Beyond the Grid: Decoding POWERGRID’s Strategic Pivot and the 5 GW Green Hydrogen Highway in Visakhapatnam 

Beyond the Grid: Decoding POWERGRID’s Strategic Pivot and the 5 GW Green Hydrogen Highway in Visakhapatnam 

In the intricate chess game of India’s energy transition, the movement of pieces is rarely as straightforward as they appear. On March 19, 2026, Power Grid Corporation of India (POWERGRID) made a move that signals a significant maturation of the country’s green hydrogen ambitions. By launching two tenders for a massive 5 GW Interstate Transmission System (ISTS) project in Visakhapatnam, the state-owned transmission behemoth is not merely laying down wires; it is constructing the economic backbone for what could become one of the world’s largest green industrial clusters. 

At first glance, the headlines point to a standard infrastructure rollout: transmission lines to evacuate power. However, a closer examination reveals a complex, multi-layered financial and operational structure that underscores the shifting risks and responsibilities in India’s renewable energy sector. This is not just a story about steel towers and megavolt lines; it is a story about how India is de-risking its green hydrogen future by leveraging the balance sheet of its central transmission utility. 

The Anatomy of a Two-Step Tender 

To understand the significance of POWERGRID’s current solicitation, one must first understand the unusual procurement structure. The project originates from REC Power Development Consultancy Ltd. (RECPDCL), a subsidiary of the state-owned REC Limited, which floated the upstream tender for the evacuation of power from green hydrogen and green ammonia manufacturing facilities in the Visakhapatnam region. 

Typically, in Indian transmission, the central agency (RECPDCL) identifies the project, conducts the bidding, and awards it to a developer. However, in this case, POWERGRID is acting preemptively. It has launched its own tenders contingent upon winning the upstream RECPDCL bid. 

This is a strategic pre-bid tie-up. POWERGRID is essentially saying to the market: “We intend to win the main project. To do that, we need partners to share the execution risk and capital expenditure on specific segments.” By splitting the monolithic RECPDCL project into smaller, more digestible chunks, POWERGRID is spreading the execution risk while retaining the prime contractor status. 

This structure is a departure from the traditional Engineering, Procurement, and Construction (EPC) model. Instead, POWERGRID is seeking partners under a Build-Own-Operate-Transfer (BOOT) model for specific segments, with a stringent 27-month completion deadline. This implies that the partners will finance, construct, and operate their specific portions for a concession period before transferring ownership—presumably back to POWERGRID or the central government entity—at the end of the term. 

Unpacking the Technical Corridors 

The two tenders cover distinct but interconnected segments of the transmission network, highlighting the complexity of integrating large-scale renewable energy into the grid. 

Tender One: The Pendurthi Hub The first tender focuses on the Pendurthi region, involving the construction of the Pendurthi–Srikakulam 765 kV HVDC transmission line. The inclusion of 330 MVAr switchable line reactors is a critical detail often overlooked in mainstream reporting. These reactors are essential for managing the Ferranti effect—a phenomenon where long, high-voltage transmission lines generate excess reactive power when lightly loaded. Given that green hydrogen plants will likely operate with variable loads depending on electrolyzer scheduling, these reactors will be crucial for maintaining voltage stability across the corridor. 

Furthermore, this tender includes the Line-In-Line-Out (LILO) of the existing Kalpakka–Maradam 400 kV HVDC line at Pendurthi. LILO is a sophisticated engineering maneuver that involves tapping into an existing live transmission line to create a new substation or interconnection point without constructing an entirely new line from scratch. This indicates that Pendurthi is being transformed from a peripheral node into a central nerve center for the region’s green energy flow. 

Tender Two: The Khammam Connection The second tender is arguably more ambitious, covering the establishment of the Khammam-II – Warangal New 765 kV HVDC line. This segment creates a high-capacity backbone linking the newly developed Khammam-II substation to Warangal. The inclusion of the Khammam-II – Pendurthi 765 kV DC line creates a direct high-capacity artery between the two major hubs, effectively creating a dedicated green energy corridor. 

The Khammam-II – Khammam 400 kV (quad) DC line rounds out this tender. The use of “quad” conductors (four conductors per phase) signifies a massive current-carrying capacity, designed to handle the immense power flow from the 5 GW cluster. Collectively, these lines are not merely about connecting point A to point B; they are about creating a redundant, high-capacity mesh network capable of surviving contingencies (such as a line fault) without collapsing the power supply to the electrolyzers. 

