The Indian government is discussing a rule requiring thermal power plants to blend 5% imported coal to address falling fuel inventories. This comes as power demand remains high and domestic coal stocks have dropped by nearly 49% in the current quarter. For investors, this creates potential margin pressure on power producers and financial risk for debt-heavy state power distribution companies.
Thermal power plants in India may soon be required to blend up to 5% imported coal with domestic supplies. This potential mandate is under debate as the government looks for ways to manage the rapid depletion of coal stocks at power stations. This policy change would mark a significant shift, as the government has worked for the past two years to reduce the country’s reliance on overseas coal.
The urgent discussion stems from a sharp decline in available fuel. Coal inventories at power plants dropped by nearly 49% in the quarter ending in September, far exceeding the 26% decline seen during the same period last year. With nearly 40% of the country's coal-fired plants currently holding less than three days of fuel reserves, the situation requires immediate attention to avoid power outages.
Several factors have combined to create this supply pressure. A weak monsoon pattern has reduced the generation of electricity from hydropower, forcing coal-fired plants to generate more power than usual to meet the sustained high demand. Simultaneously, heavy rainfall in eastern coal-mining regions has hindered extraction efforts, and existing rail infrastructure has struggled to move enough fuel to the plants. While renewable energy generation has increased by about 21% year-on-year, it is currently not sufficient to meet all round-the-clock requirements.
For investors, the financial impact of this potential mandate is a key concern. Global coal prices from major suppliers have risen by double digits since May. If power producers are forced to import more coal, their fuel costs will increase. This creates a difficult situation for state power distribution companies, or DISCOMs, which are often burdened with high debt. If these companies cannot pass on the increased fuel costs to consumers through higher tariffs, their financial health could face further pressure.
Spot power prices have already climbed to an average of 7.71 rupees per unit this month, reaching levels not seen since 2022. This indicates that supply constraints are already influencing the market. Going forward, investors should watch for official government notifications regarding the blending mandate. The key monitorable will be how this impacts the operating margins of power producers and whether regulators provide mechanisms to offset the higher cost of imported fuel.