1. Coal contains almost twice the BTUs of pellets. 1 ton of coal = approx 24,000,000 BTUs. 1 ton pellets = approx 16,500,000 BTUs. Ton of coal near me is $280 - 320. Ton of pellets is $210-250. That means you will be lifting 1.45 times more 40 lb pellet bags than coal. If you decide to buy coal in bulk and have a few tons delivered at once, you will save even more per ton. As far as I've seen, pellets are sold in 40 lb bags and by the ton. Some friends an I are talking about splitting a tractor trailer load of coal, roughly 20-30 tons for even more savings. I have not seen bulk pellet delivery but perhaps somebody out there is doing so.
These are all valid points, but since I live in the northeast (closer to pellet producers) I'm able to get pellets a little cheaper than what you quoted. There are also several companies that provide bulk pellet delivery, though you need a silo to store the pellets to prevent them from getting moist. I buy ~5 tons of pellets (roughly three pallets) at the end of October to save money. I have two pallets delivered directly into my garage (no carrying required except to the stove), and one sits outside until late February, at which time I unload it into the Garage.
Also, you are arguing that the heat content of coal is ~1.6x greater than pellets. That is true, but from a cost perspective they are roughly the same. Per your quoted prices, one ton of coal is ~1.5-1.6x a ton of pellets. Coal is even more expensive in my area than what you quoted. Anthracite is ~$380/ton, which makes it uneconomical for me.
2. If pellets get wet, they lose structure and decay into a mush. Now they are useless. pellets need to be stored indoors and in non humid locations. With added humidity, you can get mold. Coal is a dense black rock and you can dump it outdoors and come back to it 100 years later, it will still burn. You can burn wet coal.
Again some good and valid points. That said, in 3+ years of burning wood pellets I have never had an issue with storing pellets or having them turn into mush. The pellets arrive on pallets that are wrapped in multiple layers of thick (and recyclable) polyethylene to protect them from water, and can be safely stored outside for a long time.
3. I've noticed some pellet qualities are inconsistent. Some pellets are mostly bark which doesn;t burn well and is not really my definition of 'wood". Coal quality can also vary but in general, coal is coal unlike pellet which is a manufactured product.
Again this is a valid point, but if you buy decent pellets the variances are pretty minimal. I've purchased about 15 tons of pellets from the same supplier over the last 3 years (roughly 750 bags) and the quality has been very consistent from bag to bag.
4. Pellets can be dusty if excessively handled and so can coal. I'm not aware of any dust control strategies for pellets other than handling it carefully. Many coal dealers sell their coal washed and some offer oiled coal. A light coating of oil helps to keep the dust down. Can't do this to pellet since it would turn to mush.
Another valid point, but one which can be avoided by treating a bag of pellets with a bit of care. Not that much care is required. I routinely toss bags of pellets onto one another while unloading them and I don't get much dust. The pellets I buy are pretty hard and glossy, and not all that easy to break even if I try with my bare hands.
5. Pellet and wood burning creates creosote in chimneys. Gooey tarry creosote is a cause of chimney fires and requires frequent sweeping and cleanings. Coal does not produce creosote when burning Coal does produce fly ash which can fill a chimney and eventually clog it. Fly ash typically accumulates in horizontal flue runs and corners. You can clean this with a shop vac. Creosote removal in a chimney from wood requires brushing and sometimes chemicals.
In my experience burning "wood" is not really comparable to burning pellets in terms of creosote formation. Bulk wood has a lot of impurities in it, including sap, bark, etc. Most pellets do not contain those impurities. And unlike bulk wood, wood pellets burn almost completely. Ash content in the low tenths of a percent per bag are not uncommon. FWIW, pellets produce a fair bit of fly ash as well.
6. Anthracite coal burns with a hot blue flame and zero to little smoke. When the whole coal pile catches, it glows red hot and is much like wood charcoal except it is far longer lasting. Your neighbors won't know you are burning anthracite unless you tell them. Given the negative stigma and perceptions everyone has about coal, I'd keep my mouth shut about it and nobody will bother you. The negative perceptions about coal are from a different kind of coal used to power industry, power plants and locomotives. You will not get a belching smokestack effect out your chimney. Actually, I think wood smells stronger and produces more visible smoke than anthracite. Anthracite emissions include CO2, no smell and far less particulates than wood.
I did not know that coal stoves produced no smell. Thanks for the info.
7. Buddy of mine has a coal stove and has recorded easy 24 hour burn times between ashing and adding fresh fuel and a few times he can go to 36 hours. Try that with a wood stove.
I can't argue with your comparison to a wood stove, because I have never used a wood stove. BUT, I routinely run my pellet stove continuously for 168-192 hours (7-8 days) before cleaning. I have to add fuel every 10 hours or so, but that is a limitation of my hopper size and not the heat source itself. After a 7-8 day run I have an ash pan load (~12"x12"x6") of ash to clean out.
I'm not bashing coal per se. I think it an interesting option and one I would consider if it were more economical in my area. But given my circumstances and experience I think I am going to stay with pellets for a while.