Making pellets is a huge deal. It takes a hammer mill to make the sawdust pelltable, then the pellet machine itself. Then they have to be dried to a low moisture content. I looked into it because while I only burn 3 ton of pellets per year, my father burns 12 ton. But here is the kicker, beyond the cost of pellet making machinery, there is the time. Just the pellet mill alone only produces 600 pounds per hour. That is 50 full hours just at the pellet machine, and that does not count the fuel to power the tractor that drives the pellet machine, or the hammer mill before being pellets, and the drying...
So this is what got me to thinking, if I cannot make pellets efficiently, what can I burn that is already pellet sized, and the answer is corn and sunflower seeds.
So I tried burning corn, and it works. It works amazingly well.
I mix mine 1/3 corn to 2/3 wood pellets, but corn is cheap. I can buy a bag of corn for $9.50 which is higher than wood pellets per bag, BUT it is a 50 pound bag and not 40 pounds, and it has twice as many btu's per pound as wood. And that is retail price, buying straight corn in bulk would be even cheaper!
But could a person grow their own corn?
And the answer I found in doing the math is "very much so".
One big question I had was, what about drying it? But when you put pellets or corn in the hopper, as the stove runs it naturally gets warm and dries the pellets or corn anyway, so there is no need for the corn to be dried first. Just leaving it out in the field to get frost killed will work. And as for harvesting, homemade shellers for corn are cheap and easy to do. What is an acre per year of land dedicated to growing corn when I am using a whole bunch of acres as a firewood source? How many people have "a woodlot just so I can cut a little firewood?" Quite a few, but with corn or sunflowers a person would only need an acre or two. And how hard is it to use our tractors to plow till a spot after doing the garden anyway? A little seed, a little fertilizer and up the corn comes. Wait for a killing frost, a little wind, and then harvest the corn and run it through a sheller. Whalaaaaaa….a product that is sized already to burn in a pellet stove. In the end I figured it is very doable.
Myself, I have more interest in sunflowers, just because I think having a field of them growing would be pretty in the summer, and the "cool factor" of knowing I am going to heat my home with them in the winter would be really neat. "That field of sunflowers is so pretty, what do you plan to do with all of them?" I just grin and say, "Heat my house."