Plastic pyrolysis is a promising technology for converting plastic waste into valuable products such as bio-gas, bio-oil, and bio-char. This paper presents a computational model that simulates plastic pyrolysis at various heating rates, emphasizing optimizing energy efficiency. Using a MATLAB-based computational approach, we model the thermal decomposition of plastics and analyze the impact of different heating rates (1 ℃/s, 10 ℃/s, 20 ℃/s, and 50 ℃/s) on energy consumption and the yield of pyrolysis products. This study demonstrates that the heating rate plays a significant role in yield distribution and the overall energy efficiency of the pyrolysis process. The findings aim to support kinetic modeling practices and energy efficiency assessments in thermochemical waste-to-energy systems, particularly in contexts where energy optimization and sustainability are prioritized.