This preview shows page 126 - 129 out of 144 pages.
The remaining 14% comes from deploying low carbon technologies in the electricity and the fuels sector. However, to see, the impact of low carbon technologies in the electricity sector, two scenarios of IESS, 2047, namely Business-As-Usual (i.e. Deterministic Effort) and Clean Coal Technology (i.e. Aggressive Effort) have been considered. Under CCT scenario, the share of electricity generation through coal based power plant will be around 55% in 2032. Therefore, it seems that coal will be major source for electricity even in coming years. Moreover, the share of Ultra-Super Critical technology is slowly being replaced by IGCC under this scenario. The Sub-Critical technology in coal based power plant is projected to retire by 2032. IGCC & Ultra-Super Critical technology will increase nearly 10 percentage point efficiency of the power plants in comparison to Sub-Critical & Super Critical technology. The IGCC & Ultra Super-Critical technology will reduce nearly 30% coal requirement and around 30-50% NOx, Sox, CO, Particulate Matter emissions.Moreover, under CCT scenario, the land requirement may reduce by around 30-35% for the Ultra Super-Critical technology and coal import for coal power generation may fall by one-third. The capex per GW for Ultra Super-Critical technology will be nearly 1.2 time higher than Sub-Critical technology & Super-Critical technology by 2032.Further, the outcome of this study indicates that electrostatic precipitators and fabric filters can 102
remove 99% of the fly ash from the flue gases and flue gas de-sulfurization reduces the output of sulphur dioxide to the atmosphere by up to 97%. Low-NOx burners allow coal-fired plants to reduce nitrogen oxide emissions up to 40%, further, if it is coupled with re-burning techniques, NOx can be reduced 70% and selective catalytic reduction can clean up 90% of NOx emissions. These mitigation measures & intervention of clean coal technologies will help to reduce overall emission intensity including power sector by 38% in 2032 & 52% in 2047 (at the base level of 2005 emission intensity). 103
1. INTRODUCTIONIndia is the world’s third largest coal producing country and second largest coal importer. The country continues to significantly rely on coal for electricity generation, and this abundant and affordable fossil fuel accounts for 61 percent of the country’s electricity output (FY16). As coal will continue to power a large – and possibly even increasing – share of the Indian economy in the foreseeable future, managing the negative side effects of the power industry due to environmental degradation should be seen as a continued priority. Over the past several decades, advancements in clean coal technology (CCT) have managed to reduce the power industry’s negative environmental and health impacts across the globe but lot more needs to be done.