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Power Grid Secures 400kV Krishnagiri REZ Phase-I Project To Bolster Transmission Capacity

POWERGRID wins a significant transmission project in Tamil Nadu via TBCB, focusing on renewable energy evacuation through a 400/230kV GIS substation infrastructure.

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Sahi Markets
Published: 10 Jul 2026, 06:58 PM IST (15 minutes ago)
Last Updated: 10 Jul 2026, 06:58 PM IST (15 minutes ago)
2 min read
Reviewed by Arpit Seth

Market snapshot: Power Grid Corporation of India (POWERGRID) has emerged as the successful bidder for the establishment of the transmission system for 'Krishnagiri REZ Phase-I' in Tamil Nadu. The project, secured through the Tariff Based Competitive Bidding (TBCB) process, reinforces POWERGRID's leadership in the Inter-State Transmission System (ISTS) space. This development comes as India accelerates its renewable energy evacuation infrastructure to meet the 500 GW non-fossil fuel capacity target by 2030.

Data Snapshot

  • Project Model: Tariff Based Competitive Bidding (TBCB)
  • Technical Scope: 400/230kV GIS Substation at Krishnagiri
  • Regional Focus: Tamil Nadu Renewable Energy Zone (REZ)
  • Sector Dominance: ~85% of ISTS market share

What's Changed

  • Shift from regulated return projects to competitive bidding wins, proving cost efficiency.
  • Increased footprint in the Southern Region renewable energy corridor.
  • Transition towards Gas Insulated Substations (GIS) to minimize land usage in high-density areas.

Key Takeaways

  • Strategic win in the renewable energy evacuation segment.
  • Validation of competitive pricing capabilities in TBCB tenders.
  • Strengthens long-term revenue visibility via 35-year transmission service agreements.

SAHI Perspective

POWERGRID’s success in the TBCB arena is a critical indicator of its operational agility. While traditional projects offered a guaranteed 15.5% ROE, TBCB wins demonstrate that the company can maintain healthy margins even under competitive pressure. The focus on Krishnagiri REZ highlights the systemic shift toward decentralized green energy hubs, where POWERGRID acts as the primary infrastructure backbone.

Market Implications

The win signals continued capital expenditure in the power utility sector. Institutional investors typically view TBCB wins as growth drivers that offset the plateauing of older regulated assets. Sectorally, this benefits EPC contractors and equipment manufacturers like BHEL or ABB Power Products, who likely support the GIS infrastructure rollout.

Trading Signals

Market Bias: Bullish

Consistent project wins under TBCB and a dividend yield exceeding 4% provide a defensive yet growth-oriented profile for the stock.

Overweight: Power Transmission, Renewable Energy Infrastructure

Underweight: Thermal Power Generation

Trigger Factors:

  • Quarterly execution pace of TBCB projects
  • Monthly ISTS capacity addition data from CEA
  • Regulatory updates on ROE for regulated assets

Time Horizon: Medium-term (3-12 months)

Industry Context

The Indian transmission sector is witnessing a massive overhaul as the country integrates large-scale solar and wind capacities. The REZ (Renewable Energy Zone) framework is designed to provide advance transmission connectivity to green energy developers, reducing the gestation period for power plants.

Key Risks to Watch

  • Right of Way (RoW) challenges in Tamil Nadu leading to execution delays.
  • Fluctuations in commodity prices affecting GIS equipment costs.
  • Aggressive bidding by private players like Adani Energy Solutions or Sterlite Power.

Recent Developments

In the last 60 days, POWERGRID reported a steady 4% growth in consolidated net profit for the previous fiscal. The company also announced plans to raise up to ₹5,000 Cr via private placement of bonds to fund its ongoing capex cycle, which includes several ISTS projects in Rajasthan and Gujarat.

Closing Insight

As India pivots to green energy, infrastructure becomes the ultimate bottleneck. POWERGRID’s ability to secure large-scale REZ projects ensures its relevance in a decarbonizing economy while maintaining the financial discipline required for the TBCB era.

FAQs

What is the significance of the TBCB model for Power Grid?

Under TBCB, projects are awarded to the bidder offering the lowest annual tariff. This shifts the risk from the consumer to the developer but allows efficient players like POWERGRID to leverage their scale to win projects competitively.

How does the Krishnagiri REZ project impact the renewable energy sector?

This project acts as a second-order enabler; by providing a 400kV substation capacity, it allows approximately 1-2 GW of solar and wind power plants in the Krishnagiri region to connect to the national grid.

High Performance Trading with SAHI.

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