SPML Infra Limited secured a ₹1,128 crore contract from NTPC Limited on Wednesday to develop a 1 GWh Battery Energy Storage System (BESS) at the Barauni Thermal Power Station in Bihar. The announcement sent the company’s shares up 4.20 per cent to ₹222.81 on the NSE by midday, touching an intraday high of ₹234.80, with trading volumes of 27.08 lakh shares worth ₹61.51 crore.
The contract, awarded by the National Thermal Power Corporation, is among the largest single BESS orders in India to date. It marks SPML Infra’s first large-scale grid battery storage project, representing a significant strategic pivot for the Kolkata-based infrastructure company, which has traditionally operated in water management and power distribution.
The scope of work covers supply, civil construction, and installation of a 250 MW/1,000 MWh system comprising 5 MWh DC containers equipped with Battery Management Systems and Thermal Management Systems, along with 33 kV panel boards, 220 kV switchyard, and associated cabling. Execution is scheduled over 18 months, followed by a 15-year operation and maintenance period.
SPML Infra will execute the project in partnership with Energy Vault (NYSE: NRGV) as its technology provider. Managing Director Abhinandan Sethi described the win as a firm entry into the large-scale battery storage sector, positioning the company as a builder of flexible grid infrastructure for India.
The stock has delivered returns of 32.68 per cent over the past year and an exceptional 562 per cent over three years, against the Nifty 50’s 33.23 per cent and -1.26 per cent respectively over the same periods. The company’s current market capitalisation stands at ₹1,741.24 crore. The BESS project is expected to support peak load management and renewable energy integration within NTPC’s thermal power network.
Published on May 6, 2026