Pembroke Substation
About the Project
In 2019, National Grid studied the electric system in and around Hanover to assess reliability, safety, and equipment needs across multiple substations. The study found that building a new 115-kilovolt substation in Pembroke, which currently has no substation, would best meet local power needs. Building a substation at this location would improve reliability for Pembroke and nearby communities by adding a third transmission supply and connecting to Eversource’s 191 line. The project would also add four feeder ties to improve safety and make power delivery more reliable. Overall, the new substation would provide faster and more dependable electric service, especially by allowing for quicker restoration during outages.
Project Benefits
Improved reliability – The new substation will provide safer and more reliable electric service to customers in the area.
Faster outage response – Customers in Pembroke will see quicker response times during outages because crews will be able to isolate problems and restore power more quickly.
Meets growing energy demand – The new 115-kilovolt substation will help meet the growing demand for electricity in Massachusetts.
News and Updates
Coming Soon.
- Dec - Initiate Zoning Permitting Begins
- May - Local Permitting - Attorney General Review Begins
- Oct - Gate C Approval Begins
- Jan - Local Permitting - Zoning / Special Permit Approved Begins
- Nov - Initiate Permitting Begins
- Dec - Engineering and Design Completed Begins
- Jan - Gate C1 Approval Begins
- Apr - All Permits in Hand Begins
- Nov - Construction Begins
- Feb - Site Restoration Begins
- Apr - Site Restoration Complete
- Apr - Eversource 191 Line Outage Begins
- Apr - Eversource 191 Line Outage Complete
- Aug - Overall Ready for Load Begins
- Nov - Construction Complete
Phases of Construction
-
Site Preparation
The first step is removing buildings, trees, and brush as needed. This work allows construction crews to safely build access roads and remove trees that could fall onto the power line.
-
Environmental Controls
Next, steps are taken to protect the area during construction. These may include placing mats, silt fences, and concrete washout containers.
-
Transmission Line Rebuilding
New foundations and structures are installed, along with fiber-optic cables and new wires. Old structures are removed, and new wires are energized. Crews use heavy equipment, including cranes.
-
Restoration
Once construction is finished, crews will restore the work areas to their original condition as much as possible, unless permits or land agreements specify otherwise.
Contact Us
About the Project
In 2019, National Grid studied the electric system in and around Hanover to assess reliability, safety, and equipment needs across multiple substations. The study found that building a new 115-kilovolt substation in Pembroke, which currently has no substation, would best meet local power needs. Building a substation at this location would improve reliability for Pembroke and nearby communities by adding a third transmission supply and connecting to Eversource’s 191 line. The project would also add four feeder ties to improve safety and make power delivery more reliable. Overall, the new substation would provide faster and more dependable electric service, especially by allowing for quicker restoration during outages.
Project Benefits
Improved reliability – The new substation will provide safer and more reliable electric service to customers in the area.
Faster outage response – Customers in Pembroke will see quicker response times during outages because crews will be able to isolate problems and restore power more quickly.
Meets growing energy demand – The new 115-kilovolt substation will help meet the growing demand for electricity in Massachusetts.
Timeline
Phases of Construction
-
Site Preparation
The first step is removing buildings, trees, and brush as needed. This work allows construction crews to safely build access roads and remove trees that could fall onto the power line.
-
Environmental Controls
Next, steps are taken to protect the area during construction. These may include placing mats, silt fences, and concrete washout containers.
-
Transmission Line Rebuilding
New foundations and structures are installed, along with fiber-optic cables and new wires. Old structures are removed, and new wires are energized. Crews use heavy equipment, including cranes.
-
Restoration
Once construction is finished, crews will restore the work areas to their original condition as much as possible, unless permits or land agreements specify otherwise.