Complete civil packages for battery energy storage in Suffolk County, New York: pad subgrade and mass grading, foundation excavation, access and crane pads, collection trenching, ductbank, SWPPP, and substation civil.
Backwell is a civil site work general contractor serving battery energy storage developers and EPCs building in Suffolk County, New York. We contract the complete civil package under one agreement, with Backwell superintendents and lead operators on site.
Suffolk carries the largest block of announced storage on Long Island. The Long Island Power Authority approved two utility scale contracts on December 18, 2024: Key Capture Energy's KCE NY 29 in Hauppauge at 79 MW and 316 MWh, connecting to the Kings Substation, and KCE NY 31 at Shoreham at 50 MW and 200 MWh, sited on part of the former Shoreham Nuclear Power Plant property that LIPA owns. Brookhaven hosts the 79.9 MW and 160 MWh Holtsville Brookhaven Battery Storage project, which interconnects to the LIPA and PSEG Long Island line 69-849 running from West Yaphank to North Bellport, with commercial operation targeted for the fourth quarter of 2027. Yaphank carries two further proposals, an 80 MW facility on Station Road and a 50.4 MW facility on an existing power plant parcel north of Zorn Boulevard. Riverhead is processing a 60 MW and 120 MWh special permit at Calverton. For a civil contractor the work on these sites is earthwork first: clearing, mass grading, engineered enclosure pads, cable trenching, aggregate access roads and stormwater practices sized for outwash sand.
Publicly reported battery energy storage in and around Suffolk County:
Project details come from public filings and reporting and are listed to show where the work is. Backwell is not affiliated with these projects or their developers.
Suffolk sits on the Atlantic Coastal Plain. The Ronkonkoma and Harbor Hill terminal moraines run the length of the county, and broad glacial outwash plains slope south from them toward the Great South Bay. Soils mapped in the Suffolk County survey are dominated by Riverhead sandy loam, Haven loam, Plymouth loamy sand, and Carver and Plymouth sands, with Bridgehampton silt loam on the South Fork and Berryland and Atsion soils in kettles and wet swales. These are deep, well drained to excessively drained sands and gravels with rapid permeability, low fines and little cohesion. Haven soils carry roughly 18 to 36 inches of water sorted loamy material over stratified sand and gravel; Plymouth soils run to sand and gravel at great depth. Crystalline bedrock lies far below the surface and is not an excavation factor. The controlling water condition is the upper glacial aquifer, shallow near the south shore and in kettle bottoms and deep beneath the moraine crests. Frost design depth is commonly taken at 36 inches.
Sand and gravel subgrades take an engineered pad well but give trouble during construction. Enclosure pads and transformer foundations need proof rolled subgrade, geotextile separation and a graded aggregate base, because clean outwash sand ruts under crane outriggers and container deliveries. Trenching is fast in these soils, but sidewalls slough, so trench boxes or laid back banks are the practical answer rather than vertical cuts. Access roads want a compacted aggregate section thick enough for transformer and container haul. Stormwater design on Long Island leans on infiltration basins and drywells because permeability is high, and the binding constraint is vertical separation to seasonal high groundwater rather than runoff volume. On low sites near the south shore and in kettle bottoms, plan for dewatering at footing and duct bank elevations. Wind and rain move bare sand quickly, so SWPPP measures have to be staged tightly against clearing.
Concrete is placed by our subcontractor partners under the same contract, so the foundations follow the earthwork without a separate award. We price the civil package as one scope under one contract, which gives the EPC a single point of responsibility for the civil critical path instead of managing separate clearing, earthwork, and underground subcontracts.
