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NCSL briefing to Vermont committee flags data‑center energy, water and PFAS challenges
Summary
A National Conference of State Legislators (NCSL) policy specialist told the Senate Natural Resources & Energy Committee that state legislatures are intensifying oversight of data‑center energy and water use (tariffs, reporting, demand‑management and microgrids); industry witnesses warned proposed PFAS/discharge language could create unattainable standards and unintended consequences.
Alex McWard, a senior policy specialist at the National Conference of State Legislators, briefed the committee on state legislative trends for data centers, emphasizing rising energy demand, growing attention to water use, and a patchwork of approaches that states have taken to allocate costs for large electrical loads.
McWard told the committee that data centers “currently account for a little more than 4% of energy consumption in the U.S.,” and cautioned that growth in cloud computing and artificial‑intelligence workloads could raise that share substantially. He described state responses ranging from creating distinct customer classes and tariffs for “large loads” to requiring reporting of energy and water consumption and introducing demand‑flexibility programs.
Industry representatives flagged specific draft language in H727 on PFAS and wastewater monitoring as potentially problematic. One industry speaker said the proposed subsection that prohibits “any addition” of PFAS could amount to a zero‑tolerance standard and create an unattainable obligation for facilities where incoming waters or incidental sources contain trace PFAS. The industry representative recommended removing or redrafting the absolute prohibition and instead tailoring monitoring and compliance approaches to established practices and inter‑state comparisons.
Committee members asked about microgrids, islanding, and storage. McWard said some state programs encourage microgrids and on‑site generation, and that storage expectations vary by statute; he also pointed to examples of states using mandatory demand‑management, long‑term contracts and interconnection cost allocation to protect ratepayers.
What happens next: Committee members noted a pending ANR report on PFAS testing due next January and signaled they would revisit H727 language, including whether monitoring or prohibitions should be adjusted in light of inter‑state practices and the forthcoming report.
