India: Coal stocks at thermal power plants drop 5.31 mnt in Apr'26 as demand outpaces supply

• Total coal consumption at 76.96 mnt vs receipts of 71.74 mnt
  
  
• South Indian utilities operating at 20-50% of normative stock levels
  
  

India's thermal power sector saw a sharp tightening in April 2026, with coal stocks at power plants falling by 5.31 million tonnes (mnt) over the month, despite robust supply flows. The decline reflects a widening gap between coal receipts and consumption as electricity demand picked up ahead of peak summer, according to Central Electricity Authority (CEA) data.

Key data points and stock position

Consumption exceeded supply by over 5 mnt, leading to a steady drawdown in stocks through the month. The decline was gradual, not abrupt, indicating controlled tightening rather than a supply shock.

In April, coal consumption outpaced receipts across both domestic and imported sources, leading to an overall drawdown in stocks. Domestic coal receipts stood at 68.38 mnt against consumption of 72.38 mnt, resulting in a stock decline of 4.32 mnt. Similarly, imported coal receipts were 3.35 mnt versus consumption of 4.58 mnt, leading to a reduction of 0.98 mnt. Overall, total coal receipts of 71.74 mnt lagged behind consumption of 76.96 mnt, causing a net stock depletion of 5.31 mnt during the month.

 

Demand-supply drivers behind stock drawdown

Consumption outpaces supply as summer demand picks up

Coal receipts remained robust at 71.74 mnt in April. However, consumption surged to 76.96 mnt, creating a supply-demand gap of 5.22 mnt. This gap was filled by drawing down inventories, resulting in the 5.31 mnt net stock decline.

The drawdown was gradual through the month, not a sudden crash, indicating that the system managed the tighter balance without immediate crisis. However, the reduced buffer leaves little room for error as peak summer demand approaches.

Domestic coal drives system dynamics

Domestic coal accounted for 95.3% of receipts (68.38 mnt of 71.74 mnt) and 94.0% of consumption (72.38 mnt of 76.96 mnt). The stock decline from domestic coal was 4.32 mnt, or 81% of the total drawdown.

Imported coal volumes remained marginal at 3.35 mnt receipts and 4.58 mnt consumption. Despite a small stock drawdown of 0.98 mnt, imports were insufficient to meaningfully offset domestic supply pressure. This underscores India's continued reliance on domestic coal as the primary thermal fuel source.

Critical plant count stable, but stress building

The number of plants operating with critical coal stock levels (below 25% of normative requirement) remained largely stable throughout April, declining from 24 plants on 1 April to a monthly low of 17, before rising slightly to 23 plants by 30 April.

However, this headline stability masks deeper stress. Many plants moved from comfortable levels (above 100% of normative) to sub-normative ranges of 50-80%, particularly in the second half of April. Stress is accumulating without yet triggering widespread critical classification, suggesting a gradual tightening rather than an acute shock.

The core of April's story

Stock trends diverged sharply across regions, revealing a widening imbalance driven by logistics constraints rather than coal availability.

Pithead regions (eastern and central India, near coalfields) remained comfortable with stocks at 120-130% of normative levels. Plants in Jharkhand, Chhattisgarh, Odisha, and Madhya Pradesh faced minimal supply pressure.

North India showed mixed performance. Haryana and Punjab remained comfortable (145% and 130% respectively), though both showed declining trends. Rajasthan, however, emerged as a stress zone with stocks at 50-70% of normative levels, driven by its distance from coalfields and reliance on rail movement.

Uttar Pradesh presented a striking intra-state divergence. Pithead plants remained comfortable at ~120% of normative levels. But rail-fed plants in the state depleted to 50-75% of normative levels, highlighting how logistics constraints can bifurcate performance even within the same state.

South India was the most stressed region. Overall stocks ranged from 20-50% of normative levels, with multiple utilities operating well below minimum required levels.

Plant-level data from the southern region confirmed extreme stress:

• Damodaram Sanjeevaiah (Andhra Pradesh): ~23% of normative
  
  
• North Chennai Stage 3 (Tamil Nadu): ~20% of normative
  
  
• Kothagudem New (Telangana): ~19% of normative
  
  
• Yadadri (Telangana): ~22% of normative
  
  

This reflects a structural dependence on long-distance coal movement into the southern grid. The region has limited local coal production and relies almost entirely on rail transport from eastern coalfields.

Logistics, not production, the main bottleneck

The stark divergence between pithead plants (stable) and non-pithead plants (depleting) confirms a key finding: coal production and dispatch from mines are strong. The constraint lies in transportation and distribution, not in absolute coal availability.

Pithead plants remained stable with comfortable inventories. Distant plants, particularly in South India and rail-fed clusters in north India, faced depletion despite the same level of mine output. This indicates a system increasingly dependent on efficient coal movement rather than absolute supply availability.

Second-half acceleration in stock decline

The stock drawdown was not uniform through the month. Available data suggests the decline accelerated in the second half of April as electricity demand picked up sharply ahead of peak summer. The period 16-30 April saw higher thermal generation and correspondingly faster coal consumption, widening the supply-demand gap.

Outlook

For power generators: Plants in south India and rail-fed locations face the highest operational risk. Without assured coal supply through dedicated rail corridors or washery linkages, these plants may need to reduce generation or seek imported coal at higher cost. Generators with pithead locations have a distinct competitive advantage in the current environment.

For discoms: The tightening coal supply signals potential for higher power purchase costs. If coal stocks deplete further, thermal generation may be constrained, pushing more demand to the IEX spot market where prices have already shown extreme volatility. Discoms in south India and Rajasthan should secure alternative supply arrangements.

For coal logistics (Railways, CIL subsidiaries): The data underscores that incremental gains in rail movement will have outsized impact on plant-level stress. Focused intervention on specific rail corridors particularly those feeding south India and Rajasthan - could stabilise stocks without requiring additional coal production.

With electricity demand expected to rise further in May and June:

• Stress will remain concentrated in south India and rail-fed regions
  
  
• Any disruption in coal logistics (e.g., monsoon-related rail delays, rakes shortage) could quickly push several plants into critical levels
  
  
• Incremental increases in coal movement will be required to stabilise stocks and prevent further drawdown
  
  
• The system remains stable but with reduced buffer; resilience depends on logistics efficiency, not coal availability