When and where is the public hearing for the Falmouth Tap Station replacement?

The public comment hearing is Thursday, May 14, 2026 at 6:00 p.m. in Lawrence School Auditorium, 113 Lakeview Avenue, Falmouth, MA, with remote Zoom participation.

How do I sign up to speak at the May 14 hearing?

Email SitingBoard.Filing@mass.gov with subject 'EFSB 25-11 SPEAKER SIGN UP' by May 13, 2026, or leave voicemail at (617) 305-3544.

What is the deadline to submit written comments or petition to intervene?

Written comments and petitions to intervene or be a limited participant must be filed by Friday, May 29, 2026.

Where can I review the Company's petition and project materials?

Materials are online at the Siting Board project page and Eversource project page, and hard copies at listed Boston and Falmouth public locations.

May 7, 2026 Public Hearing: 228 Sam Turner Road, Falmouth, MA

COMMONWEALTH OFMASSACHUSETTSENERGY FACILITIES SITING BOARD NOTICE OF ADJUDICATIONAND PUBLIC COMMENT HEARING EFSB 25-11 NSTAR Electric Company d/b/a Eversource Energy(Falmouth Tap Station Zoning Exemption) NSTAR Electric Company d/b/a Eversource Energy ("Eversource" or the "Company") has requested that the Energy Facilities Siting Board ("Siting Board") grant individual and comprehensive zoning exemptions from the Town of Falmouth's Zoning Bylaw, ("Zoning Petition") to replace the existing Falmouth Tap Switching Station ("Switching Station") located at 228 and 280 Sam Turner Road in Falmouth, Massachusetts with a new transmission and distribution substation ("Substation" or the "Project"). A Project description are provided below. The Siting Board will conduct a public comment hearing with both in-person and remoteparticipation options on Thursday, May 14, 2026, at 6:00 p.m.In-person hearing location:Lawrence School Auditorium113 Lakeview AvenueFalmouth, MA 02540 Remote attendees: join by using this link: https://us06web.zoom.us/j/86882840994. For audio-only participation, attendees can dial in at (646) 558-8656 (not a toll-free number)] and then enter the Webinar ID: 868-8284-0994 ## (press # twice) To provide oral comments during the public comment hearing (in person or on Zoom), please send an email to SitingBoard.Filing@mass.gov with the subject line "EFSB 25-11 SPEAKER SIGN UP", and your name, email address, and mailing address in the body of your email by Wednesday, May 13, 2026. To sign up by telephone, please leave a voicemail referencing "EFSB 25-11" at (617) 305-3544 with your name, telephone number, and mailing address by May 13, 2026. Pre-registered commenters will speak first, and others will speak afterwards. The Siting Board also invites written comments on the Project. Written comments will be most useful to the Siting Board if submitted by Friday, May 29, 2026. Persons or groups who wish to be involved in the Siting Board proceeding (beyond providing comments at the public comment hearing or in writing) may seek to intervene as a party or to participate as a limited participant. Any petition to intervene or participate must likewise be filed no later than Friday, May 29, 2026, and must follow the instructions below. Important Dates: Public Comment Hearing: Thursday, May 14, 2026 Deadline to file written comments: Friday, May 29, 2026 Deadline to file for intervention/limited participant status: Friday, May 29, 2026 Public Comment Hearing At the public comment hearing, the Company will present an overview of the Project. Public officials and members of the public will have an opportunity to ask questions and comment on the Project. The public comment hearing will be transcribed by a court reporter. A recording of the public comment hearing will be posted to the Siting Board's YouTube channel after the hearing, at https://www.youtube.com/@EFSBHearings_MA. Public Review of the Company's Petition A description of the Project, links to the Company's petition, attachments, analysis, and periodic updates are available via the Siting Board's webpage: https://www.mass.gov/infodetails/falmouth-tap-station-replacement-project. In addition, the Company maintains a webpage for the Project: https://www.eversource.com/residential/about/transmissiondistribution/projects/massachusetts-projects/esmp-projects/falmouth-tap-upgrade. Hard copies of the Company's petitions, including all attachments, are available for public inspection at the following locations: Boston: Energy Facilities Siting Board One South Station, 3rd floor Boston, MA 02110 Falmouth: Town Clerk's Office 59 Town Hall Square Falmouth, MA 02540 Falmouth Main Library 300 Main St. Falmouth, MA 02540 Falmouth East Branch Library 310 E Falmouth Hwy East Falmouth, MA 02536 Zoning Petition The Siting Board will review the Zoning Petition to determine whether the zoning exemptions should be granted, and whether the proposed use of the new Substation is reasonably necessary for the convenience or welfare of the public, pursuant to G.L. c. 40A, § 3. Intervention and Participation Persons or groups who wish to be involved in the Siting Board proceedings, beyond providing comments at the public comment hearing or submitting written comments, may seek either to intervene as a party or to participate as a limited participant. "Intervenor" of "Party" Status: An intervenor can participate fully in the evidentiary