New York battery developers say Con Edison changes stalled $1.5 billion projects

NYC battery projects hit a roadblock

New York City is facing a fight over battery storage projects. Around $1.5 billion in planned projects are now caught in a dispute involving Con Edison. The conflict has put roughly 600 megawatts of third-party battery projects in limbo. That comes as summer heat can push the city’s power system to its limits.

Battery storage can help supply electricity when demand rises. Developers say the projects could support neighborhoods during stressful periods on the grid. Con Edison says its updated rules are needed to protect reliability. The dispute is now before New York state regulators.

About $1.5 billion is at stake

The dispute involves a large amount of planned investment in New York City. Battery developers say roughly $1.5 billion worth of projects could be affected. The projects are designed to store electricity and provide power when local demand increases. Many are neighborhood-scale systems rather than giant power plants.

The developers say Con Edison’s policy changes have made projects much more expensive. Some charges have reportedly increased to as much as 14 times earlier levels. That jump has made some planned projects difficult to move forward. State regulators are being asked to review the changes.

Developers challenge Con Ed’s new rules

Two industry groups brought the dispute to New York regulators in March. NY-BEST and NYSEIA say Con Edison’s rule changes have blocked about 600 megawatts of projects. They argue that the utility changed important interconnection requirements without following the proper process.

The dispute centers partly on changes made in August and November 2025. Developers say the new requirements increased costs and created uncertainty for projects. They argue that batteries are flexible resources that can respond to changing grid needs.

Con Ed says reliability comes first

Con Edison says battery storage has an important role in the clean energy transition. The utility also says batteries must be placed and operated carefully. Its concern is that too many batteries could charge at the same time. That could add stress to already constrained parts of the electric system.

The utility wants more control over battery charging and discharging schedules. Con Edison says that control could help match battery activity with local grid conditions. The goal is to reduce the chance of overloading parts of the system.

Heat waves raise the stakes

Extreme heat can create major challenges for electric grids. Air conditioners and other cooling equipment can drive electricity use sharply higher. During those periods, utilities may need additional resources to meet demand. Battery storage is one technology that can provide electricity during high-use periods.

The timing matters because New York City faces growing pressure to keep power available during hot weather. Batteries can store electricity and release it when demand rises. They can also respond differently depending on grid conditions.

Fun fact: New York City Comptroller Mark Levine reported in July 2026 that extreme heat had strained the city’s power grid, highlighting the need for more local energy resources.

Batteries could replace some peakers

Older fossil-fueled peaker plants are often used when electricity demand reaches very high levels. These plants can help meet short periods of heavy demand. Environmental advocates have pushed for cleaner alternatives in New York City. Battery storage is one option being considered for that role.

Batteries do not burn fuel while releasing stored electricity. That makes them different from traditional power plants used during demand spikes. Supporters say strategically placed batteries could reduce reliance on some peaker plants. The potential benefit is especially important in neighborhoods that have faced higher levels of air pollution.

The city needs 125 megawatts

Con Edison’s reliability contingency plan identified a need for 125 megawatts of clean, non-emitting capacity in New York City by 2033. The plan was filed with regulators in July. It identifies energy storage as one resource that could help meet that need.

The target gives added importance to the current dispute. Developers argue that storage needs to move forward if the city wants enough clean capacity. The utility is also looking at ways to manage battery operations more closely. Regulators now have to consider how those competing approaches fit together.

Developers question battery assumptions

Battery developers have challenged some of Con Edison’s planning assumptions. They argue that the utility’s models do not fully reflect how flexible batteries can be. Unlike traditional generators, batteries can change their charging and discharging schedules.

NineDot Energy raised concerns about assumptions involving battery charging patterns. The company said one model assumes batteries charge from midnight to 8 a.m. at a fixed rate. Developers argue that real battery operations can vary from day to day.

Fun fact: NYSEIA says current Con Edison rules can require many battery projects to follow a fixed overnight charging window rather than using more flexible charging schedules.

Regulators could decide the rules

The New York Public Service Commission has been asked to review the dispute. The petition argues that Con Edison changed its policies without using the proper regulatory process. The groups behind the petition want the commission to order the utility to restore earlier rules.

Regulators will also have to consider Con Edison’s reliability concerns. The utility wants rules that give it more influence over battery operations. Developers want access to interconnection terms they say are more workable. The commission’s decision could shape how battery projects develop across the city.

Officials are backing battery storage

Public officials and environmental groups have also entered the debate. A March letter urged state regulators to roll back Con Edison’s disputed changes. The letter included New York City Council member James Gennaro. He chairs the council’s Committee on Environmental Protection and Waterfronts.

Supporters say battery storage can provide several benefits for the city. They point to cleaner grid support and reduced dependence on peaker plants. They also say storage could help manage periods of heavy electricity demand. The groups want regulators to make sure the technology can continue developing.

Con Ed wants more battery control

Con Edison is seeking approval for a framework that would give it more control over battery operations. Under the proposed approach, the utility could influence when third-party batteries charge and discharge. Con Edison says this would allow battery activity to better match local grid conditions.

Developers have raised concerns about rules that could limit how batteries operate. Battery systems are valuable partly because they can respond to changing conditions. More restrictions could affect how projects are designed and financed.

The decision could shape NYC’s grid

The outcome could influence how quickly New York City adds battery storage. It could also affect investment decisions for projects that are still being planned. If projects remain delayed, some expected storage capacity may arrive later than developers intended.

The decision could also influence future grid planning in New York. Batteries may play a larger role as the state adds more clean energy resources. At the same time, utilities need systems that can operate safely and reliably. The current dispute highlights the challenge of balancing those goals.

Could changing grid rules create new challenges for battery projects nationwide? Find out how a recent grid order is adding uncertainty for America’s growing battery-storage industry.

Battery storage faces a key test

New York’s battery debate is now moving through the state regulatory process. Developers want earlier rules restored, while Con Edison is seeking more control over battery operations. Both sides say their approach is connected to the reliability of the electric grid.

The bigger issue goes beyond the projects currently on hold. New York City needs reliable electricity while also working to reduce pollution from older power sources. Battery storage could become an important part of that transition. For now, developers, officials and Con Edison are waiting for regulators to decide the next step.

Can new battery projects help keep up with rising electricity demand? Discover how a Houston project is preparing as ERCOT faces record power needs.

What are your thoughts on using more battery storage to handle rising power demand? Share your take in the comments and let us know what you think.

This slideshow was made with AI assistance and human editing.

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