The Maine Public Utilities Commission unanimously approved $1.4 billion in transmission upgrades requested by Central Maine Power, including a new 345 kV line to the New Hampshire border. The plan was a compromise settlement that also included non-transmission alternatives like demand response and energy efficiency in certain areas. You can read the official statement of MPUC here.
Though the upgrades are contained within the state of Maine, the impact will be felt throughout New England. Back in March, the Independent System Operator for New England (ISO-NE) approved regional cost allocation for the upgrades based on state energy use. Under this approach, Maine pays 8% of the cost.
You can read more about New England states’ attempts to regionalize transmission and renewable energy development here.