HNSP was formed by Yingli Energy (China), a wholly-owned subsidiary of Yingli Green Energy, and two state-owned companies, Hainan Development Holdings and Hainan Provincial Water Conservancy & Hydropower Group to develop solar, wind, and hydropower projects in the island province of Hainan.

Today, HNSP is the largest solar project developer in Hainan. After several rounds of capital increases, Yingli Solar now holds a 27.7% stake in HNSP.

HNSP owns all of these solar projects, which were developed with a total investment of approximately RMB 1.4 billion ($231.5m). The installations include utility-scale power plants, residential and commercial rooftop systems, agricultural PV applications, building-integrated PV projects, and off-grid applications.

Two thirds of these solar projects are connected to the utility grid. In addition to serving as HNSP’s exclusive module supplier, Yingli Solar also provided EPC services for some of the projects.

Mr. Xu Xiangcheng, general manager of HNSP, said, "HNSP has been committed to becoming an excellent clean energy supplier to undertake social responsibility and provide green power for the society. We are deeply grateful to all parties involved for helping us make remarkable accomplishment in developing solar power projects, and especially to Yingli Solar, whose high quality modules and rich downstream experience were critical factors to our success. With the joint efforts of all parties, we believe HNSP will develop more aggressively and faster in solar project business."