Ireland is poised to enter a landmark energy partnership with Spain through the construction of a 1,000km undersea electricity interconnector that will enable both nations to share renewable power, including Spain’s vast solar output. The project, revealed by Minister for Climate, Environment and Energy Darragh O’Brien, represents a major step in Ireland’s strategy to enhance energy security, diversify supply, and strengthen its renewable energy infrastructure.

Speaking at a recent briefing, O’Brien confirmed that Ireland and Spain have been engaged in technical discussions for several months. A formal Memorandum of Understanding is expected to be signed by April or May next year, setting the framework for the design, financing, and delivery of the interconnector. The proposed cable would link Ireland directly to Spain’s grid beneath the Atlantic, creating a two-way flow of clean electricity to balance supply and demand across both countries.

Ireland’s energy system is approaching a critical point as wind power now provides a substantial share of its electricity, yet the country’s limited interconnections leave it exposed to supply risks. The planned link with Spain’s solar network would allow Ireland to import power during periods of low wind generation and, in turn, export surplus wind energy when available.

“An interconnector is important for an island nation like Ireland, so we can import and, in future, export renewable energy,” O’Brien said. “It reflects our commitment to building a sustainable and resilient energy future.”

The project also supports the European Union’s goal of creating a connected green energy market across member states, improving grid efficiency and energy independence. If realised, it would mark Ireland’s first direct electricity link to southern Europe and position the country as a key player in regional renewable trade.

Discover how Ireland’s link with Spain could redefine cross-border renewable energy collaboration in the full article.