TianJinTuanbo lake hot spring hotel 855 KWP photovoltaic power generation project, located at the core area of tourism characteristics in Tuanbo new town,16 kilometers south away from Tianjin city , which used the TianJinTuanbo lake hot spring hotel co., LTD's 18 buildings roof to lay the pv modules. The project total used 2850 blocks of 300wp monocrystalline silicon cell modules on the 13161 square meters' building roof. The scale of construction is 855 KWP and the grid voltage is 400v , adopting the 30kW series three-phase grid-connected inverter 27 sets and 6 sets of 4 in-1 out-bus boxes. The grid-connected mode is the self-use and the balance grid-connected mode. The full-capacity grid-connected work has been completed before September 30, 2017. Up to now, it has achieved good economic benefit and remarkable social effect.