New Delhi, Sept. 2 -- India's renewable energy transition has reached an unusual contradiction. The country is adding solar capacity at remarkable speed even as significant quantities of clean electricity cannot be fully utilised. Nearly 11 terawatt-hours of solar generation was reportedly curtailed over the past 15 months as transmission constraints, inadequate storage and limited grid flexibility prevented available electricity from reaching consumers. This is particularly striking for an economy where power demand continues to rise rapidly. The problem exposes an important weakness in the way the energy transition has been measured. Installed capacity is an impressive headline number, but panels alone cannot deliver an energy transformation. Electricity must be transmitted, balanced and available when consumers need it. India has built the generation engine; the infrastructure surrounding that engine must now catch up.
Solar electricity presents an inherent challenge because generation rises sharply during daylight hours and disappears after sunset, while demand follows a different curve. Storage can bridge this gap by absorbing electricity when supply exceeds immediate requirements and releasing it later. Yet India currently has only around 3 GW of battery storage against requirements projected to reach roughly 74 GW by 2032. Transmission poses another constraint. Much renewable capacity is located in resource-rich regions, while major consumption centres may be hundreds of kilometres away. New solar projects can also be completed faster than transmission networks required to evacuate their electricity. Unless storage facilities, interstate transmission corridors and grid-management systems expand alongside generation, curtailment could become a recurring feature rather than an occasional technical necessity.
The consequences extend beyond wasted electricity. Renewable projects depend on predictable revenues, and frequent curtailment can weaken their economics by leaving developers with generating assets that cannot consistently sell their output. Over time, that uncertainty can affect financing costs and investor confidence precisely when India requires enormous private investment to achieve its clean-energy ambitions. Recent efforts to strengthen Green Energy Corridors and encourage batteries alongside renewable projects therefore deserve urgency. Electricity markets can also become more flexible, rewarding consumers who shift some demand towards periods of abundant solar generation. Industries capable of scheduling energy-intensive operations during daylight hours could help absorb surplus electricity. Conventional plants, meanwhile, must become more responsive so generation can adjust efficiently as renewable supply fluctuates.
India's next phase of renewable development must consequently move beyond the race to install ever more capacity. Generation, transmission and storage need to be planned as parts of one electricity system rather than separate infrastructure exercises. Battery storage, pumped hydro, stronger transmission networks, better forecasting and more responsive electricity markets are no longer supporting components of the green transition; they are central to its success. Some renewable curtailment will remain unavoidable, particularly as variable energy becomes a larger part of the power mix. But routinely wasting usable clean electricity because infrastructure has fallen behind would represent a failure of planning. India has already demonstrated its ability to build solar power at extraordinary scale. The harder task now is ensuring that sunshine converted into electricity does not remain stranded.
Published by HT Digital Content Services with permission from Millennium Post.