India is on the cusp of a transformative investment in its energy infrastructure, with the Union government poised to approve a significant capital injection exceeding ₹50,000 crore for the third phase of its ambitious Green Energy Corridor (GEC) project. This massive financial commitment underscores the nation’s urgent drive to integrate its burgeoning renewable energy capacity, which has rapidly outpaced the existing transmission network, thereby creating critical bottlenecks that hinder its ambitious 2030 clean energy targets. The Ministry of New and Renewable Energy (MNRE) is set to present this crucial proposal for Cabinet approval, having already secured clearance from the Expenditure Finance Committee (EFC) and other prerequisite bodies, signaling an imminent push to resolve the country’s grid congestion crisis.
At the heart of this initiative is the imperative to strengthen intra-state transmission networks within India’s most resource-rich states for renewable energy. Regions such as Gujarat, Rajasthan, Karnataka, Maharashtra, and Andhra Pradesh, which are at the forefront of solar and wind power generation, are slated to be the primary beneficiaries. Gujarat and Rajasthan, in particular, are expected to host the majority of these new projects, reflecting their immense potential for large-scale renewable energy deployment. This targeted infrastructure development aims to alleviate the widespread curtailment of green power, ensuring that electricity generated from clean sources can efficiently reach consumers and contribute to a more stable and sustainable national grid.
The problem of renewable energy curtailment has emerged as a formidable challenge to India’s climate aspirations. Despite a commendable surge in solar and wind installations, the existing grid infrastructure often lacks the capacity to evacuate this power effectively. This mismatch forces grid operators to periodically reduce, or "curtail," renewable energy generation to maintain grid stability, leading to substantial economic losses and undermining the environmental benefits of these projects. Reports indicate that curtailment has been equivalent to approximately 18% of India’s average monthly solar generation, which stands at around 13 terawatt-hours (TWh). This translates into significant foregone revenue for developers and, ultimately, higher costs for the energy system as a whole, often necessitating compensation payouts for the unused generation capacity.
Industry stakeholders have vociferously highlighted that transmission, rather than generation capacity, is now the primary constraint impeding India’s energy transition. Mr. Sanjeev Aggarwal, founder and executive chairman of Hexa Climate, an I Squared Capital-backed entity, articulated this concern, noting, "We are already curtailing clean power as the grid simply cannot evacuate, and one in four inter-state schemes is running a year or more behind." He further emphasized that a ₹50,000 crore investment for GEC Phase III is "the right order of magnitude" but stressed the importance of proper structuring, suggesting a competitively-bid Public-Private Partnership (PPP) model with private developers assuming right-of-way risks and performance penalties. This, he argues, would instill the accountability that previous phases may have lacked, with timely commissioning ahead of the power plants themselves being critical.
Aditya Malpani, senior director and regional head of business development (West) at AMPIN Energy Transition, echoed this sentiment, describing the plan as "absolutely crucial" for maintaining the ‘must-run’ status of renewable energy projects. He asserted that an expanded, dedicated transmission corridor for RE projects would resolve curtailment issues for developers, thereby benefiting the entire grid and distribution companies (discoms). This strategic investment is not merely about adding lines but also about augmenting existing substations and transmission networks, creating a robust, resilient infrastructure capable of handling the intermittency and geographic dispersion inherent in renewable energy sources.
India’s Green Energy Corridor project was first conceptualized in 2015, designed to facilitate the evacuation of large-scale renewable power through both Inter-State Transmission System (ISTS) and Intra-State Transmission System (InSTS) components. This also included the establishment of RE management centers and advanced control infrastructure. The first phase successfully commissioned an intra-state transmission system for 24 GW of renewable energy, involving an investment of approximately ₹10,000 crore. The second phase, targeting the evacuation of around 20 GW, is currently under implementation with an estimated investment of ₹12,000 crore and is projected to conclude by the end of FY27. The upcoming third phase, at more than double the combined investment of the first two phases, signifies a substantial escalation in scale and ambition.
With India’s non-fossil power generation capacity recently surpassing 300 GW – accounting for roughly 54% of its ambitious target of 500 GW by 2030 – the urgency for grid enhancement is paramount. The parliamentary standing committee on energy, in its August report, affirmed that MNRE is working to launch GEC Phase III in FY27, aiming to evacuate an impressive 135 GW of renewable energy. This phase is envisioned as a PPP scheme, implemented through a tariff-based competitive bidding (TBCB) mode, a mechanism designed to enhance efficiency and attract private capital.
However, the path forward is not without its complexities. A May report by Ember, a green energy-focused think tank, highlighted that "transmission constraints accounted for nearly two-thirds of all renewable energy curtailment at 300 GWh" in the first quarter of 2026. This growing disparity between the rapid deployment of solar projects and the slower pace of transmission infrastructure development is now identified as the most critical operational risk to achieving India’s 500 GW non-fossil electricity target by 2030. Furthermore, this situation has led to anomalous market dynamics, where distribution companies (discoms) are sometimes compelled to sell renewable energy on electricity exchanges at prices lower than their procurement costs. In parallel, several states, including Uttar Pradesh, Bihar, Assam, and West Bengal, have continued to sign costly power purchase agreements (PPAs) for coal-fired power, overlooking the more affordable green alternatives due to grid limitations.
Over the past five years, India has consistently fallen short of its annual transmission targets, achieving only about 80% of its planned capacity additions. The government estimates a requirement of 61,411 circuit kilometers (ckm) of additional interstate transmission system (ISTS) capacity by FY30 to support the massive influx of renewable energy. The GEC Phase III, which is expected to cover 10,000 circuit km of new transmission network, as announced by MNRE minister Pralhad Joshi, represents a crucial step towards bridging this gap. This capacity expansion will not only facilitate the movement of power from generation hubs to consumption centers but also enhance grid stability and reliability.
Beyond the immediate financial outlay, the strategic implications of this investment are profound. A robust transmission network is fundamental to integrating intermittent renewable energy sources, optimizing their dispatch, and reducing the reliance on fossil fuels. It also paves the way for advanced grid technologies, such as smart grids, real-time monitoring, and energy storage solutions, which are essential for managing the dynamic nature of a high-renewable-penetration grid. The push for a PPP model and competitive bidding is expected to foster innovation, efficiency, and greater private sector participation, leveraging expertise and capital from both domestic and international investors. This proactive approach to grid modernization is critical for India not just to meet its domestic energy needs and climate pledges but also to solidify its position as a global leader in sustainable energy transition. The successful implementation of GEC Phase III will be a testament to India’s resolve in building a future powered by clean, reliable, and affordable energy.
