Burning corn (and many other grains, too: wheat, rice, sorghums, millets, oats, rye, barley, rye, triticale, buckwheat, fonio, cherry pits, olive pits and grains) to heat your home may sound weird, but here's how it works and why it's good for you and the planet. Corn is a renewable resource that can produce a new crop every year. As the corn grows it absorbs carbon dioxide (a major climate-changing gas). As the kernels are burned they release no more CO2 than they absorbed. In fact, a lot of the CO2 remains in the corn stalk and roots, which in turn end up stored in the soil.
The corn and the grains we recommend to use in CARBOROBOT boiler in mixtures with other fuels(coal, pellet or woodchips) The mixing values need to determinate by the probes. There is possible try to burn other grains clean(not in mixes) but the properity of materials may vary in wide range and we can not predict the result.

The high heating value of bone-dry corn grain, ~19 MJ/kg, is about 1/3 of that of methane. The commercial corn grain with 15 or more percent of moisture will have the heating value of about 15 MJ/kg.

When the price of corn is low and the price of energy high, agricultural producers may wonder if it would be cheaper to burn shelled corn rather than propane.

Buffington developed a chart to help people decide whether to burn shelled corn or propane. To use the chart, you find the intersection point of the value of shelled corn (vertical axis) and the price of propane (horizontal axis). "The territory where the intersection point falls tells you whether it's cheaper to burn shelled corn or propane," Buffington says.