| Mass | Based on the mass of substances | • Simple calculation | • Significant contribution differences due to atomic weight variations• Difficult to reflect energy contribution |
| Moles | Considers chemical participation and number of molecules | • Allows verification of chemical contribution• Preventing underestimation and overestimation by atomic weight | • Difficult to reflect energy contribution |
| Economic value | Reflects market value and commercial importance | • Emphasizes valuable outputs in the market | • Highly sensitive to market fluctuations• Difficult to reflect physical and chemical contributions |
| LHV | Reflects energy content | • Allows assessment of energy contribution of high-energy-density substances | • Unsuitable if outputs are not energy sources |