There are more than 40 mills in North America that manufacture wood pellets. It is a good idea to book your pellets early to lockin a good price for the complete heating season. Most pellet retailers offer early-buy programs to ensure your supply is available.
Small grains are readily available through your local elevator or your local farmer. Many opportunites are available to buy lower cost grains. Some examples are:
These lower quality grains still provide high heat value.