Around 74 coal-fired power plants in India are operating with critically low fuel inventories due to high electricity demand and monsoon-driven logistics bottlenecks. Investors should note that increased reliance on costlier coal imports to maintain generation could pressure profit margins for power companies.
Nearly 40% of India’s coal-fired power plants are currently reporting critically low fuel inventories, a situation that has tightened significantly over the past week. By September 19, the number of plants with less than 25% of their required coal stock, or enough fuel for fewer than three days of operation, climbed to 74 from roughly 60. This development places a substantial portion of the country's coal-based generation capacity under stress, particularly as national electricity consumption remains high.
Peak power demand has recently hovered between 230 GW and 250 GW, maintaining pressure on the grid after hitting a record of 270.70 GW in May. While the demand for electricity is steady, the primary difficulty lies in the logistics of moving fuel. Erratic monsoon rainfall has hindered the transportation of coal, leading to delays in replenishing stocks at various power stations. Both the coal and railway ministries have stepped in to improve coal movement, recognizing that weather-related disruptions are currently the main bottleneck in the supply chain.
For power generating companies, this fuel scarcity poses a clear financial risk. When domestic supply chains cannot keep up with high consumption, utilities are often forced to turn to the international market. Power-sector coal imports reached a 15-month high of 5.52 million tonnes in August. While bringing in imported coal helps ensure the grid remains powered, it is significantly more expensive than domestic fuel. Increased reliance on these imports can lower profit margins for power producers if the higher input costs cannot be fully passed on through power purchase agreements or tariff adjustments.
Sector analysts, including those from Crisil, suggest that this inventory decline is likely a temporary logistical hurdle rather than a long-term shortage of coal production. This distinction is crucial, as it implies that the situation could improve once monsoon-related transport issues are resolved. However, until logistics normalize, companies with higher exposure to imported coal may face higher operating costs.
Although renewable power generation, such as wind and solar, grew by about 21% between April and August, it remains intermittent. Coal plants still provide the essential base-load and peak-demand support required to keep the grid stable, especially when hydropower output is low. Going forward, investors should monitor the speed of logistical recovery, the volume of coal imports, and whether power companies can manage the cost burden, as these factors will influence the sector's financial performance in the near term.