Fossil fuel is the main energy source used. It won't last forever and alternative energy sources are needed. The use of olive residues from olive mills is a shift toward the real awareness of the community to invest in natural resources. This work aims to shed light on the olive residues from olive mills as a source of fuel used for heating. Thermal analysis was performed to analyze the combustion behavior. These measurements would help in the design of furnaces that use this fuel. Chemical and physical characterization of solid olive residue composition was carried out.