This is a nice explanation how pellets are made. But see you ever walk away that woman? They even mix the wood with soya! After chipping, the grinding takes place, maybe some drying in between so your screen doesnot get stuck, Then some more drying or wetting (depends on your wood) mixing, warm up your mill, cooldown the pellets. I have several augers, mixers, conveyer belds etc. As it goes for energy, about 1 kW for 20 lbs is needed to make pellets. That goes the other way to, if you make dust from wood, it takes another 1 kW for 20 lbs. Another rule in pelletmaking machines, the bigger the better.
Matt, your clients want an easy to use installation, they best buy pellets then. But here in europe they are prices around 20% less then fossile. I don’t know how it is overthere. IMHO it is not worth the hassle of gasifying for that 20%. You have to go all the way like Steve says, it is a way of living that you want, or not. Really, stay away from pellets unless you need a hobby.