Another mushroom thread.
My source regarding availability is two suppliers locally. I have yet to run out despite my failure to pre-buy this year. Europe has been heating with pellet stoves for years - this is not new technology - just newly employed in the US.
I can't speak for the left coast but the pellets produced in the east primarily come from Canada (Quebec Province) and the large plant in Jaffrey NH. Obviously, they go out under various names like Qubix, Comfy Cozy, NE and Northern to name a few.
I like hardwood pellets but they are also made with softwood. My stove produces more ash with soft, thus my preference. I tried 90% wood /10% corn and it also produced more ash. Since furniture production must be down, I would concede that hardwood pellets may possibly be harder to get but softwood sources will never end. When people don't build new homes, they certainly repair and expand existing ones. Quebec Province produces lumber for export to Europe and the US. To their credit the Canadians manage their forests far better than I have seen here. There isn't the degree of clear cutting that has gone on in Northern Maine for years.
We can all speculate as to the availability of pellets in the future, but one thing seems certain to this writer - It will be cheaper than oil in the long run. How long do you think $1.65 a gallon gas will last ? I will place my bet on the lumber industries as opposed to the greedy oil barons.
Bottom line - Pellet stoves work great with little mess and astounding efficiency. I have to concede that there may be times when hardwood pellets are in short supply (not as of this time though) but softwood works fine with maybe 20% more ash. Instead of using a 2 gallon metal bucket to dispose of the ash, you may need a 3 gallon. The ash by the way is a fabulous fertilizer.
As an aside, the aforemention places - Northern Maine and Quebec Province are fabulous places for the outdoorsman. Some of the best trout fishing locales you will find. A float plane took 4 of us to remote cabins on a remote lake (Lac St. Jean) and dropped us off for a week of fishing in the wilderness at the border of Labrador. The only problem is that we ran out of beer by weeks end.(could only bring 8 cases). Seeing the Northern Lights when you are that far away from civilization was worth the price of the whole trip.
My 4c
Bill