Ecoproyectos  

Parque Solar SPEX occupies a 195 hectare site between the municipal districts of Mérida and Don Álvaro. It is set in pastureland with very favourable conditions for the production of solar power, due to the lie of the land and grid accessibility.

In terms of its applied technology, using a dual axis sun tracker system, it is the biggest plant ever designed worldwide, with an output of 30 MW and a total investment of nearly 250 million euros.

Solar Parks of Extremadura, S.L is a 50% joint venture based in Badajoz, formed by the Extremadura company ecoEnergías del Guadiana, S.A. and the German bank Deutsche Bank AG. The solar park has been totally grid connected within the tariff range regulated by Royal Decree 661/2007, making it a local milestone and worldwide benchmark.

The park has a total output of 30 MW with a dual axis sun tracker system. The energy is fed into a 132 Kv high voltage transmission line through a new substation called "El Judío", custom built for that purpose.

The photovoltaic material has been handpicked with the most rigorous standards of quality and reliability in mind. Our collaborators are sector leaders at world level.

Supporting structure: The dual axis sun tracker has been entirely developed in Germany and has then been optimised and made by Grupo Eco specifically for this project, setting up an assembly site for that purpose in Extremadura. Each of the trackers is made up by a structure of high-resistance steel bearing a 130 m2 panel.

A new 132/15 kV substation called "El Judío", with an 80 MVA output has been built to lead off the power produced by the three plants. This substation is connected to the 132 kV "Mérida-Orellana" transmission line.

 

ENVIRONMENTAL BENEFITS

Annual figures:

  • It avoids the emission of 17,640 tonnes of CO2 that would otherwise be produced by oil-burning plant
  • It avoids the emission of 22,680 tonnes of CO2 that would otherwise be produced by coal-burning plant
  • It avoids the emission of 12,600 tonnes of CO2 that would otherwise be produced by gas-burning plant
  • Sufficient energy is produced for one year´s supply of 14,221 fourmember families (56,884 inhabitants)

Figures during the whole useful life:

  • It will avoid the emission of 606,375 tonnes of CO2 that would otherwise be produced by oil-burning plant
  • It will avoid the emission of 779,625 tonnes of CO2 that would otherwise be produced by coal-burning plant
  • It will avoid the emission of 433,125 tonnes of CO2 that would otherwise be produced by gas-burning plant
  • Sufficient energy will be produced for one year´s supply of 488,854 fourmember families (1,955,416 inhabitants)

Electricity producing system:
Photovoltaic modules: 170.000 nverters
Output: 5.625 off
Cabling: 1.400 kilometres
Inspection chambers: 2.350 off
Transformer centres: 21

Structure
Structural steel: 7.000 tons
Nuts and bolts: 1.300.000 off

Civil engineering work:
Trench digging: 60.000 metres
Volume of concrete: 25.000 m3
Weight of concrete: 60.000.000 kg
Perimeter fence: 7.100 metres
Earth moving for pathways: 75.000 m3
Length of pathways: 23 kms
Steel used: 23.000.000 kg
Sensitive area: 243.750 m2
Personnel: 500 skilled workers
Execution time: 7 months

Yield
With an energy generation ratio of over 2000 kWh per installed kW, the plant will produce 63,000 MWh (63 GWh) a year. During its whole useful life it will produce 2165 GWh.

 

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