Tata Power Renewable Energy Limited (TPREL) has commissioned a 100 MW group captive solar project in Tamil Nadu, expanding its total utility portfolio to 12.3 GW. The facility, located in Kayathar, marks the company’s surpassing of the 7 GW operational capacity milestone.

The project, designated TNGC-2, is situated in Vellalankottai and Nalandhula villages. It represents a significant step in the Tata Group’s decarbonisation strategy, supplying clean power directly to three key subsidiaries. This expansion reinforces TPREL’s position as a major player in India’s clean energy transition.

Project Specifications and Technology

The Kayathar project is engineered with India’s first deployment of Flexible Terrain Compatible (FTC) Single Axis Tracker technology for a Tata project. This innovation aims to maximise energy generation across varying terrain conditions while improving operational efficiency.

Key technical specifications include:

• Modules: 261,660 Mono PERC bifacial solar modules
• Technology: FTC Single Axis Tracker
• Grid Connection: Transmission via Kayathar 400 kV Grid Substation (GSS)
• Annual Generation: 240.63 million units (MUs)
• Carbon Offset: Approximately 1.5 lakh tonnes of CO2 emissions per annum

Energy Distribution Among Beneficiaries

The power generated will be allocated among three Tata Group entities, supporting their specific operational needs. The distribution reflects the varying energy demands of manufacturing, electronics, and real estate sectors within the group.

Portfolio Growth and Pipeline

With this commissioning, TPREL’s operational capacity now exceeds 7 GW. The existing portfolio comprises more than 5.7 GW of solar assets and 1.3 GW of wind energy assets. This mix highlights the company’s diversified approach to renewable generation.

What the Numbers Show

The composition of the operational portfolio reveals a heavy reliance on solar energy, which accounts for approximately 81% of the 7 GW operational capacity (5.7 GW solar vs 1.3 GW wind). While wind provides diversification, the current operational base is predominantly solar-driven. This concentration aligns with the broader pipeline strategy, where solar also constitutes a larger share (2.2 GW) compared to wind (3.1 GW) in the upcoming additions, though the gap narrows significantly in the development stage.

Future Expansion Plans

TPREL has an additional 5.3 GW under various stages of development. This pipeline includes:

• 2.2 GW of solar projects
• 3.1 GW of wind projects

These assets are slated for phased commissioning over the next 6 to 24 months. The addition of significant wind capacity in the pipeline suggests a strategic move to balance the currently solar-heavy operational portfolio in the medium term.

This expansion supports India’s target of achieving 500 GW of non-fossil fuel capacity by 2030. Tata Power continues to leverage its expertise in large-scale renewable assets, including utility-scale solar, floating solar, and Battery Energy Storage System (BESS) projects.

Tata Power shares fell 4.7% intraday to ₹348.20 after the Singapore International Commercial Court dismissed its challenge to arbitral awards in the Kleros Capital Partners dispute. The stock closed at ₹352 on the BSE, marking its lowest close since January 28, 2026.

Market reaction and potential liability

The market sell-off followed the court's rejection of Tata Power's arguments regarding a breach of natural justice. Bloomberg reported that the company faces a potential payout of over $640 million, for which it has made no provision. This figure comprises a $490.3 million arbitration award, approximately $10 million in legal and additional costs, plus 5.33% interest accrued since November 2020. Morgan Stanley noted this liability represents around 5% of the company's market capitalisation.

The dispute stems from Kleros' claim that Tata Power violated an agreement regarding a bid for a coal asset in Russia, denying Kleros the opportunity to benefit from the deal.

Court ruling details

The Singapore International Commercial Court issued its judgment on August 26, 2026, rejecting Tata Power's challenge to two arbitral awards dated July 1, 2025 and August 27, 2025. These awards originated from arbitration proceedings initiated by Kleros on November 30, 2020. The court also dismissed Tata Power's challenge to the Singapore International Arbitration Centre's June 5, 2025 decision regarding the appointment of two arbitrators who issued the majority award. The court held there was no breach of natural justice or fair hearing rules.

Appeal timeline

Tata Power has 28 days from the August 26, 2026 judgment to file an appeal with the Singapore Court of Appeal. The company confirmed it will file this appeal within the stipulated period. This disclosure was made under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015.

Significance of the ruling

The dismissal upholds the earlier arbitral awards against Tata Power. While the ruling brings procedural finality to the current stage, the pending appeal means the legal matter remains unresolved. The outcome reinforces the validity of the majority arbitrators' decisions despite Tata Power's objections to their appointment.