Tamil Nadu Awards 1,400 MWh BESS To Eagle Infra And OPG

27 Feb 2026 CW Team

Under the contracts the developers will be responsible for designing, financing, installing and operating the battery energy storage systems and for integrating them with the state transmission network. The facilities will draw power from the grid through TANTRANSCO and TNPDCL and will charge and discharge capacity under instructions from the state load dispatch centre to manage peak demand and grid fluctuations. The projects will operate as standalone BESS assets connected to the transmission system.

The tender imposed strict technical standards requiring the batteries to maintain 95 per cent annual availability and to complete one and a half cycles per day while delivering a minimum round?trip efficiency of 85 per cent. To improve financial viability the government will provide viability gap funding equivalent to Rs one point eight million per MWh. Developers have 18 months to complete the construction and the commissioned systems will operate under a 15?year contract.

The allocation is intended to strengthen grid stability, support renewable energy integration and provide additional flexibility to the state network as variable generation grows. The slightly different tariffs signal market dynamics and the reduction from the tender target of 1,500 MWh to an awarded 1,400 MWh reflects the final procurement outcome. Once operational the BESS assets are expected to help manage peak demand and reduce operational pressure on conventional generators.

In a state auction conducted by the Tamil Nadu Green Energy Corporation, two developers were awarded a majority of the capacity in a seven standalone Battery Energy Storage System (BESS) tender that originally targeted 375 megawatts (MW) and 1,500 megawatt?hours (MWh) of storage. The final awarded energy capacity amounted to 1,400 MWh and the MW capacity was split almost evenly between the winners, with each developer securing 175 MW and 700 MWh. Eagle Infra India secured capacity at a tariff of Rs315,000 per MW per month and OPG Power Ventures won an equivalent quantum at a tariff of Rs316,000 per MW per month. Under the contracts the developers will be responsible for designing, financing, installing and operating the battery energy storage systems and for integrating them with the state transmission network. The facilities will draw power from the grid through TANTRANSCO and TNPDCL and will charge and discharge capacity under instructions from the state load dispatch centre to manage peak demand and grid fluctuations. The projects will operate as standalone BESS assets connected to the transmission system. The tender imposed strict technical standards requiring the batteries to maintain 95 per cent annual availability and to complete one and a half cycles per day while delivering a minimum round?trip efficiency of 85 per cent. To improve financial viability the government will provide viability gap funding equivalent to Rs one point eight million per MWh. Developers have 18 months to complete the construction and the commissioned systems will operate under a 15?year contract. The allocation is intended to strengthen grid stability, support renewable energy integration and provide additional flexibility to the state network as variable generation grows. The slightly different tariffs signal market dynamics and the reduction from the tender target of 1,500 MWh to an awarded 1,400 MWh reflects the final procurement outcome. Once operational the BESS assets are expected to help manage peak demand and reduce operational pressure on conventional generators.

Building Material

27 Feb 2026

Seppa Township Road Being Paved With Bituminous Concrete

Work is underway to pave the main township road in Seppa with bituminous concrete, marking a significant upgrade to the local transport network. The project is being overseen by the district administration and carried out by municipal contractors using mechanised laying equipment. The initiative aims to replace older surface material that had become potholed and dusty, and to improve all weather access for residents and public services. Local officials have coordinated traffic diversions and site safety measures to minimise disruption during construction. The work includes preparing the base, ..

Infrastructure Transport

27 Feb 2026

Tribal Hohos Urge CM To Approve Foothills Road Phase Two

13 Dimapur-based tribal Hohos have urged the Chief Minister to ensure the issuance of the second phase work order for the Foothills Road project on or before 31 March 2026, warning that failure to meet the deadline would compel them to resort to democratic means. The bodies expressed appreciation for government support towards the project, known as the Nagaland People's Road, while stressing that remaining formalities must not be delayed. They described the project as a people-driven initiative of high public value. The Foothills Road project covers a stretch of 395.9 kilometres from Tizit in ..

Infrastructure Transport

27 Feb 2026

India Approves First Underwater Road-Rail Tunnel Project

The Indian government has approved the country's first underwater road-rail tunnel project, marking a major step in urban and coastal infrastructure development. The decision signals a shift towards integrated transport corridors that combine road and rail modes to enhance connectivity and resilience. Authorities characterised the approval as a milestone for engineering ambition and national connectivity planning. The move reflects rising investment in large scale infrastructure to support urbanisation and coastal commerce. France has positioned India as a top priority market and is targeting ..