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India's coal fleet is shifting from baseload to flexible balancing to integrate rising solar and wind energy. By FY 2031–32, coal plants will need to operate closer to their technical minimums, with a projected average plant load factor (PLF) drop from 69% to 55%. This transition will disproportionately impact high-cost, less efficient units, suggesting that the 35 GW of coal capacity currently under construction is sufficient for supply security without further additions.

The report argues that as India expands solar and wind capacity, coal's role will shift from baseload provider to a flexible balancing resource, leading to lower plant load factors (PLFs) and higher effective costs. By FY 2031-32, coal-based electricity is projected to be roughly 25% costlier than in FY 2024-25. The analysis suggests that the ~35 GW of coal capacity currently under construction is sufficient for reliability, making further coal expansion uneconomical compared to firm and dispatchable renewable energy (FDRE) and storage options.