Abstract: Impact of charred Palm Kernel shell on the calorific value of composite sawdust briquette is discussed in this study. Composite sawdust briquettes were produced by mixing screened sawdust waste and palm kernel shell of grades 1.18, 2.00 and 2.36 mm in percentage ratios of 90:10, 80:20, 70:30, 60:40 and 50:50, respectively and starch gel was used to bind the mixtures, respectively in their ratios. Calorific tests were carried out on the samples using the Gallenkhamp Calorimeter to determine the energy contents. The results indicates that the addition of palm kernel shell in various proportions increases the average calorific values when compared to the briquette produced from 100% pure sawdust material. It was observed that the finer the grade (i.e., 1.18 mm) of palm kernel shell in the briquette, the higher is the calorific value up to a percentage by weight of 30%. Furthermore, from the results of the Analysis of Variance (ANOVA) carried out, the effect of variation of the different grades of palm kernel shell on the calorific value is highly significant at both 0.05 and 0.01 level of significance. Also with respect to the effect of percentage composition, there is a significant added variance component on the calorific value at 0.05-level of significance but not at 0.01-level of significance. This indicates that both the grade of charred palm kernel shell and percentage composition have effect on the calorific values. There is no significant interaction between the two factors A and B at any level of significance. This indicates that the two factors are not dependent on each other.