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Eversource Celebrates the Completion of Phase I of the Cape Cod Solution Transmission Program

May 22, 2024

Cape Cod Solution transmission offshore wind clean energy reliability

As Cape Cod communities lead the way in facilitating the delivery of clean energy to homes and businesses across New England by supporting the infrastructure needed to connect offshore wind projects to the grid, Eversource is pleased to announce the completion of Phase I of the Cape Cod Solution. Currently one of only two transmission projects underway in New England that will allow for the interconnection of offshore wind, the Cape Cod Solution will enhance reliability for customers, make the system more resilient to storms and other extreme weather, and help meet the commonwealth’s and region’s decarbonization goals while supporting the electrification of the transportation and heating sectors. This co-optimized, multi-phase transmission program involved several components, including the expansion of Eversource’s West Barnstable substation and the installation of an approximately 12.5-mile transmission line. These lines are built with future electric and clean energy interconnection needs in mind, initially operating at 115 kV to immediately enhance service reliability for customers with the capability to increase capacity to 345 kV for the interconnection of clean energy from offshore wind farms as they come online. This initiative improves electric reliability efficiently and cost-effectively on Cape Cod and makes the transmission system more resilient to increasingly extreme weather caused by climate change.