April 18, 2019: The Massachusetts Department of Public Utilities has granted Eversource permission to go ahead with plans to deploy 40MWh of lithium ion batteries to deliver emergency power in Massachusetts, US, the US power utility announced on April 5.
The first project is a 25MW/38MWh system to deliver black-start services and offset high electric usage in Provincetown, Truro and Wellfleet.
The battery will provide 10 hours of back-up power in the winter and up to three hours at the height of summer.
Provincetown town manager David Panagore, said the project would eliminate roughly half of the area’s power outages entirely, and “when it can’t it will provide precious hours to prepare for an extended interruption”.
The ESS will defer 13 miles of power distribution line construction.
The project should start at the end of the year and be in service by the end of 2020.
A second planned battery project is a 15MW lithium ion system on the island of Martha’s Vineyard that will replace diesel generator supply during periods of high demand, providing a backup to supplement power supplied from the mainland by four undersea cables. If plans are approved by MDPU, Eversource expects to start work this year on the first part, a 5MW with the additional capacity installed by the end of next year.