India's thermal coal stock reaches 51,982.7 TT on May 18 — 24 days cover; 22 plants flagged critical
India’s monitored coal-based power plants held aggregate coal stock of 51,982.7 thousand tonnes on May 18, 2026.
The data was reported by the Central Electricity Authority.
The stock covered 190 monitored coal-based plants.
The monitored fleet capacity stood at 222,698 MW.
The aggregate stock was about 69% of the normative requirement.
The normative coal stock requirement stood at 75,271.4 thousand tonnes.
This corresponds to 24 days of cover.
The actual stock of 51,982.7 thousand tonnes also translated to around 24 days at the reported operating basis.
However, the headline number hides stress at specific plants.
CEA flagged 22 plants as critical.
Coal stock is a key fuel-security indicator for India’s power sector.
Coal remains the backbone of India’s thermal generation.
Adequate stock is essential during high-demand summer periods.
Low stock at individual stations can create generation risk.
This can force utilities to buy costlier power from short-term markets.
Daily coal requirement across the monitored fleet was 3,096.9 thousand tonnes.
This shows the scale of coal consumption needed to maintain generation.
Coal supply, railway logistics, plant-level unloading capacity, and mine dispatch coordination are all critical.
Any disruption can quickly reduce buffers at stressed stations.
The 22 critical plants require close monitoring.
A plant is flagged critical when its stock falls below prescribed threshold levels.
These plants may face generation constraints if replenishment does not improve.
The critical list includes domestic coal, imported coal, and washery-reject-based stations.
The import-based coal fleet showed greater stress.
Import-coal-based plants totaling 18,783 MW held only 2,664.4 thousand tonnes of stock.
The normative requirement for these plants was 5,086.6 thousand tonnes.
This means imported coal plants held only 52% of normative stock.
Imported coal plants depend on global supply chains.
They are exposed to shipping schedules, port logistics, international prices, and foreign exchange movements.
This makes stock rebuilding more complex than for domestic coal plants.
A low imported coal buffer can become a risk during peak demand periods.
Consumers may be affected if coal shortages force generation backdown.
When thermal plants reduce output, DISCOMs may need to buy more expensive power from exchanges.
This can increase procurement cost.
Over time, such costs can flow into tariffs or regulatory claims.
Role of Coal India and Railways
Coal India and Indian Railways are central to restoring plant-level coal buffers.
Mine production must be matched with rake availability.
Coal movement must prioritise stressed plants.
Coordination between generators, coal companies, railways, and system operators becomes especially important during summer demand peaks.
CEA’s May 18 coal stock data shows that India had a sizeable aggregate coal buffer but plant-level stress remained visible.
The national stock stood at 51,982.7 thousand tonnes.
The monitored fleet had around 24 days of cover.
But 22 plants were critical and imported coal plants were at only 52% of normative stock.
The key watchpoints are replenishment at critical plants, imported coal arrivals, railway rake availability, summer demand growth, and whether thermal stations can sustain high availability.
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