Improving energy efficiency and saving, reducing transmission loss, and strongly developing renewable energy have made significant contributions to reducing GHG emissions in the energy sector. It is estimated that the applied measures on economical and efficient use of energy allowed a reduction of about 67.5 Mt CO2eq in 2020 compared to the BAU. Regarding renewable energy development, by 2020, the total hydropower capacity reached 22,022 MW (of which small hydropower reached 3,674 MW); wind power reached 630 MW; biomass power reached 570 MW; solar power, including rooftop solar power, reached 16,491 MW.