SPML Infra wins ₹1,128 cr NTPC BESS order in 2026

Deal snapshot: contract size, site, and capacity

SPML Infra Ltd said it has secured a ₹1,128 crore contract from NTPC Ltd to develop a 1 GWh Battery Energy Storage System (BESS) at NTPC’s Barauni Thermal Power Station in Bihar. The company described it as its first large-scale grid battery energy storage project. SPML Infra also said the order is among the largest single BESS orders awarded in India. The project links storage infrastructure with an operating thermal power plant, reflecting how grid-scale batteries are being positioned alongside conventional generation assets. The BESS size in the announcement is 250 MW / 1,000 MWh, which equals 1 GWh of stored energy. The company said the system is intended to support peak load management, grid stability, and renewable energy integration. NTPC did not provide additional details in the provided text, but SPML Infra’s scope note is extensive and execution-led.

Why the order matters for SPML Infra

For SPML Infra, the NTPC award is a clear expansion into a high-visibility segment of the power value chain. The company framed energy storage as a core pillar of its growth strategy and said this order strengthens its position in India’s battery energy storage ecosystem. The project is also positioned as a strategic reference project because it is grid-scale and attached to a major public-sector utility site. In India’s energy transition narrative, grid storage is increasingly linked to integrating variable renewables and improving grid reliability during peaks. SPML Infra’s statement ties the BESS directly to those needs rather than presenting it as a standalone build. The company also linked the order to its broader energy storage push in partnership with technology provider Energy Vault. That partnership was referenced as part of the company’s strategy to move deeper into energy storage infrastructure.

What SPML Infra will build at Barauni

SPML Infra said the scope of work includes supply, civil works, and erection of the 250 MW / 1,000 MWh BESS. The build includes 5 MWh DC containers with a Battery Management System (BMS) and Thermal Management System (TMS). It also includes 33 kV panel boards, 220 kV DC and AC cables, a 220 kV switchyard, and associated accessories. These components indicate a full EPC-style delivery rather than only equipment supply. The inclusion of switchyard and high-voltage cabling points to the grid interconnection work that typically determines commissioning timelines and system readiness. The company did not provide the chemistry or vendor list beyond referencing Energy Vault as a technology partner. It also did not disclose tariff structure or ownership model in the text provided.

Timeline: 18 months of execution plus 15 years of O&M

The company said the project will be executed over 18 months. After completion, SPML Infra will provide 15 years of operation and maintenance. A long O&M period typically ties performance and system availability to the contractor’s responsibilities, though the announcement did not describe performance guarantees. The 18-month execution window sets expectations for near-term project activity and working capital deployment. The 15-year O&M scope also implies a longer service revenue stream, but the company did not break out EPC versus O&M value. SPML Infra did not disclose milestone dates, commissioning schedule, or phased handover details. Even so, the combination of construction and multi-year O&M indicates an end-to-end role in keeping the BESS operational over its core service life.

Management commentary: focus on grid flexibility and scale

Abhinandan Sethi, Managing Director, SPML Infra Ltd, described the NTPC partnership as both a privilege and a responsibility. He said: “Partnering with NTPC on this landmark project is both a privilege and a responsibility we embrace fully. We are here to build the grid India needs - flexible, stable, and built for scale.” The statement aligns the project with grid modernisation rather than only order book growth. SPML Infra also said the project will integrate large-scale battery storage with existing thermal power infrastructure to support peak load management, grid stability, and renewable integration. The company’s framing suggests the project is intended to improve system flexibility at a thermal power station rather than displace it. No additional comments from NTPC officials were included in the provided text.

Market reaction: SPML Infra shares and limited coverage

The provided text said SPML Infra’s share price jumped over 5% to about ₹224.85 on May 6, 2026, following investor interest around the contract win. It also noted that analyst coverage on SPML Infra is limited. A recent Edelweiss note mentioned potential for the company to “bounce back stronger,” and cited a target price of ₹253.10. These references reflect the market’s attention to execution capability and the valuation lens typically applied to EPC and infrastructure names. The text did not include SPML Infra’s market capitalisation or trading volumes. It also did not provide updated guidance or revised financial projections tied to the BESS order.

Wider pipeline: orders, FY25 PAT, and BESS manufacturing plans

Separately, the provided text referenced SPML Infra securing new orders worth ₹4,324 crore, strengthening its project pipeline. It also said the company is the lowest bidder (L1) for a ₹1,128 crore BESS implementation project with NTPC, alongside the statement that it has secured the contract. SPML Infra reported FY25 standalone Profit After Tax (PAT) of ₹49.3 crore, as per the same information set. The text also described a strategic move into BESS manufacturing, including the acquisition of 99,000 sq. m. of land. The company plans to invest ₹175 crore in a facility targeting 2.5 GWh capacity by the first quarter of FY27, scaling up to 5 GWh by FY28. It estimated annual revenue potential from the facility at ₹4,000-5,000 crore.

NTPC’s broader storage push: board-approved 4.70 GWh plan

The provided text also highlighted NTPC’s broader focus on storage. In a board meeting on March 28, 2026, NTPC approved ₹5,821.90 crore for battery energy storage systems totalling 4.70 GWh capacity. This was presented as part of NTPC’s approach to address renewable intermittency and support grid stability. In a separate market reference, NTPC shares traded around ₹376 on March 30, 2026 on NSE, with the note stating year-to-date performance of 11.88% and 5.22% over the past year. These details place the SPML Infra award within a larger capital cycle for grid-scale storage. The text did not confirm whether the Barauni BESS is part of the 4.70 GWh approvals or a separate procurement track.

Key facts table

What investors may track next

The main measurable variable from here is execution, given the size and complexity of a grid-connected BESS with high-voltage integration. Investors will also watch for clarity on contract structure, including EPC payment milestones and any performance-linked obligations, which were not detailed in the provided text. The company’s stated manufacturing plans will likely be assessed against timelines, capex of ₹175 crore, and the targeted 2.5 GWh and 5 GWh capacity milestones. For NTPC-linked work, future disclosures may clarify whether Barauni is connected to the board-approved 4.70 GWh storage plan and how procurement is being sequenced. For now, the announcement positions SPML Infra as a visible participant in India’s fast-expanding utility-scale battery storage pipeline.