About 1/3 of our electricity comes from Hydro Quebec. The connection is only about 250 MW while our peak demand is closer to 1,000 MW.

Our natural gas does come from Canada. That's why it's only in the NW corner of the state and recently expanded south instead of only in the SE corner and expanding north.

For any electricity not provided by long term contracts or local renewables, it would be come from the New England grid, which is mostly gas power plants connected to the US gas grid, so that's how we could be affected by the gas market. But our utilities buy little market power so the effect is muted.