind, deep cycle battery designed to perform without compromising its ability to 80%. Another benefit of deep cycle batteries is that they are maintenance-free, that is, you do not have to keep first-class water drove them off.
　　Inverter
　　Inverter to convert DC current from the house or the use of solar power panels and batteries to AC. If grid electricity is used, you need a special grid with the inverter. Grid tie inverter power stage, you have the power to match. Without it, will effectively cancel the phase mismatch, and the other is useless.
　　Grid tie inverter can also serve as a safety device, if there is power outage, it will immediately turn off the supply of solar panels, so you have power without prejudice to the workers tried to repair the power cord.
　　Other PV system components
　　Cable, fuses and switches are a standard part of photovoltaic power generation system settings. If you have a grid tied system, you also need a meter to monitor what you generate additional electricity. You can use a special table, will be back, if you create a redundant or utilities, you may install a second meter to monitor what you produce.