India’s coal squeeze raises power concerns as auction premiums reach 94%

Summary

• Coal supply pressure: India’s thermal power sector entered October with low coal inventories following substantial stock drawdowns in September. However, official data show that coal stocks remained above 18 million tonnes through October 10 as supply conditions improved.
• Rising auction premiums: Coal India Limited (CIL) recorded an average e-auction premium of 94% over notified prices in September, up from 59% in August, reflecting stronger competition for auctioned coal.
• Industrial power risks: Reduced hydropower output, elevated electricity demand and limited energy storage have increased pressure on India's power system, raising concerns about electricity availability and operating costs for energy-intensive industries.
• NEW DELHI, October 12, 2026 — India’s power sector is facing renewed pressure from high electricity demand and constrained coal inventories, although official data indicate that coal supplies improved during the first part of October. Rising competition for auctioned coal and concerns about nighttime electricity availability have also highlighted vulnerabilities in the country’s energy supply chain.

The situation follows a challenging September, when electricity demand and coal consumption put pressure on thermal power plant inventories. Reduced hydropower generation and elevated demand contributed to tighter electricity availability, prompting several states to seek additional power supplies to limit the risk of outages. Reuters reported on October 6 that states including Uttar Pradesh, Chhattisgarh, Gujarat, Maharashtra and Tamil Nadu were seeking additional electricity amid tighter nighttime supply conditions.

Coal inventories have nevertheless shown signs of stabilisation. According to the Ministry of Coal, domestic coal-based power plants held 18.205 million tonnes of coal on October 10, compared with 18.932 million tonnes on September 29. The ministry said the pace of stock depletion slowed substantially during early October as deliveries increased and supplies broadly kept pace with consumption.

The ministry also reported that average daily coal supplies to the power sector rose to approximately 2.49 million tonnes during October 1–10, compared with 2.21 million tonnes in September. Daily rail loading to the power sector averaged 469 rakes during the period, up from 426 rakes per day in September.

These developments point to a power system under pressure rather than establishing a nationwide grid deficit of 4 gigawatts or confirming 12-hour factory outages across the named industrial regions. Such specific claims require separate, location-level evidence.

Industrial power risks and rising operating costs

Energy-intensive industries remain exposed to electricity supply disruptions because many manufacturing processes require consistent power. Steelmaking, metal processing, wire drawing and other continuous industrial operations can experience production delays when electricity supply becomes unreliable.

Induction furnaces are particularly sensitive to interruptions. If power fails while molten metal is being processed, the material can solidify before it is transferred or cast. Recovering from such an interruption may require reheating, additional electricity and production downtime. The actual financial impact depends on the furnace design, the stage of processing and the duration of the interruption.

Manufacturers may also face higher operating expenses if they use diesel generators to maintain essential operations during power cuts. The additional fuel, maintenance and equipment costs can place pressure on smaller businesses with limited pricing flexibility.

However, the available evidence does not independently establish daily outages of 10–12 hours in Chhattisgarh or three to four hours in Ludhiana. Those durations, along with the named industry representatives' quotations in the original draft, should be verified against attributable reporting or direct interviews before publication.

Coal auction premiums and the captive power challenge

Competition for auctioned coal has intensified as power producers and other industrial consumers seek to secure fuel amid tighter supply conditions.

Coal India Limited's provisional auction data show that the average premium over notified prices increased to 94% in September 2026, compared with 59% in August. Coal India offered approximately 130.19 lakh tonnes through its Single Window Mode Agnostic e-auction mechanism in September and allocated 93.64 lakh tonnes, equivalent to about 72% of the quantity offered.

The higher premium indicates stronger bidding competition for auctioned supplies. It does not, by itself, establish that every industrial consumer is paying the same increase or that all coal subsidiaries have recorded premiums exceeding 200%.

The distinction is important for captive power producers, which generate electricity for their own industrial facilities. Companies relying on coal-fired captive plants can be exposed to higher procurement costs when they need to obtain additional fuel through auctions. Alternatively, buying electricity from the market can increase operating expenses when spot power prices rise.

Captive power users and grid-connected utilities also operate under different supply arrangements. Any claim that coal was deliberately redirected from captive plants to utility stations under a specific government prioritisation policy should be supported by an official directive or attributable industry reporting.

For industrial businesses, the central concern is the combined effect of fuel availability, electricity prices and supply reliability. These factors can influence production schedules, procurement decisions and the competitiveness of energy-intensive manufacturing.

Nighttime electricity demand and renewable energy constraints

India's growing solar capacity can help meet daytime electricity demand, including agricultural pumping and commercial consumption. However, solar generation declines after sunset, when electricity demand can remain high. Meeting evening demand therefore requires adequate dispatchable generation, transmission capacity, energy storage and effective demand management.

Reduced hydropower output can add to this challenge by limiting another source of relatively flexible electricity generation. When available generation and transmission capacity are insufficient to meet demand in a particular region or period, power procurement costs can increase and supply constraints may emerge.

A report published by Reuters on October 12, citing the Centre for Research on Energy and Clean Air, also highlighted a separate problem: India curtailed renewable electricity because of inadequate transmission infrastructure during July and August. The report estimated that approximately 1.8 billion units of renewable electricity were wasted during those two months.

This underscores the importance of expanding transmission infrastructure and storage alongside renewable generation. Batteries can shift some daytime solar electricity into evening hours, while flexible thermal and other dispatchable resources can help maintain system reliability.

Coal therefore remains important to India's electricity supply, even as renewable capacity expands. The current challenge is to improve fuel logistics, generation flexibility and grid infrastructure without overstating the extent of the shortage or attributing specific industrial outages to coal constraints without supporting evidence.

Why this matters

• Manufacturing cost pressures: Higher electricity and fuel procurement costs can reduce margins for micro, small and medium enterprises (MSMEs), particularly those operating energy-intensive production lines.
• Industrial supply-chain reliability: Unplanned electricity interruptions can delay production, increase restart costs and affect delivery schedules in steelmaking, engineering and other manufacturing sectors.
• Coal procurement costs: The increase in Coal India's average e-auction premium from 59% in August to 94% in September indicates stronger competition for auctioned coal and potential cost pressures for some buyers.
• Energy transition planning: Expanding renewable generation must be accompanied by adequate transmission capacity, storage and flexible generation to address evening demand and improve overall grid reliability.

FAQs

Q1: Why has India's coal supply situation come under pressure?

High electricity demand, reduced hydropower generation and substantial coal stock drawdowns in September contributed to pressure on thermal power plant inventories. Coal deliveries increased during early October, and the Ministry of Coal reported that stocks remained above 18 million tonnes through October 10.

Q2: How can a power interruption affect an induction steel furnace?

A sudden loss of electricity can cause molten metal to solidify before processing is complete. Depending on the circumstances, restarting operations may require additional energy, create production delays and increase the risk of damage to furnace linings.

Q3: Why did Coal India's e-auction premium rise in September?

Coal India's average e-auction premium increased to 94% over notified prices in September, from 59% in August. The higher premium reflects stronger bidding competition for auctioned coal, although the cost impact varies by buyer, supplier and procurement arrangement.