The overall cost of the conditional INDC is US $6.25 billion, or 87%, and the overall cost of the unconditional INDC is US $827 million, or 13%, as shown in the table below (summary of GHG emissions reductions and costs for 2020-2030).GHG reduction in comparison to BaU 2020 GHG reduction in comparison to BaU 2030 Costs compared to BaU 2030 in billions of USD 4.4 Ambition and fairness Nigerâs GHG emissions of 30,801 GgCO2 e represent 2.8 t per inhabitant and only 0.061% of world CO2 emissions. Since it is non- Annex I Party to the UNFCCC, Niger does not have a quantitative obligation in terms of mitigation.