Detour alert: Whitehall Street in Lynbrook.

Whitehall Street remains closed on Monday, October 19, 2020 except for local deliveries. Please see "News" for more details.

A brief message on COVID-19

PSEG Long Island is deeply committed to the health, safety and wellbeing of our customers, employees and our communities. We ask that customers remain in their homes while crews are working nearby. If customers must speak with our crews, we ask that they practice responsible "physical distancing" and remain at least 6 feet away to ensure the health of everyone involved. The contractor for this project has provided PSEG Long Island with its safety plan, which meets current regulatory requirements with respect to COVID-19, including physical distancing measures.

We are leveraging the guidance of the CDC and state and local authorities in the areas we operate. At PSEG Long Island, we know that our customers rely on us to power their lives and businesses. We are doing our part in fulfilling this commitment.

Construction update for October 19, 2020.

Cable pulling, trenching and splicing under way throughout the project area. See "News" for Monday, October 19, 2020.

PSEG Long Island WNTP Phase 2 EM&CP approval by NYSPSC

See the "News" and "Document Library" sections of the website regarding the approval by the New York State Public Service Commission of Phase 2 of the EM&CP for the WNTP.

Project receives EM&CP approval

The New York State Public Service Commission has granted an "Environmental Management and Construction Plan" approval for the Western Nassau Transmission Project. Please see the Document Library for more information.

NY State Electric Transmission Certification

PSEG Long Island received a "Certificate of Environmental Compatibility and Public Need" on Thursday, Sept. 19, 2019 from the New York State Public Service Commission.

News & Events

  • 2020
  • 2019
  • 2018
  • 2017

ALERT: Whitehall Street in Lynbrook road closure.

October 19, 2020.

Weekday daytime road closure of Whitehall Street in Lynbrook to continue.

Location of Work: Whitehall Street in Lynbrook between Merrick Road and Franklin Avenue (North Lynbrook).

Description of Work: Trenching for conduit installation.

Timeframe of Work: Monday through Friday, 7 a.m. to 7 p.m.

Details of Work: On Monday, October 19, 2020, trenching work continues on Whitehall Street in Lynbrook between Merrick Road and Franklin Avenue in North Lynbrook. Crews will excavate the utility trench along the berms of the concrete panels, place the new electric conduits into the trench, and use cementitious backfill to restore the roadway. During the work, parking on Whitehall Street will be prohibited. Residents will be permitted to use side streets for overnight parking between October 12, 2020 and October 26, 2020. 

Those living on Whitehall Street will have local traffic access.

Questions: For Questions: Contact us by hotline (516-780-0665); website (www.westernnassautransmission.com); email (info@westernnassautransmission.com).


Construction update for the Village of Garden City for Monday, October 19, 2020.

October 19, 2020.

The following is the construction update for the Village of Garden City. The following work schedule is for the weeks of Monday, October 19, 2020 and Monday, October 26, 2020.

Location of Work: Ninth Street, Hilton Avenue, Stewart Avenue.

Description of Work: Cable splicing, cable pulling, and restoration.

Timeframe of Work: Continuous work hours and daytime work hours.

Details of Work:  On Monday, October 19, 2020, crews will be working at two locations performing splicing activities. Splicing is a continuous operation where crews, using a climate-controlled work trailer, work above and below ground at the splice vault manhole, splicing the new electric transmission cables together. The work is relatively unobtrusive. Single lane closures should be expected during the activities at the splice vault and work trailer location only. Work locations include: Monday, October 19, 2020, Splice Vault No. 21, located on the grassy median of Stewart Avenue at Butler Place and Splice Vault No. 20, located on the Village Green at Village Hall of Stewart Avenue. Beginning on Friday, October 30, 2020, crews will be pulling cable from Splice Vault No. 22, located on Stewart Avenue east of Clinton Road in the eastbound lanes near the former Chase Bank, to Splice Vault No. 23, located at the entrance to the Hurricane Wings restaurant at the Stewart Plaza. Crews, using large spools of electric transmission cable, will pull the cable through the splice vaults and the underground conduits to connect the splice vaults. The work is planned for daytime hours. Single lane closures at the vaults should be expected. Finally, beginning Wednesday, October 21, 2020, crews will be repairing and restoring sidewalks and landscapes along Stewart Avenue and Cherry Valley Avenue. The work is planned for daytime hours.

