As described by Sills et al., the most effective way to evaluate uncertainty in the TEA/LCA results is to incorporate specific uncertainty ranges for every single parameter in the study [22]. However, that approach was unmanageable for this study because there are more than 80 independent variables, 20 end-to-end cases, and three assessment efforts (energetic,economic, and environmental), all of which would need unique uncertainty functions for each variable. Furthermore, many of the parameters do not have a well-known uncertainty range.