The 27-Month Crucible and the BOOT Structure 

Perhaps the most commercially sensitive aspect of the tender is the 27-month completion timeline. For a project of this magnitude—involving 765 kV HVDC infrastructure, switchable reactors, and LILO work on live lines—27 months is an aggressive schedule. It reflects the urgency behind India’s National Green Hydrogen Mission, which targets 5 million metric tons (MMT) of green hydrogen production capacity by 2030. Delays in transmission infrastructure are the single biggest bottleneck for green hydrogen projects globally; POWERGRID’s timeline signals a determination to ensure the transmission is ready before the production facilities come online. 

The BOOT (Build-Own-Operate-Transfer) model is equally significant. For the selected partners, this represents a high-stakes venture. They will be responsible for the capital expenditure (CapEx) and operational expenditure (OpEx) during the concession period. Their revenue will likely come from a predetermined annuity or tariff approved by the Central Electricity Regulatory Commission (CERC). For POWERGRID, this model preserves its balance sheet capacity while allowing it to leverage the agility of specialized infrastructure firms or large engineering contractors. 

A Crucial Restriction: The Anti-Participation Clause 

One of the most fascinating clauses in the tender documentation is the explicit prohibition: “Bidders must not participate on RECPDCL’s tender.” 

At first, this seems counterintuitive. Why would POWERGRID exclude the very partners it is trying to attract from bidding on the main project? 

The answer lies in conflict of interest and risk mitigation. If a firm were to bid on the main RECPDCL tender (as a direct competitor to POWERGRID) while also bidding to be POWERGRID’s partner, it would create a scenario where the partner has a foot in both camps. They would possess inside knowledge of POWERGRID’s cost structures for the sub-segments, which they could use to undercut POWERGRID in the primary bid. 

By enforcing this separation, POWERGRID is ensuring that its partners are fully aligned with its own bid for the primary contract. It forces a “team” structure: potential partners must choose to either compete against POWERGRID for the main contract or collaborate with POWERGRID as a sub-developer. This is a classic strategy to consolidate a strong, unified bidding consortium to win the primary contract against other competitors like Adani Transmission, Sterlite Power, or private equity-backed infrastructure trusts (InvITs). 

Strategic Implications for India’s Green Hydrogen Ecosystem 

Looking beyond the technical and commercial minutiae, this development signals three broader trends: 

1. The Emergence of “Green Hydrogen Hubs”Visakhapatnam is being positioned not just as a manufacturing zone but as an integrated energy hub. The 5 GW capacity is likely intended to serve a cluster of electrolyzer manufacturers and green ammonia exporters. The development of dedicated ISTS lines separates the power supply for these industries from the congested general grid, ensuring high reliability (which is critical for the continuous operation of electrolyzers) without burdening the distribution network.
2. POWERGRID’s Evolution into a Project DeveloperTraditionally, POWERGRID acted as the operator and developer of national transmission infrastructure based on central planning. Here, we see POWERGRID acting as an aggressive bidder in a competitive tariff-based bidding process (via RECPDCL). By utilizing pre-bid tie-ups and BOOT structures, POWERGRID is modernizing its approach, using its sovereign credit rating and technical expertise to win projects, while offloading execution and operational risks to private partners.
3. The HVDC RenaissanceAll the major lines in this project are specified as HVDC (High Voltage Direct Current). While HVAC (Alternating Current) is standard for local distribution, HVDC is the superior technology for moving massive amounts of power over long distances with lower losses. It also offers the unique advantage of asynchronous interconnection—allowing the green hydrogen cluster to operate as a “virtual power plant” that can be decoupled from the main grid’s frequency fluctuations. This suggests that the National Green Hydrogen Mission is driving a parallel demand for advanced HVDC infrastructure, a niche where Indian transmission engineering is rapidly gaining global expertise.

The Road Ahead 

As the tender closes on March 30, 2026, the market will be watching closely to see which infrastructure players throw their hats into the ring. The 27-month timeline means that if the primary contract is awarded by mid-2026, the transmission lines must be operational by late 2028—a timeline that aligns perfectly with the commissioning targets of green hydrogen plants currently in the pipeline. 

For the successful bidders, this represents a multi-billion-rupee opportunity. However, it also comes with the risks associated with HVDC technology, land acquisition challenges (a perennial issue in Indian infrastructure), and the logistical complexities of working on live high-voltage lines. 

In conclusion, POWERGRID’s latest tender is far more than a routine infrastructure notification. It is a meticulously crafted financial and engineering instrument designed to accelerate India’s green hydrogen future. By stitching together strategic partnerships, leveraging BOOT models, and insisting on HVDC technology, POWERGRID is demonstrating that the success of the green transition in India will not just be determined by how much renewable energy is generated, but by the sophistication and resilience of the grid built to carry it. The wires going up in Visakhapatnam are, in a very real sense, the lifelines of India’s energy independence ambitions.