Welcome to NGA,
@dubiousjay .
Assuming your post was in response to my statement about a wood stove... a pellet stove would cost a lot more than a "normal" wood stove to begin with, plus we'd have to buy pellets - when we could cut firewood on our own property.
But, the hours of daylight also limit what we could grow here in the winter, even in a heated GH, unless we also had artificial lighting; I think it's much more feasible to preserve what I produce during the spring, summer and fall and save winter for planning next year's garden (and shoveling snow off the deck).