2016 in Sutton I paid almost 500 a month to keep my electric heat(baseboards) going for every month of the winter. I should add it was electric hot water as well, I kept my temp between 65-67. Fortunately nat grid does offer a “year round” program that subsidies those winter costs into your summer costs. So basically u pay 150 a month(example) every month based on ur expected usage. Long story short I just pay a base rate and can budget around that instead of getting a 800 dollar bill in the winter (have seen this first hand).