Google Wins Planning Approval to Expand Dublin Data Center After Two-Year Appeal

Google has secured planning permission from An Coimisiún Pleanála to expand its data center campus in Dublin, Ireland, ending a protracted dispute with local authorities that had stalled the project for more than two years. The decision marks a significant victory for the cloud and search giant as it seeks to scale its infrastructure in a country that has become a key European hub for hyperscale computing.

The approval, first reported by The Irish Times, allows Google to construct a new 72,400 square meter (779,310 square foot) data center building at its existing Grange Castle Business Park campus in South Dublin. Google originally submitted its application in June 2024, but South Dublin County Council denied planning permission that August, citing insufficient capacity in the electricity grid, a lack of significant on-site renewable energy to power the facility, and uncertainty surrounding Google's power purchase agreements in Ireland. The council also noted the absence of a connection to the surrounding district heating network as a factor in its refusal.

Google subsequently appealed the decision to An Bord Pleanála, now known as An Coimisiún Pleanála, arguing that it had already secured the necessary grid connection in 2021. The appeal was filed during a de facto moratorium on new data center applications imposed by state-owned grid operator EirGrid, which had stated it would not grant new application requests until 2028. Despite that backdrop, the planning authority has now granted approval, subject to a series of conditions.

Among the conditions Google must meet are demonstrating evidence of power purchase agreements ahead of development, using renewable fuel for backup generators, encouraging staff to use public transport, cycling or walking to work, and improving the ecological value of the site. The company has previously invested approximately €500 million ($535.3 million) in the Grange Castle campus, where it has operated data centers since 2012. Google announced plans to convert a warehouse at the site into a data center in 2011 and received permission for a second facility in 2014. The newly approved building would be the third data center on the site.

A Google spokesperson welcomed the ruling, stating: "Data centers are an essential part of Ireland's ambitious digital economy, and we want to support that. That's why we are grateful that An Coimisiún Pleanála has approved Google Ireland's appeal. We look forward to the next steps as we continue to invest in our infrastructure in the country to meet the growing demand for our services."

The approval carries broader significance for Ireland's data center sector, which has faced mounting regulatory scrutiny over grid constraints and renewable energy sourcing. The moratorium imposed by EirGrid has slowed new development across the country, and Google's successful appeal could signal a more workable path forward for operators willing to commit to power purchase agreements and sustainability conditions. As demand for cloud and AI services continues to surge across Europe, the decision may encourage other hyperscalers to pursue expansions in Ireland, provided they can address the grid and energy challenges that have become central to planning decisions.