The summary of the Index of Eight Core Industries (base: 2011-12) is given at the Annexure.

The Eight Core Industries comprise 40.27 per cent of the weight of items included in the Index of Industrial Production (IIP).  The combined Index of Eight Core Industries stands at 123.9 in November, 2017, which was 6.8 per cent higher as compared to the index of November, 2016. Its cumulative growth during April to November, 2017-18 was 3.9 per cent.

Coal

          Coal production (weight: 10.33 per cent) declined by 0.2 per cent in November, 2017 over November, 2016. Its cumulative index increased by 1.5 per cent during April to November, 2017-18 over corresponding period of the previous year.

Crude Oil

          Crude Oil production (weight: 8.98 per cent) increased by 0.2 per cent in November, 2017 over November, 2016. Its cumulative index declined by 0.2 per cent during April to November, 2017-18 over the corresponding period of previous year.

Natural Gas

          The Natural Gas production (weight: 6.88 per cent) increased by 2.4 per cent in November, 2017 over November, 2016. Its cumulative index increased by 4.4 per cent during April to November, 2017-18 over the corresponding period of previous year.

Refinery Products

          Petroleum Refinery production (weight: 28.04 per cent) increased by 8.2 per cent in November, 2017 over November, 2016. Its cumulative index increased by 3.6 per cent during April to November, 2017-18 over the corresponding period of previous year.

Fertilizers

          Fertilizer production (weight: 2.63 per cent) increased by 0.3 per cent in November, 2017 over November, 2016. Its cumulative index declined by 1.1 per cent during April to November, 2017-18 over the corresponding period of previous year.

Steel

          Steel production (weight: 17.92 per cent) increased by 16.6 per cent in November, 2017 over November, 2016. Its cumulative index increased by 7.2 per cent during April to November, 2017-18 over the corresponding period of previous year.

Cement

          Cement production (weight: 5.37 per cent) increased by 17.3 per cent in November, 2017 over November, 2016. Its cumulative index increased by 0.6 per cent during April to November, 2017-18 over the corresponding period of previous year.

Electricity

          Electricity generation (weight: 19.85 per cent) increased by 1.9 per cent in November, 2017 over November, 2016. Its cumulative index increased by 4.9 per cent during April to November, 2017-18 over the corresponding period of previous year.

Note 1: Data for September, 2017, October, 2017and November, 2017 are provisional.

Note 2: Since April, 2014, Electricity generation data from Renewable sources are also included.

Note 3: The industry-wise weights indicated above are individual industry weight derived from IIP and blown up on pro rata basis to a combined weight of ICI equal to 100.

Note 4: Release of the index for December, 2017 will be on Wednesday, 31^st January, 2018.

Annexure

Performance of Eight Core Industries

Yearly Index & Growth Rate

Base Year: 2011-12=100

Index

Sector	Weight	2012-13	2013-14	2014-15	2015-16	2016-17	Apr-Nov 2016-17	Apr-Nov 2017-18
Coal	10.3335	103.2	104.2	112.6	118.0	121.8	108.0	109.6
Crude Oil	8.9833	99.4	99.2	98.4	97.0	94.5	94.5	94.3
Natural Gas	6.8768	85.6	74.5	70.5	67.2	66.5	66.1	69.1
Refinery Products	28.0376	107.2	108.6	108.8	114.1	119.7	118.6	122.8
Fertilizers	2.6276	96.7	98.1	99.4	106.4	106.6	107.8	106.6
Steel	17.9166	107.9	115.8	121.7	120.2	133.1	129.5	138.8
Cement	5.3720	107.5	111.5	118.1	123.5	122.0	123.4	124.2
Electricity	19.8530	104.0	110.3	126.6	133.8	141.6	143.1	150.1
Overall Index	100.0000	103.8	106.5	111.7	115.1	120.5	118.5	123.1

Growth Rates (in per cent)

Sector	Weight	2012-13	2013-14	2014-15	2015-16	2016-17	Apr-Nov 2016-17	Apr-Nov 2017-18
Coal	10.3335	3.2	1.0	8.0	4.8	3.2	1.2	1.5
Crude Oil	8.9833	-0.6	-0.2	-0.9	-1.4	-2.5	-3.5	-0.2
Natural Gas	6.8768	-14.4	-12.9	-5.3	-4.7	-1.0	-3.6	4.4
Refinery Products	28.0376	7.2	1.4	0.2	4.9	4.9	6.9	3.6
Fertilizers	2.6276	-3.3	1.5	1.3	7.0	0.2	1.7	-1.1
Steel	17.9166	7.9	7.3	5.1	-1.3	10.7	10.2	7.2
Cement	5.3720	7.5	3.7	5.9	4.6	-1.2	4.4	0.6
Electricity	19.8530	4.0	6.1	14.8	5.7	5.8	6.4	4.9
Overall Index	100.0000	3.8	2.6	4.9	3.0	4.8	5.3	3.9

