Maximum consumption of coal is attributed to

Concept: National coal consumption is disaggregated by end-use sector in official energy statistics (power generation, iron & steel, railways, other industry). The sector with the largest, ongoing coal-intensive process dominates total consumption, and comparing sector-wise offtake figures identifies it directly.

Application: In India, coal-fired thermal power stations have been the country's single largest coal consumer since the mid-1970s. Government energy statistics (Ministry of Statistics and Programme Implementation) show electricity generation consuming roughly three-quarters of all coal despatched nationally in recent decades — far exceeding the coking coal used by the iron and steel sector.

Contrast: Checking each option against its own sector-specific coal use:

• Iron and steel plants do consume coking coal in blast furnaces, but this quantity is a small fraction — well under one-tenth — of the country's total annual coal offtake, far below the amount used for electricity generation.

• Railways once ran extensively on coal-fired steam locomotives, but traction converted progressively to diesel and electric power through the second half of the 20th century, with the last broad-gauge steam services ending only in 1995 — so direct coal use by railways today is negligible.

• Coal-fired steamships were gradually phased out over the 20th century in favour of oil-fired steam and diesel propulsion, so coal consumption by shipping today is negligible.

Cross-check: A separate Lok Sabha Standing Committee report independently confirms that about three-quarters of coal consumed nationally is used by the power sector, with railway consumption negligible — corroborating the power sector's share from a second, independent source.

Therefore, the maximum consumption of coal is attributed to energy generation.