GAIL’s Srikakulam–Angul Pipeline represents a strategic effort to re-engineer India’s energy map by linking eastern and western gas supply sources. At the same time, the project significantly enhances the National Gas Grid (NGG) by adding operational flexibility and strengthening energy security.
Part of GAIL’s Core National Gas Grid Expansion
The pipeline forms a critical component of GAIL’s broader push to expand and reinforce the NGG. Along with SAPL, other key pipeline projects include the Mumbai–Nagpur–Jharsuguda Pipeline (MNJPL) and the Gurdaspur–Jammu Pipeline. Together, these projects aim to improve gas availability across regions and support industrial, commercial, and household consumption.
High-Capacity Corridor Unlocks Industrial Potential
Through the 422-km-long pipeline, GAIL has created a high-capacity, bi-directional gas corridor passing through Andhra Pradesh and Odisha. The pipeline connects key commercial centres, enabling industries to shift to cleaner and more cost-effective fuel while unlocking new industrial potential along the route.
Dedicated to the Nation, Built at ₹2,800 Crore
Prime Minister Narendra Modi dedicated the project to the nation in October last year. Built at a cost of approximately ₹2,800 crore, the pipeline is expected to supply natural gas to around 1.5 million households, significantly boosting domestic gas access in eastern India.
Challenging Terrain Across Two States
The pipeline stretches from Srikakulam in Andhra Pradesh to Angul in Odisha, covering 124 km in Andhra Pradesh and 298 km in Odisha. In the process, it traverses seven districts, cutting across rugged terrain, dense forest patches, major rivers, and diverse ecological zones. The alignment spans coastal plains, agricultural lands, forest belts, rocky uplands, and large water bodies—each presenting unique engineering and environmental challenges.
Navigating Clearances and Regulatory Hurdles
To execute the project, GAIL secured 718 statutory permissions from multiple authorities, including forest, revenue, railways, NHAI, irrigation departments, district administrations, and local institutions. Continuous engagement, joint inspections, and real-time issue resolution helped maintain project momentum, even in environmentally sensitive zones.
Landmark Engineering Feats Along the Route
One of the most notable engineering achievements was the 3.8-km Horizontal Directional Drilling (HDD) beneath the Mahanadi River, completed in just 66 days. The feat stands as India’s second-longest HDD, showcasing advanced techniques such as electromagnetic steering, single-shot pipe pulling, and mud recycling systems. In addition, the project team adopted innovative construction practices to overcome terrain-specific challenges.
Energy Benefits for Industry, Mobility and Households
The project delivers wide-ranging benefits across sectors. Major industrial consumers such as Vedanta, NALCO, and Utkal Aluminium now have access to consistent, cleaner, and more affordable natural gas. Moreover, the pipeline strengthens city gas distribution (CGD) networks, supporting cleaner mobility and household fuel use across the region.
Setting Global Benchmarks in Pipeline Construction
As reported by thehindubusinessline.com, beyond connectivity, the project establishes methodological and technological benchmarks for multi-terrain pipeline projects worldwide. These include the intersection method for long-distance HDDs under river systems and monsoon-adaptive construction planning suited to subtropical conditions.
