Journal of Electronic Systems Sandra Djosic, Milun Jevtic and Milunka Damnjanovic 13 4 2023 https://doi.org/10.6025/jes/2023/13/4/96-102 https://www.dline.info/jes/fulltext/v13n4/jesv13n4_2.pdf In real-time systems, the power consumption of the fault-tolerant values is measured. We look at real-time systems where fault tolerance is reached by running the job affected by the transient fault one more time using time redundancy Power consumption analysis is performed using a heuristic-based dynamic voltage & frequency scaling algorithm, which we developed. The simulation results demonstrate that our suggested algorithm can be applied to power consumption based on fault tolerance analysis.