India's stranded renewable power capacity, encompassing projects awarded but unable to commence operations, has surged to over 50 gigawatts (GW) in the past nine months, primarily due to unfinished transmission lines and protracted legal and regulatory delays. This significant increase, detailed in letters from the India's Sustainable Projects Developers Association (SPDA) to the Ministry of New and Renewable Energy, underscores a growing bottleneck in the nation's aggressive clean energy transition.

The SPDA's June 27 letter highlighted that projects lacking firm power purchase agreements (PPAs) with buyers have more than doubled from over 20 GW reported in October, indicating a rapid deterioration of the situation. This 50 GW of stranded solar and wind capacity now represents approximately a quarter of India's current installed renewable capacity of 184.6 GW. Major developers, including JSW, NTPC, Adani Green, ACME Solar, Renew, and Sembcorp, are among those with projects cumulatively worth billions of dollars affected by these delays.

"Energy transition is not just about building solar and wind capacity, it is also about ensuring that clean power reaches in a most optimum cost and timely manner," the SPDA emphasized in its communication to the ministry. A spokesperson for India's power ministry acknowledged that approximately 44 GW of renewable projects, primarily from federal tenders, currently lack supply agreements, though they did not elaborate on the specific scale of the increase or the duration of delays.

The primary impediment, according to the SPDA's June letter, is the slow progress in developing critical interstate transmission infrastructure, particularly in high-potential solar states like Rajasthan and Gujarat. These delays have forced numerous solar plants to miss their commissioning deadlines. The power ministry spokesperson noted that efforts are underway to fast-track these lines, including increasing compensation for landowners to facilitate construction. Of the 230 GW of renewable energy projects slated for connection via interstate transmission lines, 20% are complete, 70% are under construction, and the remainder are in the bidding phase, though a specific completion timeline was not provided.

Beyond transmission, the SPDA also cited prolonged legal disputes over land acquisition and environmental permissions as significant hurdles, leading several developers to pause operations. These systemic issues pose a substantial risk to India's ambitious target of more than doubling its non-fossil fuel power capacity to 500 GW by 2030, threatening to undermine the economic viability and timely execution of crucial renewable energy projects.