The proposed data center was originally set to be built in Killala, County Mayo, by Mayo Data Hub Ltd, a corporate entity operating as part of US-based firm Avaio Digital. Despite significant pushback from the local community regarding energy demands and environmental degradation, the facility had managed to secure planning permission last year. However, that approval has now been undone following a rigorous legal and administrative challenge, offering a rare piece of heartening environmental news for campaigners heading into the weekend.
Sally Rooney, the celebrated author and Mayo native whose novels have become a massive cultural phenomenon over the past decade, played a pivotal role in halting the project. Rooney lodged a formal objection to the proposed facility with the Mayo County Council. In her written submission, she argued passionately that granting permission for the facility would significantly increase national carbon emissions, create a dangerous risk of regional blackouts, and undermine Ireland’s broader climate commitments.
In her compelling objection, Rooney warned local authorities that climate change represents an immediate and unprecedented threat to the way of life in County Mayo and to the future of human life around the world. Her intervention followed a high-profile public essay published in November 2024, in which she penned a viral cri de coeur in the Irish Times. The essay opened with a grim and uncompromising assertion: if fossil fuels keep burning at their present rates, humanity is headed straight for an apocalyptic civilizational collapse.
The controversy surrounding the Killala project highlights a much larger national debate in Ireland concerning the rapid expansion of the digital infrastructure sector. Over recent years, the current Irish government has aggressively promoted the country as "the Silicon Valley of Europe," offering tax incentives, business-friendly policies, and a welcoming regulatory environment for multinational technology corporations. While this strategy has successfully attracted some of the world’s largest tech giants to establish their European headquarters on the island, it has also triggered severe infrastructural strains.
Data centers now account for nearly a quarter of the total electricity consumed in Ireland, a staggering surge from just 5 percent in 2015. This exponential growth has placed immense pressure on the national electricity grid, leading to repeated warnings from energy regulators about potential power shortages and increased reliance on fossil-fuel-generated energy. Despite these growing concerns, the Irish State moved last December to effectively lift a moratorium on new data center connections to the grid—a restriction that had originally been put in place in 2021 to curb the industry’s soaring carbon footprint.
For Rooney, stepping into the arena of political and environmental activism is far from new. Over recent years, the acclaimed author has emerged as one of the literary world’s most vocal advocates for international human rights, most notably regarding Palestinian rights. Her willingness to leverage her global platform for political causes was further demonstrated in August of last year, when she faced potential legal repercussions and the risk of arrest by vowing to support Palestine Action, despite the direct action group being classified as a proscribed terrorist organization in the United Kingdom.
The successful overturning of the Mayo data center planning permission stands as a notable victory for grassroots environmental activism and local community resistance against the relentless expansion of industrial tech infrastructure. As legal challenges and climate concerns continue to mount against similar facilities across the country, environmental campaigners hope that Rooney’s high-profile opposition will inspire other prominent public figures and authors to speak out against the proliferation of energy-intensive data centers sweeping across the landscape.
