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The growth of eight core infrastructure industries grew by 4.4 percent in September 2021 as compared to same month last year on account of healthy performance by segments like natural gas, refinery products and cement. The eight infrastructure sectors had grown by 0.6 percent in September 2020. The Eight Core Industries - coal, crude oil, natural gas, refinery products, fertilisers, steel, cement and electricity - comprise 40.27% of the weight of items included in the Index of Industrial Production (IIP).   

Coal production having 10.33 percent weight increased by 8.1 percent in September, 2021 over September, 2020 and its cumulative index increased by 11.7 percent during April to September, 2021-22 over corresponding period of the previous year. Natural Gas production having 6.88 percent weight increased by 27.5 percent in September, 2021 over September, 2020 and its cumulative index increased by 22.1 percent during April to September, 2021-22 over the corresponding period of previous year.

Petroleum Refinery production having 28.04 percent weight increased by 6.0 percent in September, 2021 over September, 2020 and its cumulative index increased by 11.2 percent during April to September, 2021-22over the corresponding period of previous year. Fertilizers production 2.63 percent weight increased by 0.02 percent in September, 2021 over September, 2020 and its cumulative index decreased by 1.3 per cent during April to September, 2021-22 over the corresponding period of previous year. Steel production having 17.92 percent weight increased by 3.0 percent in September, 2021 over September, 2020 and its cumulative index increased by 35.0 percent during April to September, 2021-22 over the corresponding period of previous year. 

Cement production having 5.37 percent weight increased by 10.8 per cent in September, 2021 over September, 2020 and its cumulative index increased by 37.7 percent during April to September, 2021-22 over the corresponding period of previous year. Electricity generation having 19.85 percent weight increased by 0.3 percent in September, 2021 over September, 2020 and its cumulative index increased by 12.7 percent during April to September, 2021-22 over the corresponding period of previous year. On the flip side, Crude Oil production having 8.98 percent weight declined by 1.7 percent in September, 2021 over September, 2020. Its cumulative index declined by 2.9 per cent during April to September, 2021-22over the corresponding period of previous year.