phase of the proceeding, including the right to participate in evidentiary hearings, file a brief, and appeal the final order. "Limited participant" status: A limited participant receives documents during the proceeding and may file a brief. A petition to intervene must demonstrate that the petitioner is substantially and specifically affected by this proceeding. See below for filing instructions. For additional information on the Siting Board's procedural rules, please see the following link: https://www.mass.gov/how-to/filea-petition-to-intervene-in-an-efsb-or-dpu-siting-case. Filing Instructions Written comments on the Zoning Petition, or a petition to intervene or participate as a limited participant in this proceeding, must be filed in two places: First, the petition to intervene or participate, and comments, must be filed with the Siting Board in electronic format, by email or email attachment to dpu.efiling@mass.gov; AND to Donna.sharkey@mass.gov no later than the close of business on Friday, May 29, 2026. The text of the e-mail must specify: (1) the docket number of the proceeding (EFSB 25-11); (2) the name of the person or entity submitting the filing; and (3) a brief description of the document. The electronic filing should also include the name, title, and telephone number of a person to contact in the event of questions about the filing. Second, the petition or comments must be sent electronically to counsel for the Company, Catherine J. Keuthen, Esq., Keegan Werlin LLP, One Cranberry Hill, Suite 304, Lexington, MA 02421, ckeuthen@keeganwerlin.com. Accommodation Requests Reasonable accommodations for people with disabilities (e.g., Braille, large print, electronic files, audio format) are available upon request. To submit a request for an accommodation, please email Melixza Esenyie - Non-Discrimination Coordinator and Director of Diversity, Equity, and Inclusion, Massachusetts Executive Office of Energy and Environmental Affairs at, eeadiversity@mass.gov, or call 617-626-1282. In your communication, please include a description of the request in as much detail as possible and a way we can contact you if we need more information. Please allow at least one-week advance notice. Last-minute requests will be accepted but we may be unable to fulfill the request. Language interpretation services are available upon request. Include in your request the language required and a way to contact you if we need more information. Requests may be made at least one week in advance. It may not be possible to accommodate last-minute requests. Contact the Presiding Officer for more information (contact information below). Non-discrimination Notice The Siting Board does not discriminate on the basis of race, color, national origin, disability, age, sex, income, ethnicity, class, disability, religious creed or belief, gender identity, sexual orientation, genetic information, English language proficiency, or ancestry in administration of its programs or activities. See the Siting Board's Non-Discrimination Notice at: https://www.mass.gov/info-details/efsb-non-discrimination-notice-and-grievance-procedure. If you believe that you have been discriminated against with respect to a Siting Board program or activity, you may contact Melixza Esenyie (identified above) to learn how and where to file a complaint of discrimination. Contact For further information about the proceeding, please contact the Presiding Officer at the address or telephone number below: Donna Sharkey, Presiding Officer Energy Facilities Siting Board One South Station Boston, MA 02110 617-305-3625 Donna.sharkey@mass.gov Project Description The Company states that the zoning exemptions are needed for the Company to maintain a reliable electric power system and to enable distributed generation facilities to safely interconnect and operate. The Project includes rebuilding the Falmouth Tap Switching Station to a three-bay, breaker-and-a-half substation design and installing a new 115 kV step-down bulk power transformer and distribution switchgear. The Company states that the Project requires increasing the fenced yard of the Switching Station from 0.6 acres to 2.6 acres and removing 4.1 acres of trees. The Company estimates that it will take approximately 30 months to complete construction of the Project following receipt of all necessary permits and permit exemptions. The Project's current cost estimate is approximately $99.4 million, at an anticipated accuracy level of -25%/+50% Construction would include installing temporary 115 kV switching facilities with a single 115 kV circuit breaker on the Project site. This would temporarily reconnect the existing four 115 kV overhead transmission lines to the temporary 115 kV switching facilities. Four temporary transmission structures would be constructed to reroute the lines. Three of the temporary structures would have an average height of 83 feet and one temporary structure would have an average height of 70 feet. After the Company constructs the new Substation and it is operational, the Temporary Switching Facilities will be dismantled, and temporary structures will be removed. April 30, May 7 2026 LNEO0501274

Public Hearing — 228 Sam Turner Road, Falmouth, MA (EFSB 25-11)

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