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i-DE, the distributor of Iberdrola España, and the Logroño City Council inaugurate a new underground substation in Cascajos
- i-DE, the distributor of Iberdrola España, and the Logroño City Council inaugurate a new underground substation in Cascajos
- The new underground electricity infrastructure of Iberdrola España's distribution company, with an investment of close to 6M€, improves the quality of supply to 80,000 Logroño residents and is environmentally integrated into the capital of La Rioja

The Mayor of Logroño, Conrado Escobar, and the Director of the Northern Region of i-DE – Iberdrola España's distribution company – Javier Arriola, inaugurated the new Cascajos electricity substation this morning following the work done to bury it.
Iberdrola España began work on this substation in the last quarter of 2021, as established in the agreement signed by the Logroño City Council and the company itself. The purpose of this agreement was to bury the Cascajos substation in the same location where it is currently located.
The mayor of the city said that ‘with the completion of this job we are culminating the first phase of the underground railway in Logroño, improving the whole environment and giving more urban spaces back to the city’.
Escobar also highlighted the improvements in the quality of electricity service for the residents of Logroño, in this case the south-central part of the city.
‘Thanks to the the City Council and Iberdrola España’s work together we have this new and important infrastructure that improves the Cascajos neighbourhood becauuse it allows us to complete the urbanisation of Miguel Delibes street and its surrounding area’, added Escobar.
The director of i-DE's Northern Region, Javier Arriola, stressed that ‘this substation that we are inaugurating today – with an investment of close to €6M – is a shared effort between Logroño City Council and Iberdrola España, equipped with the most modern technology, which will meet the electricity needs of 80,000 Logroño residents in the coming years’. Arriola added that, ‘we have also worked on aesthetic and urban integration and the free plot of land has been ceded to the council for the use and enjoyment of the local residents. With this new facility and the future Pedregales substation to serve future developments in the south of the city, Logroño will be well equipped to face the challenges of electrification’.
Iberdrola España contributed 1,500,000 euros plus VAT to the cost of this installation, and Logroño City Council contributed 4,395,533 euros.
The work carried out by Iberdrola España was divided into five phases: the first two involved dismantling the old installation; the third, the installation and connection of a provisional substation; the fourth, the construction of the new structure and its electrical elements; and the fifth, which culminated the project, the dismantling of the provisional substation.
Iberdrola España cedes the plot of land freed up after completion of the works (part for road use and part for public open space) to Logroño City Council free of charge.
This is a completely underground project. The installation is below the level of Miguel Delibes street and only the access buildings and ventilation columns are visible. The study of alternatives for the enclosure was carried out by Iñaki Ábalos and Renata Sentkiewicz. That study includes a careful architectural design that envelops these facilities in a novel way and contributes to Logroño continuing to improve aesthetically and functionally, perfecting the development of the Cascajos neighbourhood.
Cascajos Distribution Transformer Substation
The Cascajos Distribution Transformer Substation was installed in 1990 in what was still the Cascajos Industrial Estate to meet the increase in demand that could no longer be covered by the Varea and El Arco substations.
It currently covers a major part of the central-south part of the city with significant and ever-increasing energy demands.
The solution proposed for its maintenance at this point by burying it underground aims to increase people's safety, reduce environmental impact and improve supply quality, as well as reduce the surface area occupied by 50%.