India is wasting solar power it spent billions building.
On Tuesday, Reuters reported that India delayed its coal flexibility plan by a full year — from April 2026 to April 2027. The plan would have required coal plants to cut output to 55% capacity during peak solar hours, making room for renewables on the grid. The holdup: nobody agreed on who pays for the retrofits.
That’s the headline. Here’s the part most coverage missed.
Solar Plants Are Already Being Shut Down
Forget April 2027. The problem the coal flexibility plan was supposed to fix is already here.
In Rajasthan — which, along with Gujarat, hosts 45% of India’s renewable capacity — nearly 4.3 GW of solar and wind has faced curtailment since March 2025. Not reduced. Shut down. Plants ordered to stop generating during peak sunshine because the grid physically cannot absorb the power. Crisil warned this month that 35 GW of renewable capacity across India faces the same risk.
The cause isn’t coal plants refusing to flex. It’s something far more basic.
The Missing Wires
India laid 5,077 circuit kilometres of transmission lines in the first nine months of FY2026. The target was 10,696 — a 47.5% achievement rate for infrastructure already under strain.
Here’s the number that captures India’s energy contradiction: non-fossil sources now make up 52.3% of installed capacity. Thermal power still generates roughly 70% of actual electricity. The panels exist. The wires to deliver their output don’t.
NTPC has warned that forcing coal plants into flexible operations could shorten unit lifespans. The one-year delay might be pragmatic. But every month the grid stays bottlenecked, solar investments worth ₹20,000 crore in Rajasthan alone sit idle — generating nothing while coal runs at full tilt.
India doesn’t have a coal flexibility problem. It has a transmission problem wearing a policy debate as disguise — and India’s broader energy security challenges only make the grid modernization more urgent. And until those missing thousands of kilometres of wire get built, the country will keep paying for solar panels that stare at the sun with nothing to do. India’s energy transition has multiple fronts — but none matter if the wires aren’t there.