Extresol 3

General Info
Owner/s: 
Cobra
Technology: 
Parabolic trough
Country: 
Spain
Status: 
Operational
Purpose: 
Commercial
Usage: 
Electricity
Power: 
50.00 MW
Start date: 
August, 2012
Location: 
Torre de Miguel Sesmero, Badajoz
Generation: 
170.00 GWh
Land area: 
200 hectares
Technology

Solar field

Solar Collector Assemblies - Trough: 
SENER SENERTrough
Mirrors / Reflective surface: 
Flabeg RP3
Number of SCAs: 
624
Number of loops: 
156
Number of SCAs per loop: 
4
Number of modules per SCA: 
12
SCA aperture area: 
817 m²
SCA length: 
144 m
Reflecting area: 
510 120 m²
Heat Collector Element (Tube): 
Solel UVAC2008
Number of HCEs: 
22464
Receiver type: 
Evacuated
Heat Transfer Fluid: 
Dowtherm A
HTF Temp in: 
293ºC
HTF Temp out: 
393ºC

Power block

Storage Y/N: 
Yes
Storage type: 
two tank indirect - molten salts
Storage: 
7.50 Hours
Power cycle: 
Steam Rankine
Turbine: 
Siemens SST700
Turbine efficiency: 
38.1% at full load
Cooling: 
Wet
Cooling method: 
Cooling tower
Power (gross): 
50.00 MW
Power (net): 
49.90 MW
Annual Solar-to-Electricity Efficiency (Gross): 
16%
Backup: 
Yes
Backup type: 
Natural gas for HTF heating - max 15%
Companies involved
Project developer: 
Cobra
EPC: 
Cobra
SENER
O&M: 
Cobra
Key components suppliers: 
SENER
Siemens
Flabeg
Dow Chemical
Suppliers details: 
SENER (Parabolic troughs)
Siemens (Turbine)
Flabeg (Mirrors)
Dow Chemical (HTF)
Heat 11 solar (Heaters, three units 15 MW each)
Comeval (Valves)
MTS (valves)
Reyco (Valves calibration and/or other valves related works)
Ideas en Metal (Torque Tube, Pylons, Drive Pylons)
Schubert & Salzer - BVALVE (Valves)
Magline (Magnetic positioning and detecting equipment)
Saidi (Valves)
Esindus (Cooling towers)
Ensival Moret (Pumps)
Tedagua (Water treatment)
Socioeconomics
Generation Offtaker: 
Endesa
PPA/Tariff: 
Spain RD/661/2007 Feed-in-Tariff - 25 years - 27 eurocent per kWh
Construction Employment: 
600 jobs-year
O&M employment: 
40
Financing: 
BBVA (Mandated Lead Arranger)
Other
Solar resource: 
2 168 kWh/m2/yr
Solar resource source: 
Meteo station
General comments:
Documents and links:
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