3 Apr, 2020 Located in the Hongsibu District of Ningxia Hui Autonomous Region, the 50MW Mahuanggou Solar Plant is one of the first batch of ground-level photovoltaic projects to be invested in by the China Datang Group. The Hongsibu District is the largest concentrated area for ecological poverty alleviation in China and it is also a well-known grape growing base in the Ningxia Hui Autonomous Region.