The projected emissions of any emission sector for a given scenario can be computed with the Spain’s Emission Projections
Model (SEP), whose outputs are compatible with AERIS (Lumbreras et al., 2008) and which has been applied for a number of scenarios as published in Lumbreras et al. (2009). Focussing on a relevant sector (i), the projected emissions quantified by SEP (PR,i) allow the emission module to compare them with those of the baseline scenario (BS,i) and to consistently estimate a variation percentage (VPi) as indicated in Eq. (1).