Here in the US, WV gets 95% of it's power from fossil - 80% coal, 15% ng.I think the conversion to electric (for many) is less a "solution" and more an "intention" to move forward.
Here in coal-fuelled Alberta, owning an electric car is actually more carbon producing than a Honda Civic. Next door in hydro-powered BC it is way, way less. Doesn't stop concerned Albertans from buying electric cars, and IMHO it shouldn't—the more common it becomes the more likely it is that it will eventually make a significant difference.
So more power to the electric boaters!
Even the best state, Oregon, only gets 45% of it's power from newables. Meanwhile Quebec and BC get 95% and 88% respectively.
We need to do better.