**Acknowledgements**

shown in Figure 17. Conversion efficiency of 500 suns and 1000 suns terrestrial system can

The direct normal insolation (DNI) distribution of the local environment and the mapping of China were displayed Figure 18 (a) and (b). The I-V curves of 227 receivers using 500 suns terrestrial system module tested outdoor was shown in Figure 19. One can see that the effi‐ ciency could reach as high as 24.03% at the condition of much dust on the surface of the Fresnel lens, which affecting the light transmittance. Therefore, the actual efficiency should

**Figure 18.** The DNI distribution of the whole day in Golmud (a), and the annual average direct normal insolation (DNI)

reach as high as 25% and 28.5%, respectively.

466 Optoelectronics - Advanced Materials and Devices

**Figure 17.** power plant installed at Golmud Qinghai province China.

be high than this nominal value.

GIS data at 40km resolution for China (b) from NREL.

This work was supported by a foundation from the National High Technology Research and Development Program (863 program) of China. (No. 2012AA051402).