Travel impacts: Single lane closures should be expected during splicing and cable pulling. Travelers should seek alternative routes. Questions: Contact us by hotline (516-780-0665); website (www.westernnassautransmission.com); email (info@westernnassautransmission.com).


Construction update for Uniondale for Monday, October 19, 2020.

October 19, 2020.

The following is the construction update for Hempstead, the area of Uniondale. The following work schedule is for the weeks of Monday, October 19, 2020 and Monday, October 26, 2020.

Location of Work: Stewart Avenue in the eastbound lanes from the Village of Garden City border, and inside the Stewart Plaza parking lot.

Description of Work: Trenching operations, cable pulling.

Timeframe of Work: Nighttime work hours, daytime work hours.

Details of Work: On Monday, October 19, 2020, crews are anticipated to resume trenching on Stewart Avenue in the eastbound lanes east of the Village of Garden City line to Splice Vault No. 23, located in the Stewart Plaza parking lot adjacent the substation and Hurricane Wings/Goldfish Swim School. The work is planned for nighttime hours. Crews will excavate the pavement, place the new electric conduits, and use cementitious backfill to restore the roadway. Travelers are advised of single lane closures and possible temporary detours during these activities. On Friday, October 30, 2020, it is anticipated that crews will begin cable pulling from Splice Vault No. 22, located on Stewart Avenue east of Clinton Road in the eastbound lane in Garden City, to Splice Vault No. 23, located on Stewart Avenue in the eastbound lane near Hurricane Wings. The work is planned for daytime hours. Crews, using heavy equipment and large spools of electric transmission cable, will pull the cables through the splice vaults and underground transmission conduits to connect the splice vaults. Single lane closures should be expected with these activities.

Travel impacts: Single lane closures for trenching and cable pulling are expected. Travelers should seek alternative routes. Please see this website for more details when they arise. Questions: Contact us by hotline (516-780-0665); website (www.westernnassautransmission.com); email (info@westernnassautransmission.com).


Construction update for West Hempstead for Monday, October 19, 2020.

October 19, 2020.

The following is the construction update for the Town of Hempstead, the area of West Hempstead, for the weeks of Monday, October 19, 2020 and Monday, October 26, 2020.

Location of Work: Hempstead Avenue.

Description of Work: Horizontal directional drilling, paving.

Timeframe of Work: Daytime work hours will possible continuous operations.

Details of Work:  On Monday, October 19, 2020, crews will be on Hempstead Avenue performing a horizontal directional drill under the Pine Stream Bridge at Hall’s Pond Park. The drill will stretch from the Hall’s Pond Park roller skating rink, to the St. Thomas the Apostle Chapel (Eagle Avenue to Nassau Boulevard). Crews will use equipment to drill under the bridge while allowing traffic passage on Hempstead Avenue. Single lane closures and new traffic patterns should be expected. The work is planned for daytime hours, but some continuous operations should be expected. On Thursday, October 22, 2020, crews will be milling and paving Hempstead Avenue between Chestnut Street and Westminster Road. The work is planned for nighttime hours.

Travel impacts: Single lane closures and traffic control measures should be expected during drilling activities and paving. Travelers should seek alternative routes. Please see this website for more details. Questions: Contact us by hotline (516-780-0665); website (www.westernnassautransmission.com); email (info@westernnassautransmission.com).


Construction update for the Village of Lynbrook for Monday, October 19, 2020.

October 19, 2020.

The following is the construction update for the Village of Lynbrook. The following work schedule is for the weeks of Monday, October 19, 2020 and Monday, October 26, 2020.

Location of Work: Whitehall Street.

Description of Work: Trenching operations, paving, cable pulling and cable splicing.

Timeframe of Work: Daytime work hours.