Performance of Eight Core Industries

Monthly Index & Growth Rate

Base Year: 2011-12=100

Index

Sector	Coal	Crude Oil	Natural Gas	Refinery Products	Fertilizers	Steel	Cement	Electricity	Overall Index
Weight	10.3335	8.9833	6.8768	28.0376	2.6276	17.9166	5.3720	19.8530	100.0000
Nov-16	132.5	90.6	66.9	116.5	111.5	120.1	107.3	134.9	116.1
Dec-16	142.0	96.2	68.4	124.9	108.8	137.5	115.0	137.8	124.1
Jan-17	144.1	96.9	68.4	122.0	107.2	142.6	117.6	138.9	124.8
Feb-17	141.4	88.1	63.2	112.1	97.2	134.9	112.2	130.2	116.9
Mar-17	169.5	97.4	69.1	128.9	103.6	146.2	131.8	147.9	132.5
Apr-17	103.1	92.6	63.5	116.0	89.0	134.1	122.3	150.6	118.7
May-17	111.8	97.6	69.7	125.4	98.3	142.9	128.6	158.1	126.8
Jun-17	107.6	94.1	69.3	119.4	107.3	138.0	132.0	147.4	121.7
Jul-17	98.5	96.4	72.2	119.4	108.6	131.3	122.4	151.9	120.4
Aug-17	101.3	95.1	69.5	121.6	115.4	139.0	117.3	155.4	123.0
Sep-17	103.1	92.0	68.8	122.7	105.3	138.7	119.8	150.5	122.0
Oct-17	119.4	95.7	71.0	132.1	116.8	146.5	125.2	149.8	128.6
Nov-17	132.2	90.8	68.5	126.0	111.8	140.1	125.9	137.4	123.9

Growth Rates (in per cent)

Sector	Coal	Crude Oil	Natural Gas	Refinery Products	Fertilizers	Steel	Cement	Electricity	Overall Index
Weight	10.3335	8.9833	6.8768	28.0376	2.6276	17.9166	5.3720	19.8530	100.0000
Nov-16	6.1	-5.4	-2.1	-0.7	4.2	5.4	0.5	9.5	3.2
Dec-16	3.6	-0.8	-0.4	5.4	-2.9	15.9	-8.7	6.4	5.6
Jan-17	3.5	1.3	11.6	0.0	-1.2	11.3	-13.3	5.2	3.4
Feb-17	6.6	-3.4	-2.1	-2.8	-4.0	8.7	-15.8	1.2	0.6
Mar-17	10.6	0.9	9.6	2.0	-3.0	11.0	-6.8	6.2	5.2
Apr-17	-3.3	-0.6	2.0	0.2	6.2	9.0	-5.2	5.3	2.6
May-17	-3.2	0.7	4.5	5.4	-5.9	3.8	-1.4	8.2	3.9
Jun-17	-6.7	0.6	6.4	-0.2	-2.7	6.0	-3.3	2.2	1.0
Jul-17	0.6	-0.5	6.6	-2.7	0.2	9.4	1.0	6.6	2.9
Aug-17	15.4	-1.6	4.2	2.4	-0.6	2.2	0.7	8.3	4.4
Sep-17	10.4	0.1	6.3	8.1	-7.7	3.7	0.1	3.4	4.7
Oct-17	3.9	-0.4	2.8	7.5	3.0	8.4	-1.3	3.2	5.0
Nov-17	-0.2	0.2	2.4	8.2	0.3	16.6	17.3	1.9	6.8

Index of core industries shows mixed sectoral growth, with strong gains in steel and cement and provisional recent-month data. The release reports the Index of Eight Core Industries (base 2011-12=100), which account for 40.27% of IIP weight, presenting monthly, cumulative and annual indices and growth rates for November 2017 and April-November 2017-18. It shows sectoral divergences with notable monthly increases in Refinery Products, Steel and Cement, a marginal decline in Coal, and a small rise in Crude Oil. Industry weights are derived from IIP and scaled so the combined weight equals 100, and provisional status is noted for recent months with renewable electricity included since April 2014.