Plant	Shouhang Dunhuang Phase II
Location	China
Owner(s)	Shouhang
Capacity (MW)	100
Construction Start Date	2016
Construction End Date	2018
Generation Start Year	2018
Construction Cost ($)	3.04 bil
Cost pkWh ($)	4581.5
LCOE ($)	0.08
Heliostat Aperture Area (m²)	115.7
Heliostat Manufacturer	Shouhang China
Mirror Manufacturer	Shanghai Yaohua Pikington Glass Group
Mirror Model	Super clear float glass
Heliostat Dimension	10.8m x 10.8m
Heliostat Facets (C x R)	7x5
Solar Field Area (m²)	1400000
Heliostat Cost pm² ($)	130.9
Tower Height (m)	263
Receiver Fluid	Molten Salt
Receiever Manufacturer	Shouhang China
Receiver Model	External - Cylindrical
Number of Heliostats	12121
Tower Position (Lat/Long)	(40.062, 94.425)

General Plant Data

·       Location: China

·       Owner(s): Shouhang

·       Capacity (MW): 100

Source: https://helioscsp.com/china-shouhang-dunhuang-100-mw-molten-salt-solar-tower-concentrated-solar-power-plant-to-be-completed/

Plant Timeline

·       Construction Start Date: 2016

·       Construction End Date: 2018

·       Generation Start Year: 2018

Plant Costs

·       Construction Cost ($): 3.04 bil

·       Cost pkWh ($): 4581.5

·       LCOE ($): 0.08

Heliostat Design

·       Heliostat Aperture Area (m²): 115.7

·       Heliostat Manufacturer: Shouhang China

·       Mirror Manufacturer: Shanghai Yaohua Pikington Glass Group

·       Mirror Model: Super clear float glass

·       Heliostat Dimension: 10.8m x 10.8m

·       Heliostat Facets (C x R): 7x5

·       Solar Field Area (m²): 1400000

·       Heliostat Cost pm² ($): 130.9

Source: https://www.hbsinostar.com/news/exploring-the-super-mirror-power-station-dunh-42978873.html

Tower/Receiver

·       Tower Height (m): 263

·       Receiver Fluid: Molten Salt

·       Receiever Manufacturer: Shouhang China

·       Receiver Model: External - Cylindrical

Source: https://en.cspplaza.com/shouhang-dunhuang-100mw-towe-csp-plant-achieves-full-load-power-generation   

Source: http://www.cnste.org/html/xiangmu/2020/0228/6071.html

Plant Layout

·       Number of Heliostats: 12121

·       Tower Position (Lat/Long): (40.062, 94.425)

Source: https://www.google.com/maps/@40.0650349,94.4223379,3488m/data=!3m1!1e3?hl=en&entry=ttu

Local Environmental Conditions

This project is located in Dunhuang, China. Dunhuang is located in Gobi desert, which has an average precipitation of 38.9mm, the annual average wind speed is 2m/s, and average annual dust days about 5~6 days. The average temperature during a year is about 9.4 degree Celsius and the DNI is about 1777 kWh/m².

Lessons Learned

 

To achieve the expected economic value and the investment goals in a solar thermal power plant, it is essential to take on a leading role in technology development.   
In terms of design, the most significant challenge in solar thermal power plant design lies in the design of the molten salt system.
In installation, careful planning of the construction sequence is the most important part.
In the commissioning phase, it is important to place a strong emphasis on system coordination and joint testing within the solar thermal system.

Source:
“首航节能敦煌100MW塔式光热电站建设和运维过程中的实践分享 - CSPPLAZA光热发电网-太阳能热发电行业权威媒体商务平台！.” Cspplaza.com, 2019, www.cspplaza.com/article-15646-1.html. Accessed 23 Oct. 2023.