Moving from burning fuel oil for heating to high efficiency heat pumps powered partly by nuclear seems like a really good thing for lots of reasons.

Also they used to burn fuel oil all year round for electricity, now its just the winter demand peaks. A positive trend.

edit: I also don't understand how 7% can be more than average contribution from wind, since yearly it contributes more like a quarter?

edit: I think(?) the explanation for the discrepancy is comparing Maine to stats from the Wider New England grid. Hence 24% nuclear.