Details of Work: On Monday, October 19, 2020, trenching continues on Whitehall Street between the substation located at the intersection of Hendrickson Avenue and Whitehall Street, and Whittier Street. The work is planned for daytime hours. Crews will excavate the pavement, place new electric conduits, and use cementitious backfill to restore the roadway. For the next two weeks, Whitehall Street will be closed to all traffic except local deliveries and emergency services. Residents are encouraged to park on side streets (one-sided overnight parking is permitted by the Lynbrook Police Department) to assist with access. On Monday, October 19, 2020, crews will be milling and paving the completed portions of Whitehall Street northward toward Franklin Avenue. The work is planned for daytime hours. On Monday, October 26, 2020, crews will begin cable pulling from Splice Vault No. 2, located on Whitehall Street at Stuart Street, to Splice Vault No. 1, located on Whitehall Street near Whittier Street. Crews, using heavy equipment and large spools of electric transmission cable, will pull the cables through the splice vaults and underground transmission conduits to connect the splice vaults. The work is planned for daytime hours. Single lane closures are to be expected during these activities. On Wednesday, October 28, 2020, crews will pull from Splice Vault No. 1, to the substation located at the corner of Whitehall Street and Hendrickson Avenue. The work will be similar as described above. On Friday, October 30, 2020, splicing crews will begin work at Splice Vaults No. 2 & 1. Splicing work entails crews working above and below ground at the splice vaults and within climate-controlled work trailers. The work is continuous for six days, but is unobtrusive. Single lane closures will occur at the splice vaults.

Travel impacts: Full road closures on Whitehall Street are in place. Detours are via the side streets and Hendrickson Avenue between Merrick Road and Franklin Avenue. One-sided parking restrictions in place between Kensington Road and Hendrickson Avenue. Travelers should seek alternative routes. Please see this website for more details. Questions: Contact us by hotline (516-780-0665); website (www.westernnassautransmission.com); email (info@westernnassautransmission.com).


Construction update for the Village of Malverne for Monday, October 19, 2020.

October 19, 2020.

The following is the construction update for the Village of Malverne. The following work schedule is for the weeks of Monday, October 19, 2020 and Monday, October 26, 2020.

Location of Work:  Broadway and Franklin Avenue.

Description of Work: Paving, cable splicing.

Timeframe of Work: Daytime work hours, continuous work hours.

Details of Work:  Throughout the next two weeks, crews will be performing splicing at various locations within the Village at splice vaults. Generally, splicing is a continuous operation where crews, using a climate-controlled work trailer, work above and below ground at the splice vault manhole, splicing the new electric transmission cables together. The work is relatively unobtrusive. Single lane closures should be expected during the activities at the splice vault and work trailer location only. Work locations include: Friday, October 23, 2020 Splice Vault No. 3, located on Franklin Avenue at Rider Avenue and Splice Vault No. 4, located on Broadway at Alnwick Road. Finally, on Monday, October 19, 2020, crews will be milling and paving Franklin Avenue and Broadway for final pavement restoration. The work is planned for daytime hours.

Travel impacts:  Single lane closures are expected with cable splicing and paving. Travelers should seek alternative routes. Questions: Contact us by hotline (516-780-0665); website (www.westernnassautransmission.com); email (info@westernnassautransmission.com).


PSEG Long Island receives approval for Phase 2 of the EM&CP for the WNTP.

April 1, 2020
Effective March 20, 2020, the New York State Public Service Commission has approved the "Phase 2" of the PSEG Long Island Western Nassau Transmission Project "Environmental Management and Construction Plan." This phase of the "EM&CP" focuses primarily on work in the area of Stewart Avenue and Clinton Road in the Village of Garden City. On Wednesday, April 1, 2020, the Notice to Proceed for construction of Phase 2 was approved. For more information on this approval, please see the "Document Library" below.


PSEG Long Island announces construction start of the Western Nassau Transmission Project.

Nov. 22, 2019
PSEG Long Island announces the proposed construction start date for the Western Nassau Transmission Project.

Learn More


NYSPSC approves Environmental Management & Construction Plan

Nov. 19, 2019
On Tuesday, Nov. 19, 2019, PSEG Long Island received the approval from the New York State Public Service Commission for its "Environmental Management & Construction Plan" or "EM&CP," which provides for the processes and practices to build the Project. Please check the website in the coming days for updates on pending construction activities associated with the Project. For more information on the approval, see the Document Library in the website's Permitting section.


NY State Electric Transmission Certification

September 19, 2019
PSEG Long Island received a "Certificate of Environmental Compatibility and Public Need" on Thursday, Sept. 19, 2019 from the New York State Public Service Commission. Please click here to see the Certificate.

Learn More


Project Mailing

March 26, 2018
We have recently mailed a letter and fact sheet to the abutting neighbors to our identified routes. If you have questions, please contact us directly.


Municipal Outreach Begins

December 1, 2017
Representatives of PSEG Long Island and WNTP team will be reaching out to the municipal officials in the Project area.


NY State Article VII Process

December 1, 2017
Have questions about the New York State Article VII process?

