NY-BEST and NYSEIA say Con Edison rule changes have stalled about $1.5 billion in New York battery projects, affecting roughly 600 MW of third-party storage. In March, they petitioned state regulators to restore earlier rules; some interconnection charges rose up to 14-fold.
Con Edison says tighter requirements are needed to maintain reliability and prevent customers from absorbing higher costs if too many batteries charge at once. It is also seeking approval for a framework that would give it more control over when third-party batteries charge and discharge, to match local grid conditions.
Con Ed’s July reliability plan identified a need for 125 MW of clean, non-emitting capacity in New York City by 2033; NY-BEST said the plan named storage as a primary resource. Developers also dispute the utility’s modeling: NineDot Energy’s CTO said it assumes batteries charge at a fixed rate from midnight to 8 a.m., without day-to-day variation.
