India targets 150 GW Of Power Evacuation In Phases 3& 4 of Green Energy Corridor

The government of India is planning for a huge expansion of its power evacuation network under Green Energy Corridor (GEC) Phases 3 and 4 to support the growing renewable sector. This comes at a time when grid constraints remain a major brake on India’s clean energy expansion, even as the earlier phases of GEC remain under implementation.

Flagship Energy Transmission Programme

To support large-scale integration of renewable energy into the national grid, the centre had introduced the GEC programme. An integrated national grid is a crucial component of the country’s non-fossil power capacity ambition for 2030 and beyond.

Phases 1 and 2

Under GEC Phase 1, India has commissioned the integration of approximately 20 GW of the evacuation network. With about 90-100 per cent of its transmission lines and substations commissioned across eight states, Phase 1 is nearly complete. The completion experienced a delay in reaching the initial 2022 target due to land acquisition hurdles, right-of-way clearances, equipment supply constraints and financing challenges. Phase 1 covers the states of Andhra Pradesh, Gujarat, Himachal Pradesh, Karnataka, Madhya Pradesh, Maharashtra, Rajasthan and Tamil Nadu.

The Phase 2 targets an additional 20 GW integration through new transmission lines (10,750 ckm) and substations (27,500 MVA), focusing on key states for grid stability by the 2026-27 financial year (FY27). This phase is expanded to include Kerala and Uttar Pradesh, while adding on to Gujarat, Himachal Pradesh, Karnataka, Rajasthan and Tamil Nadu.

Work for Phase 1 is expected to finish very soon, while Phase 2 is underway.

New Phases 3 and 4

With renewable capacity additions accelerating, the next phase is being designed at a much larger scale. The Union Minister for New and Renewable Energy, Pralhad Joshi, also provided an update on the government’s work toward the third phase of the Green Energy Corridor (GEC), in November 2025. With Phase 3 and Phase 4, the country is now targeting 150 GW of renewable energy evacuation network, eight to ten times larger than both earlier corridors, as per Down to Earth.

The new corridors are expected to be implemented in stages. The scale of Phases 3 and 4 implies a substantial budgetary requirement - as much as ten times higher than earlier phases - in the coming years, even as spending under earlier phases continues.

Notably, GEC-III was proposed in the Union budget for FY26, with an overall cost estimated at INR 56,000 crore and the Centre covering 40 per cent of it. 

The development of the new transmission infrastructure is expected under the interstate transmission system (ISTS).