India has made remarkable strides in expanding its renewable energy sector, achieving a significant decarbonisation milestone ahead of schedule. However, severe infrastructural bottlenecks are threatening to undermine this progress, as a substantial amount of clean power is wasted due to inadequate transmission networks.

Data from energy sector experts highlights that non-fossil energy sources now account for 300 gigawatts, representing over half of the country's total 552 gigawatts of installed generation capacity. This target was reached five years ahead of the original timeline. During a hot afternoon in July, power generated from solar, wind, hydro, and nuclear sources briefly supplied more than half of the nation's peak electricity demand.

Industry leaders note that this achievement illustrates how green energy has evolved from a minor component into a central pillar of the national power network. While coal-fired power stations continue to supply the majority of electricity over the course of a day due to higher operational hours, the rapid expansion of renewable infrastructure marks a major turning point for a country historically dependent on fossil fuels.

Despite these impressive generation figures, the country faces a critical hurdle in moving the electricity from where it is produced to where it is needed. Transmission infrastructure has failed to keep pace with the aggressive deployment of new green energy projects. Industry analysts report that transmission limitations were responsible for nearly two-thirds of all clean energy curtailment during the first quarter of the year, resulting in hundreds of gigawatt-hours of wasted power.

Experts point to a stark difference in timelines between the two sectors. While a solar or wind installation can be built in under two years, developing high-voltage transmission lines often takes much longer. These projects frequently encounter obstacles involving land acquisition, permitting, regulatory approvals, and coordination across multiple government bodies.

Furthermore, the geographical concentration of new green projects in northwestern regions like Gujarat and Rajasthan has exacerbated the difficulty of evacuating power through a strained grid. Analysts warn that this widening gap between swift generation growth and sluggish infrastructure development poses the single greatest operational threat to the nation's ambitious clean energy targets for the end of the decade.

Integrating battery storage systems at collection points could have alleviated the shortfall by capturing excess electricity for evening use instead of letting it go to waste. Yet, the expansion of storage capacity has stalled. Surrounding economic pressures, including rising material costs, global supply disruptions, and currency fluctuations, have increased financing expenses and caused multiple planned storage initiatives to collapse.

Addressing these logistical and financial hurdles remains essential if the nation hopes to sustain its green transition. Policymakers and industry stakeholders face mounting pressure to accelerate grid upgrades and resolve planning inefficiencies to ensure that future renewable generation is fully utilized rather than lost to transmission constraints.

Reporting based on coverage first published by BBC News. Read the original report at BBC News.