Roughly $1.5 billion in community-scale battery storage investment sits frozen after Con Edison imposed new interconnection rules in August 2025 that developers say raised their grid-connection costs by as much as fourteenfold.

The New York utility restructured the terms under which nearly 600 MW of third-party battery projects were seeking to plug into its network, then formalized the policy in November. NY-BEST and NYSEIA answered with a March petition to the New York Public Service Commission asking regulators to force Con Ed back to its prior rules.

The freeze has direct implications for the energy backbone that recycling and materials-recovery operations depend on — from peak-shaving assets that defer new peaker construction to backup capacity for shredders, sort lines and foundry equipment.

What does the August 2025 rule change actually do?

The November tariff took a structure developers had been working under and "dramatically raised the costs they would have to pay to interconnect, by as much as fourteenfold in some cases," according to the NY-BEST/NYSEIA petition.

For NineDot Energy, a New York community battery developer with six sites operating and more than two dozen in development, the shift broke the math on projects already in the pipeline. Con Ed's analysis, chief technology officer Adam Cohen said, "assumes batteries will charge in an inflexible manner, from midnight to 8 a.m., with no day-by-day variation, and at a fixed charging rate."

An April study commissioned by NineDot from Danovo Energy Solutions found that active technical management by Con Ed's grid operators could nearly double hosting capacity. A separate May study from NYSEIA, NY-BEST and the Electric Power Research Institute reached a similar conclusion.

Why does Con Ed say it acted?

Con Ed vice president Raghu Sudhakara tied the rule change to a surge in applications. Interconnection requests for battery projects of 5 MW or less have roughly tripled over two years and now total nearly 2.5 GW.

"We think storage is important for the clean energy transition," Sudhakara said. "But it has to be sited in the right location, it has to come online at the right time, and it has to operate under the right operating conditions."

Con Ed warns uncontrolled third-party charging could pull more power than certain feeders can carry, and that current state rules deny it direct dispatch authority over those assets. The utility wants regulators to approve a Reliability Asset Dispatch Rights (RADR) framework that would largely replace VDER compensation, with Con Ed entering long-term contracts to reimburse developers for grid energy and upgrade costs — and earning a regulated rate of return on those expenses.

What is at stake for the broader energy buildout?

Con Ed's July reliability contingency plan flagged a need for 125 MW of "clean and non-emitting" capacity in New York City by 2033, naming energy storage as a primary resource, NY-BEST senior director Claudia Villar-Leeman said.

Environmental justice advocates are pressing for storage to displace peaker plants in low-income neighborhoods. Council member James Gennaro, who chairs the City Council's Committee on Environmental Protection and Waterfronts, has asked the PSC to intervene. "It's just unacceptable for a regulated utility to operate like this," he said. "We want battery storage to progress. This is good for the grid, it's good to reduce our dependence on peaker plants, it's good for everyone."

What happens next?

NYSEIA executive director Noah Ginsburg framed the technical disagreement as the core issue. "We have utility planners taking our most flexible resource and treating them as if they're completely inflexible," he said. "If your starting point is false assumptions about the flexibility of the resource you are dealing with, you're not going to get a positive outcome."

Ginsburg said developers stand ready to work with Con Ed on revising the VDER tariff to better align storage dispatch with grid needs. The PSC has already asked utilities to submit tariff language — a request Con Ed and other New York utilities have declined.

Con Ed, in a joint filing with the commission, countered that the VDER revisions sought by developers could cost customers more than traditional grid upgrades. The PSC's ruling on the March petition, and on Con Ed's RADR alternative, will set the operating rules for roughly $1.5 billion in stalled projects and shape how the state meets its 6 GW energy-storage target by 2030.