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Troy board grants National Grid variance for 1,400-sq.-ft. energy center tied to geothermal pilot
Summary
The board approved an area variance for National Grid to build a roughly 1,400-square-foot energy center at 249 River Street to support a pilot geothermal thermal-energy network; the decision followed technical briefings and public comment.
The Troy Planning/Zoning board voted to grant National Grid an area variance to construct an approximately 1,400-square-foot energy center at 249 River Street that will support a pilot utility thermal energy network (U-TEN) using geothermal bore fields.
National Grid counsel Jessica Lees said the building will house pumps and equipment that circulate a closed fluid loop between geothermal bore fields and connected buildings’ water-source heat pumps. The city owns the parcel and intends to lease it to the Troy Local Development Corporation; National Grid would install and operate distribution piping. The board classified the building as a Type II action for environmental review and approved the requested variance by a 5-0 vote.
Why it matters: The project is part of New York State’s initiative to develop utility-scale thermal energy networks that can reduce emissions and energy costs. The Troy parcel will be one of several pilot projects the state is funding; local approval is needed for a building to house the mechanical equipment that runs the thermal loop.
Representatives from National Grid and their design team explained the technical function: a closed piping loop containing a heat-transfer fluid (described in testimony as a glycol-based solution) will connect the wells and the distribution pumping equipment sealed inside the energy center. The design team said the wells and piping will be installed underground in a nearby park lot and that the park surface would be restored after drilling. The proposed energy center was shown as a 30-foot-wide building with 0-foot setback on the north property line abutting an existing structure; National Grid argued the request is consistent with the zoning bulk table that limits side setbacks to 10 feet and that it is therefore legally impossible to comply with both that code section and the city’s 30-foot river-view corridor requirement.
Board members asked detailed technical questions about well locations, noise, safety, and containment. Designers said the pumps and noise-generating equipment would be inside the building and roof-mounted units would be fitted with sound attenuation and parapet screening; the wells themselves would be cased and installed to bedrock. A representative estimated roughly 200 boreholes and said drilling depths could be in the order of 600 feet; testimony indicated the fluid in the closed loop is a glycol-based antifreeze and that the system is contained with catchment/containment features in the building if a leak were to occur.
Public comment included an endorsement from John Elbaum, executive director of Troy Savings Bank Music Hall, which said it is supportive and hopes to tie into the network to reduce future energy costs.
Action details: The board found PLZBA20250031249 to be a Type II action for environmental review. The variance of Troy Zoning Code section 285-45(d)(2) (river-view corridor requirement) was granted (5-0). Board minutes record that the benefits of permitting the energy center outweigh potential detriments and that the city and applicant will continue to coordinate design and mitigation measures.
Next steps: Final permitting and lease details between the city, the Troy LDC, and National Grid will proceed; the applicant said drilling and pipe installation are part of the next work packages and the park surface will be restored after well installation.
