Seth Jaffe

The U.S. energy storage market has entered a new era. In the past year, record-breaking deployment of battery energy storage systems (“BESS”), sweeping federal legislation, new state permitting regimes, and breakthrough...more On May 18, 2026, EPA proposed two significant changes to the federal drinking water regulations for PFAS (per- and polyfluoroalkyl substances), commonly known as “forever chemicals.” One would rescind the Biden-era standards...more Earlier this month, the 9th Circuit Court of Appeals affirmed dismissal of plaintiffs’ claims in G.B. v. EPA, another of the children’s climate cases.  The claims in G.B. differed from those recently dismissed in Juliana v....more I’ve blogged numerous times about the role of EPA’s Science Advisory Board and, in particular, the Clean Air Science Advisory Committee, in providing validation for EPA’s technical decisions. Indeed, I’ve gone so far as to...more