LCCP varies from TEWI in that it includes several things that are not included in TEWI. These are the greenhouse gas emissions associated with the embodied energy of equipment and fluids, as well as the direct fugitive emissions during their manufacturing. Pearson discovered that fugitive emissions and embodied energy for the manufacturing of R-134a and R-404A accounted for less than 1% of the GWP value, far less than the uncertainty in an LCCP estimate for stationary equipment.