The project was put to tender by the Marin Group, and Iberdrola's plant-engineering unit won the bidding this week.

The plant in Seville province will consist of 25 photovoltaic panels mounted on fixed structures and will use two of the latest photovoltaic technologies.

The new contract further strengthens the position of Iberdrola Ingenieria in the clean energy field, the firm said in a statement. Last year Iberdrola won nearly $500 million in renewable energy contracts.

Along with developing new electricity grid technologies and conventional power stations, Iberdrola has pledged to focus its growth in renewables through at least 2010.