Eversource: On Jan. 1, a residential customer using an average of 600 kWh will see an increase in their bill of approximately 26% compared to December.....The supply portion of your bill, or the cost of electricity (Basic Service), is significantly higher this winter because of record high natural gas prices, which are having the biggest impact on bills. This is especially true in New England where natural gas is used to generate much of the region’s electricity. [see comment]