Hundreds of Upper Merion residents packed Freedom Hall at the township building on Wednesday night, lining up to push back hard against a developer's plan for a cluster of data centers that would total more than four million square feet of server space across Upper Merion and neighboring West Conshohocken. Neighbors, including parents, civic leaders and environmental advocates, warned that industrial-scale facilities could bring around-the-clock noise, bright site lighting, heavier utility loads and hits to nearby property values.
The projects are listed on the Upper Merion Planning Commission agenda and, according to the township's May 27 agenda materials from the Upper Merion Township, include a nearly 2-million-square-foot campus on Renaissance Boulevard, a 1.68-million-square-foot submission on Swedeland Road, plus proposals on Horizon Drive and River Road. As reported by CBS Philadelphia, the room was crowded and residents delivered sharp, sometimes fiery public comment opposing the developments. The planning commission will review the filings and is expected to forward recommendations to the Board of Supervisors.
In total, the submissions exceed four million square feet and were filed by a developer tied to Brian O'Neill, who has pursued similar projects in the region, according to reporting from the Suburban Realtors Alliance. Patch reports that emails obtained through a Right to Know request suggest the developer lobbied state officials for rules that would require opponents to post bonds equal to double a project's cost, a move critics say would make appeals prohibitively expensive. Critics also note that many of the applications were filed just days before Upper Merion enacted a tighter data-center ordinance, timing that opponents say could lock projects into older rules and that helped fuel Wednesday's turnout.
What's at stake
Opponents at the hearing pointed to studies and local experience showing that data centers can generate continuous low-frequency noise, heavy electricity and water demands and reliance on backup generation that carries air-quality and noise impacts, concerns raised in local reporting by Green Philly. The pushback in Upper Merion mirrors the fight over a separate 2-million-square-foot AI data center proposal outside Conshohocken that was recently resubmitted and has drawn broad opposition, according to The Philadelphia Inquirer. Organizers have circulated petitions and formed local groups to coordinate public comment and outreach ahead of future hearings.
Legal and zoning constraints
Township officials say they recently adopted a targeted ordinance intended to limit data-center impacts, but state planning law complicates any attempt at an outright ban. Under the Pennsylvania Municipalities Planning Code, projects filed before an ordinance change are typically reviewed under the rules in effect at the time of filing, which limits the township's ability to reject applications that otherwise comply with existing zoning, a point local coverage has stressed. MoreThanTheCurve notes that the Board of Supervisors has said it will work with the developer to voluntarily adopt advanced environmental standards, noise mitigations and visual buffers even where the applications fit current zoning.
What happens next is procedural but high-stakes. The planning commission will weigh the land-development plans and forward recommendations to the Board of Supervisors, which can impose conditions or negotiate voluntary mitigations, and the township's public agenda and meeting materials remain posted online at the Upper Merion Township. Residents say they will continue to press officials through public comment and legal channels as developers refine submissions and the debate over large AI-era data centers plays out across Montgomery County and the broader Philadelphia region.