Learn More


Open Houses Planned

March 1, 2017
Check back for scheduling of future open houses in your community.


About the Project

Project Mission Statement:

The reliability upgrades PSEG Long Island is planning to construct are necessary to keep pace with the growing demand for electricity. PSEG Long Island has proposed a new, 138 kilovolt (138 kV) underground transmission line (The Western Nassau Transmission Project or WNTP) between two area substations to address an important need within the electric grid. The new line will make the system more resilient and will improve redundancy, which is vital to the long-term reliability of the energy grid. The line must be installed by 2020 for PSEG Long Island to continue to maintain a safe, robust, and reliable system, and remain in compliance with mandatory federal regulations.

Benefits of Improved Reliability

1 Second Circuit

The new 138kV underground transmission line adds a second circuit to serve the substations, providing redundancy in the case of an electric system impact. This improves the reliability of the electric grid for residents and businesses of western Nassau County.

2 Will Serve the Public for Years

While much of New York’s transmission infrastructure is aging, the new facilities proposed will serve the public for years to come.

3 Over Public Land

Unlike many new electric transmission lines that are built mostly over private property, most of this project will be located in roads and other public rights-of-way.

4 Public Participation

Public participation in the Article VII process is welcome and key to the success of PSEG Long Island and this Project.

About the Permitting Process

To construct the Project, PSEG Long Island will need, in addition to other necessary permits,
  • Two approvals from the New York State Public Service Commission under Article VII of the Public Service Law, the Certificate of Environmental Compatibility and Public Need, and Approval of an Environmental Management & Construction Plan (EM&CP)
  • Federal approval from the U.S. Army Corps of Engineers
  • New York State approval from or consultation with the New York Department of Environmental Conservation, New York State Office of Parks, Recreation & Historic Preservation and the New York State Department of Transportation
  • Local approval from the Long Island Rail Road
  • Consultation with Nassau County and the municipalities along the route

Document Library

Construction Process

Underground construction involves five key phases.

1. Splice Vault Install:

Underground vaults will be installed at intervals along the route to splice together underground cable.

2. Duct Bank Install:

Crews will ready roadways and install an underground duct bank in which the new cable will be installed.

3. Restoration:

Following the completion of splice vault and duct bank installation, excavated areas will be restored.

4. Cable Installation:

Underground cable comes on trucks specifically designed for the installation of underground cable. Crews will pull cable from one splice vault to another along the Project route.

5. Cable Splicing:

Crews will set up a climate controlled environment at each splice vault location to splice the underground cables together. This activity is continuous for approximately one week for each splice vault.

Frequently Asked Questions

  • What is the Article VII Process?
  • Is the public allowed to participate in this process?
  • What are the benefits of the Project?
  • Will you need to purchase new property to build this transmission line?
  • Can LIPA/PSEG Long Island use eminent domain?
  • What are EMF? Are they unsafe?
  • How does the Company account for environmental impacts caused by the Project?
  • What will be the traffic impacts of the Project?

Article VII of the New York State Public Service Law, "Siting of Major Utility Transmission Facilities,” requires a full environmental, public health and safety impact review of the siting, design, construction, and operation of major transmission facilities in New York State. Any proposed electric transmission line with a design capacity of 100,000 volts (100kV) or more extending for at least 10 miles, or of 125kV or more extending a distance of at least one mile, must submit an application to the New York State Public Service Commission (Commission) for a Certificate of Environmental Compatibility and Public Need.

Article VII prescribes the content of an application, including a description of the project’s location, alternative locations, expected economic effects and environmental studies. The Commission makes the final decision regarding all Article VII applications after careful review and with public input. For a complete description of the application review process, please refer to the Commission’s Article VII Review Process Guide at: Article VII Guide Web 9-14-16 Final.pdf (dps.ny.gov website)

Yes, once the Western Nassau Transmission Project (WNTP) Article VII application is filed, there will be several opportunities for individuals to participate in the Article VII review process, and PSEG Long Island encourages our neighbors to contact us with their questions and concerns. The need for and the proposed location (and alternative locations) for this 138kV underground transmission line, as well as its cost, environmental impact, and construction and maintenance practices, are all subject to review. To maintain and promote an open and transparent permitting process, the WNTP Public Outreach Team ensures that affected landowners and the public receive important project information, and the ability to ask questions and voice concerns.  We can be contacted:

The WNTP Team will inform the public by mail or newspaper publication about key project milestones. Nearby landowners will receive correspondence from the Team during the permitting process. Prior to the start of construction, these landowners will receive written notification, and as the stages of construction unfold, landowners will receive periodic updates.

