NATIONAL GRID RHODE ISLAND has proposed winter electricity rates that would increase customers' bills by an average of 16% over summer rates. / PBN FILE PHOTO/ MARK S. MURPHY
PROVIDENCE – National Grid Rhode Island customers would see their electricity bills rise by 16% on average this winter over current summer rates and 2.2% from last year's winter rates, according to a proposal submitted to the R.I Public Utilities Commission, the company announced on Thursday. For an average residential customer who uses 500 kilowatt-hours…