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313-343 Project

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Project Overview

Construction of the 313/343 project is now complete as of June 2026. The project team will continue to work on restoration where needed along the 313/343 project route. If you have any questions, you may still contact us through our Project Engagement Lead, Julia Kaplan, by phone at (857) 939-0491, by the project email, info@centralmassreliability.com, or the contact form on this website. The completion of the 313/343 project and the completion of the O141P142 project in January 2026, finalizes the Central Mass Reliability Projects as a whole. Over the course of these two projects, National Grid replaced structures, performed maintenance, installed Optical Ground Wire (OPGW), and upgraded existing and installed new access routes. These upgrades will allow more renewable energy resources to connect into the grid. Addressing climate change requires a major expansion of renewable energy and the infrastructure necessary to support and deliver that energy. These upgrades will allow more renewable energy resources to connect to the grid and will further National Grid’s commitment to ensuring its system is ready to meet that challenge. We thank you for your patience, cooperation, and curiosity throughout this process.

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