Members of the public can also provide comments to the New York State Public Service Commission (Commission) at any time during the Article VII process.  This can be done by sending a written statement (electronically or via mail) to the Secretary to the Commission, filling out a "Comment Form” on the Commission’s website, or calling the Commission’s Opinion Line (1-800-335-2120).  This line is set up to take comments about pending cases from in-State callers, 24 hours a day. These comments are not transcribed verbatim, but a summary is provided to the Commission.  Additionally, the public is encouraged to attend Public Statement Hearings, which are conducted by the Commission in the project vicinity to receive statements of position or concern from residents affected by the project proposal.  These statements from the public are entered into the official record upon which the Commission will ultimately base its decision.

  • The new 138kV underground transmission line adds a second circuit between the East Garden City and Valley Stream substations, providing redundancy in the case of an electric system impact. This improves the reliability of the electric grid for residents and businesses of western Nassau County.
  • While much of New York’s transmission infrastructure is aging, the proposed new facilities will serve the public for years to come.
  • The underground transmission line provides storm and weather hardening and resiliency (i.e. underground versus the more weather-susceptible overhead lines).
  • Unlike many new electric transmission lines that are built mostly over private property, most of this project will be located in roads and other public rights-of-way.
  • Public participation in the Article VII process is welcome and key to the success of PSEG Long Island and this important Project.

During the siting and routing process, PSEG Long Island and its contractors have worked to lessen the overall need for new property to build the proposed transmission line by using public rights-of-way to the greatest extent possible. Since an overhead transmission alternative was not viable to interconnect the two substations in question, an underground solution has been proposed.

The proposed route is subject to approval of the New York State Public Service Commission, and the final scope of property rights to be acquired for this Project will not be determined until late in the permitting process. Currently, our assessment is that this scope of property rights will be quite narrow: one parcel acquisition could possibly be done to provide a corridor on which the new underground line would enter the East Garden City Substation; and a small number of easements adjacent to roads along the route might be necessary, although even most of these would be temporary easements in effect only for the construction period.

If you have any questions or concerns about the acquisition process, please contact us via our hotline or website email (info@WesternNassauTransmission.com).

As a public authority, The Long Island Power Authority, and PSEG Long Island as its operating entity, have the right to exercise eminent domain for projects such as this Project. Eminent domain cannot be exercised until the Project is officially certified with a Certificate of Environmental Compatibility and Public Need, and the Environmental Management and Construction Plan is approved by the New York State Public Service Commission.

However, LIPA and PSEG Long Island strive to resolve all real estate acquisition concerns in an amicable and mutually agreeable fashion when at all practical.

Electric and magnetic fields can be generated from a wide variety of sources, including transmission lines. We recognize that there is scientific uncertainty as to whether EMF have an effect on health or not, but we design our lines to adhere to New York State guidelines.

The World Health Organization (or WHO) provides detail and study regarding the relationship between humans and EMF. The WHO is an independent non-governmental organization which has collected data from hundreds of studies regarding EMF, and has compiled its data on its website:www.who.int.

The electric field from the WNTP will be blocked by the cable shielding and will not be present aboveground. We conducted a model analysis of the anticipated aboveground magnetic field (MF) levels from the WNTP during normal operation of the line. The results of the study demonstrate that the anticipated MF levels of the WNTP would be well below the maximum levels allowed by New York State Public Service Commission guidelines.

Two of the primary advantages of an underground transmission system are the environmental benefits of (a) the ability to construct the system through or into areas where right-of-way is not available and (b) the reduced visibility of an underground system.

Exhibit 4 of the Article VII application will detail the consideration we gave to the impacts and tentative proposed mitigation for potential environmental impacts, including: cultural resources; rare, threatened and endangered species; sensitive habitats including wetlands, contaminated or unique soils and water resources; and EMF.

Detailed design will incorporate environmental impact mitigation, which will be contained within the Project’s Environmental Management and Construction Plan (EM&CP).

Traffic studies will be conducted to determine the potential impacts to the vehicular flow within the Project area. Traffic impacts will be minimized as much as possible to not disturb commuter flow, or the needs of emergency services. The WNTP team will work with Nassau County and the various municipalities to identify potential detour routes where applicable.

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