You make it sound like all of it is from North America. There's import from the european continent and scandinavia as well.

Sweden exports a lot of wood pellets. Plenty of woodlands there. Plenty more to grow, if the Union will let them.

Wood pellets are "green" because the source material is replantable, albeit not that much locally for you. Seems like nothing is ever "green enough" though, besides a complete stop in consumption..

The distance from Sweden/Scandinavia/Continental europe is a lot less than from North America.