Since its connection to the grid at the end of 2019, this specific project’s power generation has significantly exceeded expectations and, according to customer feedback, is 9.35% higher than that of neighbouring projects with the same installed capacity, resulting in a profit increase for the client.
The project is located in the Vietnamese province of Khanh Hoa, 100 kilometres from Nha Trang. The terrain is level, and the plant, which is outfitted with LONGi Hi-MO 4m modules with 425/430W power output, has a total capacity of 50MW. The modules are connected to string inverters and installed on 2P permanent racks.
The project is adjacent to another 50MW Hacom power plant, both of which are linked to the same substation and have the same design power. Statistics on electricity generation from December 27, 2019 to January 8, 2020 was supplied. The plant employing LONGi modules had a daily power generating capacity of 245.8 MWh (about 4.91 kWh/kW), which was 9.35% greater than its neighbour.
Power generation data from January to April 2020 demonstrates that LONGi modules are highly reliable in humid subtropical environments. This is owing to stringent material selection and preparation methods that provide long-term stable operation in high temperature and humidity environments. The average daily power output per watt of the modules was 5.15kWh/kW, with the total power provided by the facility meeting the needs of around 50,000 local inhabitants. With the higher irradiation levels in the summer, the potential total power generation capacity would have been greater if the entire year had been included.
Using gallium-doped silicon wafers, modern cell technology, strict module material and process control, and serial reliability evaluation help keep LONGi Hi-MO series modules from degrading too much. This means that the modules generate power well and stay stable. Hi-MO series modules also did very well in tests by TÜV Rheinland QS China, RETC’s annual PV module assessment report, and pv magazine’s power generation demonstrations.
