Everphoton Energy has stated that its high concentration photovoltaic (HCPV) Paiwan II module has reached a conversion efficiency of 32.02%, which was confirmed by the Institute of Nuclear Energy Research (INER), the national research unit for the technology of HCPV under the Executive Yuan, Taiwan. Testing on the module was conducted indoors using the Helios 3198 module simulator with controlled factors such as temperature and humidity.
Everphoton notes that its Paiwan II uses receivers with “independent heat sink”, which is said to conduct high temperatures more efficiently. III-V solar cells are put on top of the independent heat sink with a high temperature resistant sealing glue, with an aim to allow a higher level of concentrated sunlight on the cell to be converted into energy more efficiently.
“Maintenance cost is always a nightmare to system integrator and solar farm operator because of partial efficiency decay or some short-cut cells in a module may need to be replaced with new ones. This is not only a cost issue but also a waste to our eco system,” said Eric Chen, CEO and president of the company. “Even with higher efficiency, the HCPV industry still struggles with higher pricing compare to PV, and this new design is a breakthrough on cutting down the cost of overall solar system. It makes HCPV a price competitive and environmentally friendly solar technology from the system efficiency and product lifetime aspects.”