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Maine has become the first US state to approve a moratorium on large-scale data centres, pausing new developments above 20 megawatts amid rising concerns over energy demand, environmental impact and infrastructure strain. The legislation, passed in the past week, will halt approvals until late 2027 while a state-appointed council evaluates the sector's impact on electricity grids, water usage and local communities. The move comes as AI-led demand accelerates data centre investments across the US, with tech firms committing significant capital to expand capacity. The decision reflects growing resistance to hyperscale infrastructure, even as governments and industry continue to view data centres as critical to digital and AI ecosystems.
Maine has approved a moratorium on the development of large data centres, becoming the first US state to impose a statewide pause on such projects, with the measure passed in the past week amid increasing concerns over the impact of AI-driven infrastructure on energy systems and local communities. Advertisement
The legislation restricts the construction of data centres with power requirements exceeding 20 megawatts and is expected to remain in place until late 2027. During this period, local authorities will not be permitted to approve new projects falling within this category, effectively halting large-scale data centre expansion across the state.
The move comes in response to the rapid growth of data centre investments linked to the expansion of artificial intelligence and cloud computing. Industry spending in the United States has surged in recent years, with technology companies committing billions of dollars towards building hyperscale infrastructure to support data-intensive applications.
State lawmakers indicated that the moratorium is intended to provide time to assess the broader implications of such developments. A council will be established to evaluate the impact of large data centres on electricity grids, water resources, land use and household energy costs.
Concerns raised during legislative discussions included the high energy consumption of data centres, their potential to increase electricity tariffs, and their limited direct employment generation relative to their scale. Reports also highlighted apprehensions around land utilisation, particularly as such facilities often occupy large tracts that could otherwise be used for residential or commercial purposes.
Public sentiment has also played a role in shaping policy direction. Surveys and local opposition in several US states have indicated rising resistance to large data centre projects, driven by concerns over transparency, environmental impact and infrastructure pressure.
While Maine is not currently a major data centre hub, proposed developments in the state had triggered community-level opposition, prompting policymakers to take a precautionary approach. The legislation is now awaiting approval from the state governor, who has previously indicated support for certain exemptions, although these were not included in the final bill.
The decision is part of a broader national trend, with multiple US states considering similar measures or regulatory interventions as the AI-driven data centre boom accelerates. However, most such proposals have not progressed beyond initial stages, making Maine's move a first at the state level.
The moratorium highlights the growing policy tension between enabling digital infrastructure expansion and managing its environmental and economic impact. As demand for data processing capacity continues to rise globally, governments are increasingly required to balance growth in technology infrastructure with sustainability, resource management and community considerations.
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