BESS Tender Results: Tamil Nadu Awards At Rs. 3.15 Lakh/MW/Month & Kerala At Rs. 1.81 Lakh/MW/Month

Tamil Nadu and Kerala have recently awarded large standalone Battery Energy Storage System (BESS) tenders, with tariffs reaching new benchmarks despite ongoing concerns around rising battery input costs, currency volatility, and supply-chain pressures.  Both tenders also helped expand the competitive landscape by bringing new players into the BESS market, notably Shreyas Sortex Industries and Eagle Construction.

Tamil Nadu Generation and Distribution Corporation’s energy arm, TNGECL, awarded a 375 MW / 1,500 MWh BESS project with a 1.5-cycle requirement for 15 years at a lowest discovered tariff of ₹3.15 Lakh/MW/month. It announced the tender results two months after issuing the tender in November 2025

 Meanwhile, NVVN was awarded the 250 MW / 500 MWh BESS tender for Kerala, with 420 cycles annually for 15 years at a significantly lower tariff of ₹1.81 Lakh/MW/Month. NVVN awarded the bids for this project three months after issuing this tender in October 2025. 

The price discovery in these two newly awarded standalone BESS tenders comes at a time when the sector has been grappling with multiple headwinds. These include discussions around metal prices rising nearly three times, battery export VAT reductions, dollar fluctuations, and overall increases in battery costs. These factors have previously led some original equipment manufacturers (OEMs) to cancel contracts signed at lower tariffs. Against this backdrop, the TNGECL and NVVN (Kerala) bids are being seen as a clear indicator of evolving market dynamics.

In the Kerala (NVVN) BESS tender, multiple developers secured capacity at varying tariffs.
Shreyas Sortex Industries Private Limited emerged as the lowest bidder at ₹1,81,000 per MW per month, closely followed by OPG Power Generation Private Limited at ₹1,82,000.
Oriana Power Limited won capacity at ₹2,16,000, while DB Power BESS Storage Limited secured a portion of the project at ₹2,21,000.
NTPC Green Energy won capacity at a tariff of ₹2,22,000, and Power Grid Corporation of India Limited emerged as the highest successful bidder at ₹2,24,600 per MW per month.

NVVN Kerala 250/500 MWh BESS Tender Results

The TNGECL tender marked a milestone as it was the first tender in India with a 1.5-cycle requirement over 15 years.

Tamil Nadu Awards First BESS Tender With 1.5 Cycle

In Tamil Nadu’s BESS tender, Eagle Construction Co won capacity at the benchmark tariff of ₹3,15,000 per MW per month.OPG Power Generation Private Limited followed closely with a bid of ₹3,16,000, while Onward Solar Power Private Limited secured capacity at ₹3,25,000.

Other successful bidders included FORCEOne SD Private Limited at ₹3,27,000, Brics Renewable Energy Private Limited at ₹3,28,000, and Sri Srinivasa Constructions Private Limited at ₹3,32,000 per MW per month.

Overall, the latest tender results indicate that both Kerala and Tamil Nadu are moving aggressively to add standalone BESS capacity, even as market participants navigate cost pressures and policy uncertainty. With new entrants and competitive pricing, momentum in India’s BESS market continues to build rapidly.

Winning Bidder of TNGECL’s 375 MW / 1500 MWh (1.5 cycle, 15 yrs)