Wang, LK, McGinnis, WC and Wang, MHS (2022). Analysis and formulation of combustible components in non-hazardous solid wastes. In: “Evolutionary Progress in Science, Technology, Engineering, Arts and Mathematics (STEAM)”, Wang, LK and Tsao, HP (eds.), 4 (9A), STEAM-VOL4-NUM9A-SEPT2022. https://doi.org/10.17613/0p7c-wp38. 36 pages. September 2022., Lenox Institute Press, Massachusetts, USA. ……ABSTRACT: The non-hazardous solid wastes from industrial plants are similar to municipal solid wastes (MSW). An industrial plant is planning to reuse its own non-hazardous solid wastes as a supplemental source of fuel to its incinerator. The objectives of this research are: (a) to determine the energy values using both the modified Dulong Formula, and a traditional method; and (b) to determine the empirical chemical formula of the plant’s own solid wastes using the values of ultimate analysis. This publication introduces the various solid wastes, (such as food, paper, cardboard, plastics, textiles, rubber, leather, garden trimming, wood, glass, tin cans, nonferrous metals, ferrous metals, dirt, and ashes), and their physical and chemical compositions (such as, percent by weight, dry weight, moisture content, inert residue, and energy content). Using the available typical MSW information, the energy values for the target industrial non-hazardous combustible solid wastes (excluding the wastes of glass, tin cans, nonferrous metals, ferrous metals, dirt, and ashes) were determined to be 5776 Btu/lb with the modified Dulong Formula and 6045 Btu/lb with the traditional method. The two calculated energy values are very close. The empirical chemical formula of the target solid waste was determined to be C664 H1741 O745 N14.4 S. This formula can be used by the plant’s planners and managers in evaluating the feasibility of alternative uses of the target solid waste such as heat generation and materials recycling.