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Pyrolytic characteristics and kinetics of cassava stalk as a renewable energy source were studied using a thermogravimetric (TG) analyzer. Around 10 mg powder of the sample was heated up in the chamber under inert conditions with 50 ml/min nitrogen flow rate and operated at a heating program of 20 oC min-1. The pyrolysis process of cassava stalk was taken place into three main stages, in which the peak reaction occurred at the second stage with 70% of the mass was degraded. The differential method of Arrhenius kinetic evaluation resulted in the values of reaction order (n) that was 0.99, activation energy that was 89.46 kJ/mol and logarithmic frequency factor (logA) was 7.7 min-1.