The company has submitted a proposal to the Department of Public Utilities for an increase of 5 percent for basic service supply rate customers starting Jan. 1.
If approved, the increase would mean customers using an average of 550 kwH of electricity will pay $121 each month instead of $115.
Eversource says the higher cost is due to the increased price of natural gas used to create electricity. The company is urging customers to get a home energy assessment to help reduce their bill.
The department is expected to act on the proposal in the coming weeks.