• success stories

EHN, beyond the wind.


The construction of the El Perdón wind farm by EHN in 1994 represented a milestone as a result of the introduction of innovative measures that were later replicated in wind farms all over the world.

In the next few years the company continued its growth through the installation of new wind farms in Navarra, all the while innovating and seeking excellence. It also installed a biomass plant through wheat straw combustion at Sangüesa and a photovoltaic solar power plant near Tudela.

At the same time, it began a program of national and international expansion through its participation in Energías Eólicas Europeas (EEE). As an initial international venture, it participated with 50% of the capital of La Compagnie du Vent in France.

In late 2002, Iberdrola withdrew from the stockholding structure of EHN and both companies decided to develop their own independent business projects. This operation led to the creation, by Sodena, Caja Navarra and Cementos Portland, of Corporación EHN (CEHN). In July 2003, Acciona acquired 50% of the capital of CEHN, the other 50% remaining in the possession of Sodena and Caja Navarra.

The entry of Acciona was a decisive boost to the incipient international process being undertaken by EHN, one that required major additional financial resources.

Therefore, at the end of 2004 Sodena considered its initial objectives achieved (and clearly surpassed), and sold its stake in CEHN to Acciona. The company that emerged from this operation was named Acciona Energía.


  • 1989 - EHN was created.
  • 1991 - Installation of the network of meteorological stations in Navarra.
  • 1992 - The company has 16 small hydro plants and 32 MW of installed capacity.
  • 1994 - The El Perdón wind farm was set up, a pioneer in Europe for its design and size.
  • 1996 - The Wind Power Plan for Navarra was approved, representing the construction of 16 new wind farms.
  • 1997 - Three new wind farms were opened on the Guerinda mountain range, making the complex the biggest in Europe.
  • 1998 - First deployments in other renewable technologies (solar, biomass) and the start of the internationalization process.
  • 1999 - Start of industrial production of turbines using in-house designs.
  • 2000 - EHN was awarded the Financial Times Prize as Best Renewables Company in the world.
  • 2002 - Corporación EHN (CEHN) was created.
  • 2002 - The company had invested around 1,500,000 euros, operating more than 1,000 MW of different technologies, making up a group with over 60 companies, 350 employees and a presence in 12 countries.
    Exit of Sodena.

An entire industrial sector linked to clean energies

Casoxito EHN fotoEMSodena promoted the creation of EHN and supported each and every one of the company’s initiatives as a partner for 15 years. This helped to make Navarra what it is today: an international benchmark, in the development of renewable energies, and EHN to consolidate itself as one of the leading companies in the world in the field.

It also favored the creation of a considerable industrial sector in our region linked to clean energies, the establishment of technical centers (CENER, CENIFER) and several other technological advanced that have consolidated Navarra as an international center of excellence in renewable energies.

Esteban Morrás Andrés
Former CEO, EHN
Former General Manager, Acciona Energía





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