Battery storage in New York is governed by Section 1207 of the 2025 Fire Code of New York State, which the State Fire Prevention and Building Code Council adopted on July 25, 2025 with an effective date of December 31, 2025. Section 1207 carries material based on the 2023 edition of NFPA 855 and renumbers what the 2020 code placed at Section 1206. Systems must be listed to UL 9540. Large scale fire testing under UL 9540A, reported to and approved by the fire code official, is what permits reduced separation distances and quantities above the table limits, and a hazard mitigation analysis is required to exceed the maximum allowable quantity. Outdoor installations carry a ten foot clearance to lot lines, public ways, buildings, stored combustibles, and other exposure hazards, with ten feet of combustible vegetation cleared on each side. New York added a mandatory peer review at Section 1207.12 for systems above the Table 1207.5 quantities, covering the site plan, the emergency operations plan, and the UL 9540A report. Those provisions fix pad layout and access road geometry before any earthwork is priced.
Battery storage siting in New York runs on the Fire Code of New York State, which adopts the International Fire Code provisions for stationary energy storage, together with NFPA 855 and the UL 9540A test reporting the authority having jurisdiction will ask for. The civil consequences are set early and they are ours to build.
We build to the approved civil drawings and the fire code commentary that comes with the permit. We do not stamp the design.
Local law. The Islip Town Board voted unanimously on September 16, 2025 to extend its battery storage moratorium by one year to September 30, 2026, which halted the Hauppauge project on Rabro Drive. Southold has extended its moratorium to April 2027, and Babylon, Huntington, Smithtown and Southampton also carry restrictions on utility scale systems as of September 2026. Southampton adopted a new battery storage code at its June 10, 2025 town board meeting, and Brookhaven and Riverhead are accepting applications.
Backwell superintendents, project managers, and lead operators run every site. We mobilize company equipment for the core scope and scale each project with leased production fleets, qualified regional subcontractors, and agency-placed field staff, all under Backwell supervision and a single contract.
Contractor licensing. New York does not issue a statewide general contractor license for commercial construction. Licensing is handled locally, so individual cities, towns, and counties may require contractor registration or a local license, and a few trades are licensed at the state level, including asbestos handling and crane operation. Separately, contractors and subcontractors performing public work, and work covered by Article 8 of the Labor Law, must be registered with the New York State Department of Labor under its statewide contractor registry, which took effect December 30, 2024. Owners, EPCs, and integrators on battery storage projects will typically ask for that DOL registration number along with insurance and, where required, bonding.
Construction stormwater. SPDES General Permit for Stormwater Discharges from Construction Activity, permit number GP-0-25-001, issued by the New York State Department of Environmental Conservation. It took effect January 29, 2025, replacing GP-0-20-001, and runs through January 28, 2030. Coverage is triggered at one acre of soil disturbance, or less if part of a larger common plan, and requires a Notice of Intent plus a SWPPP prepared and implemented under the DEC design manual. Coverage under the prior permit did not carry over automatically, so active sites had to refile. Backwell carries the SWPPP scope, installs and maintains the controls, keeps the inspection log, and closes the permit out with final stabilization.
Prevailing wage. Standalone battery storage sits outside New York Labor Law Section 224-d. That section applies to a covered renewable energy system as defined in Public Service Law Section 66-p, and that definition lists generating technologies only, so energy storage is not included and Section 224-d contains no storage clause. Prevailing wage still reaches many storage projects by other routes. Labor Law Section 224-a expressly excludes an energy storage system with a capacity equal to or under five megawatts alternating current, which means a larger storage system on a privately contracted project that meets the public funds and cost tests can be covered. The Public Service Commission order of June 20, 2024 establishing the updated energy storage goal states that projects of one megawatt alternating current and larger will be subject to prevailing wage requirements, so incentivized projects carry it as a program condition rather than by statute. Storage co-located with a covered renewable generator follows that generator. Separately, contractors and subcontractors performing public work, and work covered by Article 8 of the Labor Law, must be registered with the New York State Department of Labor under the statewide contractor registry effective December 30, 2024. The applicable trigger should be confirmed project by project. Backwell produces certified payroll, pays the applicable wage determination, and supports apprenticeship labor-hour compliance.
All New York battery storage civil work or the New York solar civil cluster.
Send plans, a scope of work, and the schedule through the form below or call (315) 400-2654. We review the civil package, walk the site if it is at that stage, and return a scoped proposal with a schedule of values, stated fill allowances, and unit rates for overages. A one-page capability statement is available for prequalification files.
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