Extresol 2

Group

General Info

Owner/s:

Cobra
GE
KGAL

Technology:

Parabolic trough

Country:

Spain

Status:

Operational

Purpose:

Commercial

Usage:

Electricity

Power:

50.00 MW

Start date:

April, 2010

Location:

Torre de Miguel Sesmero, Badajoz, Extremadura

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

Power cycle pressure:

100 bar

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 boiler - 15% max

Companies involved

Project developer:

Cobra

EPC:

Cobra
SENER

O&M:

Cobra

Key components suppliers:

Siemens
Solel
Flabeg
SENER

Suppliers details:

SENER (Parabolic troughs)

Siemens (Turbine)

Solel (HCE receiver tuebe)

Flabeg (Mirrors)

Dow Chemicals (HTF)

Lointek (Heat exchanger and steam generation)

Wika (pressure and temperature measurement)

ABB (Power automation for solar field and power block)

AKO (Electric tracing)

Flowserve (control valves)

CCI (Valves)

Dimasa (Polyester storage tanks)

GEA Iberica (Water-cooled Vacuum Steam Surface Condensers)

Ideas en Metal (Metal structures for solar field)

Magline (magnetic measuring technology for position detection parabolic troughs)

BValve (Valves)

Saidi (Valves)

Samson (Control valves)

Sindus (Coolig towers)

Smit

Comeval (Valves)

Imasa (Manufacturing, assembling and insulation for HTF pipes)

Pam Saint-Gobain (Water pipes)

Talleres Vaca (Boiling works)

Epsilon Tracing (Electric tracing)

Schubert & Salzer - BVALVE (Valves)

Laitu solar (Troughs cleaning and/or pressure testing)

MTS (valves)

Energia Gigjon (Metal sttructures)

Reyco (Valves calibration and/or other valves related works)

Esindus (Cooling towers)

Ensival Moret (Pumps)

Tedagua (Water treatment)

Socioeconomics

Generation Offtaker:

Endesa

PPA/Tariff:

Spain RD661/2007 Feed-inTariff - 25 years - 27 eurocent per kWh

Construction Employment:

600 jobs-year

O&M employment:

40

Other

Solar resource:

2 168 kWh/m2/yr

Solar resource source:

Meteo station

Other info:

The plant was initially owned by Cobra. In October 211, Cobra sold 93% to GE and KGAL for €111.1 million. The operation was approved by EU on March 2012.

General comments:

Documents and links:

Attachment	Size
Permit for Extresol 2 (Spanish)	94.81 KB
EU approval for acquisition by GE and KGAL	16.49 KB

Images:

Videos:

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