Solar (Photovoltaic) grid-connection power generation system uses power networks as storage units without battery storage function. The system utilizes solar cell array to converse solar energy into DC current, which is inverted into AC current via grid-connection inverters. The AC current is distributed into power network for power generation.

Thanks to government's subsidy policy for network power price in grid-connection system, solar (Photovoltaic) grid-connection power generation system has been developed rapidly, and applied in various fields, such as roof grid-connection power generation and grid-connection project in spare space.