Additional emissions reductions of 26 Mton-CO₂ eq. with the existing policies (WEM) or 27 MtonCO₂ eq. with the additional policies (WAM) are projected for the period 2020-2030. CO₂ emissions will fall by 24 Mton- and 25 Mton-CO₂ eq. respectively. Under both policy variants, non-CO₂ emissions will fall by 2.3 Mton-CO₂ eq. All measures taken together will bring about a reduction of the total greenhouse gas emissions in the period 2018-2020 of 18 Mton CO₂-eq. (13%) for both policy variants (WEM and WAM) (see Table 5.5). This reduction will be achieved mainly in CO₂ emissions. -4. Assessment of the aggregate effects of policies and measures and uncertainty analysis