Crescent Dunes

General Info
Owner/s: 
SolarReserve
Technology: 
Central receiver (power tower)
Country: 
US
Status: 
Operational
Purpose: 
Commercial
Usage: 
Electricity
Power: 
110.00 MW
Construction start date: 
September 2011
Start date: 
January, 2014
Location: 
Tonopah, Nevada
Generation: 
500.00 GWh
Technology

Solar field

Mirrors / Reflective surface: 
Flabeg
Heliostat aperture: 
62 square meter
Number of heliostats: 
17,170
Reflecting area: 
1 071 361 m²
Central receiver: 
Pratt & Whitney Rocketdyne
Receiver type: 
External - cylindrical
Heat Transfer Fluid: 
Molten salts - sodium and potassium nitrates
HTF Temp in: 
287ºC
HTF Temp out: 
565ºC
Tower height: 
164 meter (540 ft)

Power block

Storage Y/N: 
Yes
Storage type: 
two tank direct - Molten salts
Storage: 
10.00 Hours
Power cycle: 
Steam Rankine
Power cycle pressure: 
115 bar
Turbine: 
Alstom MT
Companies involved
Project developer: 
SolarReserve
EPC: 
Cobra
O&M: 
SolarReserve
Key components suppliers: 
Flabeg
Alstom
Suppliers details: 
Pratt & Whitney Rocketdyne (Technology provider)
Nabtesco (Solar traking drive)
Flowserve (Pumps)
Flabeg (Mirrors)
Alstom (Turbine)
IDOM (Basic and Detailed engineering of Power Block and Salt System)
BEROA (Tower construction)
Socioeconomics
Cost: 
800 million USD
Generation Offtaker: 
NV Energy
PPA/Tariff: 
25 years PPA agreement - USD0.135 per kWh
Construction Employment: 
1500 jobs-year
O&M employment: 
200
Financing: 
Santander
US Department of Energy loan guarantee - $737 million
ACS Cobra
Other
Solar resource: 
2 685 kWh/m2/yr
Solar resource source: 
NREL
Other info: 

The project is owned by Tonopah Solar Energy SLL.

The technology used in the project was developed by Pratt & Whitney Rocketdyne which has licensed it to SolarReserve

After Gemasolar (20 MW in Spain) this is the second large-scale plant to use molten salts as HTF and storage fluid.

Crescent Dunes tower - Picture: http://www.flickr.com/photos/donbrr/ Crescent Dunes tower - Picture: http://www.flickr.com/photos/donbrr/ Crescent Dunes tower - Picture: SolarReserve Crescent Dunes top of tower - Picture: SolarReserve
Videos: