Eversource and BXP broke ground on the Greater Cambridge Energy Program (GCEP). The first-of-its-kind transmission initiative is intended to address the increased electric demand in the region, enhance the resiliency of the transmission system and ensure a flexible grid to reliably serve customers while supporting electrification and decarbonization goals.

GCEP includes Eversource’s first underground substation, reportedly the largest in the country at 35,000 square feet. The substation will be located 105 feet beneath new public green space and integrated into BXP’s Life Sciences Center at the former Kendall Center Blue Garage site in Cambridge, MA.

“The GCEP is a true example of public and private partnership created to solve a critical community challenge,” said Bryan Koop, EVP for BXP’s Boston region.

As part of GCEP, Eversource will also construct eight new 115-kV underground transmission lines spanning 8.3 miles through portions of Cambridge, Somerville and Boston. Additional work includes upgrades to five substations in Cambridge, Somerville and Allston/Brighton, and the construction of 48 new distribution lines.