India’s reliance on coal-fired power surged to 64.86% in September 2026 as hydro and renewable energy generation dropped. With power plant coal stocks falling to just 36% of required levels, energy companies face urgent supply chain pressures. This shift highlights the current volatility in non-thermal power sources and the critical importance of coal logistics for maintaining grid stability.
Thermal power plants are bearing the load as India’s energy sector navigates a sharp decline in clean energy generation. In September 2026, coal-based electricity accounted for 64.86% of the national power mix, a noticeable increase from 63.17% in August. This reliance grew because non-thermal energy sources—specifically hydro and renewable power—could not maintain the necessary output to meet peak energy demand, which recently spiked to 45-50 GW.
Hydroelectric power generation dropped nearly 20% on a year-on-year basis, and renewable energy generation saw a monthly decline of roughly 16%. For investors, this volatility underscores the current challenge of maintaining a stable power supply without relying heavily on thermal plants. When clean energy output fluctuates due to weather patterns, the burden shifts entirely to coal, impacting both the inventory levels at power plants and the operational demands on thermal energy companies.
A key concern for the sector is the thinning buffer of coal stocks. By the end of September, coal inventories at power plants stood at 21 million tonnes, which is only 36% of the required normative level. The operational strain is visible in the number of power plants reporting critical shortages. Facilities with coal stocks below 25% of the norm jumped from 32 in late August to 85 in early October. This situation puts immediate pressure on the supply chain to ensure that power generation does not face interruptions.
To manage the fuel shortage, the government has ramped up logistics. Daily coal rake loadings, a critical metric for supply chain efficiency, increased from an average of 280 in August to 426 in September. In the first ten days of October, this average rose further to 469. For companies involved in coal logistics and power generation, the efficiency of this distribution network is the primary factor determining operational success in the near term. Investors in the power and coal sectors may continue to track these logistics data points, as they directly influence the ability of thermal plants to maintain high capacity utilization rates amidst inconsistent contributions from the renewable sector.