Power Grid Corporation of India has been declared the successful bidder for the multi-state "WR-ER Inter-Regional Network Expansion Scheme Part-A" project under the competitive TBCB mechanism. Executed on a 35-year BOOT basis, the project includes constructing two new 765/400 kV substations and massive transmission corridors across Jharkhand, Chhattisgarh, Odisha, and West Bengal.
NEW DELHI — Strengthening India's power evacuation infrastructure, Power Grid Corporation of India Limited announced on July 9, 2026, its selection as the successful bidder for the massive Inter-State Transmission System (ISTS) project titled the “WR-ER Inter-Regional Network Expansion Scheme Part-A”.
The state-owned power transmission monopoly secured the strategic contract under the competitive Tariff-Based Competitive Bidding (TBCB) framework. The initiative is specifically engineered to expand bulk power transfer capabilities across India's Western Region (WR) and Eastern Region (ER) network interfaces, alleviating structural transmission constraints that historically disrupt inter-regional power corridors during peak demand seasons.
Technical Scope of the Inter-Regional Asset Buildout
The inter-state grid enhancement scheme requires the deployment of advanced power electronics and transformation systems across a multi-state footprint. According to project specifications, Power Grid will establish two brand-new 765/400 kV substations located strategically within the states of Jharkhand and Chhattisgarh. The inclusion of ultra-high-voltage 765 kV systems is standard for heavy industrial load lines, ensuring minimal thermal energy loss over long distances.
In tandem with the greenfield substations, the project scope mandates structural extensions at existing grid nodes situated in Chhattisgarh and West Bengal. To tie these regional nodes together, Power Grid will build expansive new circuits of 765 kV and 400 kV overhead transmission lines traversing directly through the states of Jharkhand, Chhattisgarh, and Odisha.
The contract will be executed on a Build, Own, Operate, and Transfer (BOOT) basis, with a regulated concession lifespan allowing the company to collect predetermined annual transmission charges before eventual transfer to the Central Transmission Utility (CTU) after 35 years.
Competitive TBCB Landscape and Operational Growth
The victory highlights Power Grid's sustained supremacy in navigating the Tariff-Based Competitive Bidding ecosystem. To secure the WR-ER contract, Power Grid outpaced intense private-sector opposition, with technical evaluations listing top infrastructure competitors including Adani Energy Solutions Limited and Dilip Buildcon Limited.
This project win adds momentum to a highly successful funding and bidding quarter for the public sector undertaking (PSU). In the weeks immediately preceding this award, Power Grid secured consecutive inter-state contracts, including a specialized green hydrogen and green ammonia grid integration system in Kakinada, Andhra Pradesh, and a ₹1,111 crore green energy evacuation line in Karnataka.
By successfully absorbing these asset-heavy contracts into its portfolio, the company continues to de-risk its capital expenditure roadmap, ensuring a predictable stream of multi-decade regulated returns for institutional shareholders.
Official Sources Section
According to official regulatory filings submitted to the National Stock Exchange of India (NSE) on July 9, 2026, the formal Letter of Intent (LoI) has been processed and accepted by the corporate board. The overall scheduled commercial operation date (COD) for the complete grid expansion asset is legally capped at 36 months from the effective contract execution date, with all baseline construction risks underwritten by corporate insurance provisions.
Quote Section
In the official presentation delivered to exchange desks and electricity regulatory authorities concerning the multi-state infrastructure addition, administrative representatives detailed the operational value of the network:
"According to officials, emerging as the successful bidder for the WR-ER Inter-Regional Network Expansion Scheme Part-A reinforces the company's leading role in domestic grid market capitalization, directly supporting steady power flow across four core industrialized states under a 35-year BOOT model."
Why It Matters
The modernization of major inter-state transmission lines carries deep practical implications for regional economic stability:
For Citizens and Industrial Consumers: Eradicating inter-regional power constraints dramatically lowers localized grid failure risks, minimizing blackouts for factories and residential consumers across Jharkhand, West Bengal, and Odisha.
For Power Generation Companies: Enhanced 765 kV and 400 kV lines allow regional thermal and upcoming clean energy plants to run at optimal capacity without facing forced generation cutbacks due to line congestion.
For Infrastructure Investors: Securing predictable long-term contracts under the BOOT framework maintains Power Grid’s robust cash flows, reinforcing its status as a stable dividend-yielding equity anchor.
Key Facts at a Glance
Project Title: WR-ER Inter-Regional Network Expansion Scheme Part-A.
Operational Model: Awarded under the competitive TBCB route on a 35-year Build, Own, Operate, and Transfer (BOOT) framework.
Substation Grid Footprint: Setup of two new 765/400 kV substations across Jharkhand and Chhattisgarh, alongside active expansions in West Bengal.
Transmission Routing: Construction of ultra-high-voltage 765 kV and 400 kV lines cutting across Jharkhand, Chhattisgarh, and Odisha.
FAQ Section
What is an Inter-State Transmission System (ISTS) project?
An ISTS project refers to high-voltage electrical grid infrastructure that cuts across multiple state boundaries, allowing the central grid to transfer massive bulk power volumes from electricity-surplus generation hubs to deficit states.
What does the BOOT model mean for this specific contract?
Under the Build, Own, Operate, and Transfer (BOOT) model, Power Grid finances and constructs the grid infrastructure, collects a annual transmission tariff for 35 years, and hands the asset to the Central Transmission Utility at zero cost.
How long does Power Grid have to complete construction?
Per the bid guidelines managed by the project coordinators, Power Grid has a maximum implementation window of 36 months from the contract's effective start date to achieve full commercial operation.
Source: Statutory material corporate event disclosures filed with The National Stock Exchange of India (NSE), project bidding tracking dossiers compiled by REC Power Development and Consultancy Limited (RECPDCL), and internal engineering declarations from the Power Grid Investor Relations desk.
