Andasol-1

This page provides information on Andasol-1, a concentrating solar power (CSP) project, with data organized by background, participants, and power plant configuration.

Andasol-1 is the first parabolic trough power plant in Europe. Located in southern Spain, this 300 million Euro power plant has been under construction since June 2006 and began operating in 2008. The nominal production capacity of 50 megawatts is enough electricity for up to 200,000 people. A two-tank indirect thermal storage system holds 28,500 tons of molten salt, and this reservoir can run the turbine for up to 7.5 hours at full load. Andasol-1 and two upcoming companion plants will help the Spanish power grid meet peak summer demand primarily caused by the high energy consumption of air conditioning units.
Status Date

Background

Technology
Parabolic Trough
Status
Operational
Location

Aldeire Granada
Spain

Lat/Long Location
37°
13'
50.83"
North
4'
14.08"
West
Land Area
200 hectares
Solar Resource
2136 kWh/m2/yr
Source of Solar Resource
Meteo Station
Electricity Generation
158,000 MWh/yr Expected/Planned
Break Ground Date
Start Production Date
Construction Job-Years
600
Annual O&M Jobs
40
PPA/Tariff Date
PPA/Tariff Type
Real Decreto 661/2007
PPA/Tariff Rate
27 Euro cents per kWh
PPA/Tariff Period
25 years
Project Type
Commercial

Participants

Developer(s)
ACS/Cobra Group
EPC Contractor
UTE CT Andasol-1: Cobra (80%) and Sener (20%)
Operator(s)
Cobra O&M
Generation Offtaker(s)
Endesa

Plant Configuration

Solar Field

Solar-Field Aperture Area
510,120 m²
# of Solar Collector Assemblies (SCAs)
624
# of Loops
156
# of SCAs per Loop
4
SCA Aperture Area
817 m²
SCA Length
144 m
# of Modules per SCA
12
SCA Manufacturer (Model)
UTE CT Andasol-1 (SKAL-ET)
Mirror Manufacturer (Model)
Flabeg (RP3)
HCE Manufacturer (Model)
Schott (PTR70)
# of Heat Collector Elements (HCEs)
11,232
HCE Length
4m
HCE Manufacturer (Model)
Solel (UVAC 2008)
# of Heat Collector Elements (HCEs)
11,232
HCE Length
4m
Heat-Transfer Fluid Type
Dowtherm A
Solar-Field Inlet Temp
293ºC
Solar-Field Outlet Temp
393ºC
Solar-Field Temp Difference
100ºC

Power Block

Turbine Capacity (Gross)
50 MW
Turbine Capacity (Net)
49.9 MW
Turbine Manufacturer
Siemens (Germany)
Output Type
Steam Rankine
Power Cycle Pressure
100 bar
Cooling Method
Wet cooling
Cooling Method Description
Cooling towers
Turbine Efficiency
38.10% @ full load (Percentage)
Gross Annual Solar-to-Electricity Efficiency (Percentage)
16%

Thermal Storage

Storage Type
2-tank indirect
Storage Capacity
7.5 hour(s)
Storage Description
28,500 tons of molten salt. 60% sodium nitrate, 40% potassium nitrate. 1,010 MWh. Tanks are 14 m high and 36 m in diameter.
Photo of four sections of parabolic troughs segmented by access roads, with each section having about 100 rows of troughs. The high-angle aerial perspective also shows the power plant facility amidst two trough sections, including two circular storage tanks.

Project Overview

Project Name: Andasol-1 (AS-1)
Location: Spain
(Granada)
Location: Aldeire (Granada)
Owner(s) (%): ACS/Cobra Group (100%)
Technology: Parabolic Trough
Turbine Capacity (Net):
49.9 MW
Turbine Capacity (Gross):
50 MW
Status: Operational
Start Year: 2008

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