SPML Infra Proprietary 104.4 kWh BESS Battery Pack Completes Global Certification and Testing

Market snapshot: SPML Infra Limited has announced a key milestone in its green energy technology expansion. The company's proprietary 104.4 kWh Battery Energy Storage System (BESS) battery pack, developed under its own intellectual property, has successfully completed critical international safety, performance, and transportation certifications. This technical achievement marks a significant step towards the commercialization and domestic manufacturing of SPML's proprietary energy storage solutions in India.

Data Snapshot

• The proprietary BESS battery pack has a certified storage capacity of 104.4 kWh.
• SPML Infra secured a ₹1,128 cr order from NTPC to develop a 1 GWh BESS project at Barauni, Bihar.
• The company enters the BESS segment with its order book reaching ₹5,094 cr as of June 2026.

What's Changed

• SPML Infra transitioned from a legacy pure-play water and power infrastructure builder to a technology-backed energy storage manufacturing and solutions company.
• The company has successfully built out its intellectual property, completing key international certifications (UL9540A, IEC) for its 104.4 kWh battery pack, moving from R&D toward commercialized deployment.
• Establishment and completion of Phase-I of its BESS manufacturing facility in Pune, Maharashtra, supporting local production.

Key Takeaways

• Product Validation: The 104.4 kWh battery pack successfully cleared international certifications including UL9540A (thermal runaway safety) and IEC standards (performance, functional safety, and electromagnetic compatibility).
• Commercial Readiness: The global standard approvals enable SPML to deploy these proprietary packs for grid-scale and commercial projects, starting with local integration.
• Synergy with Large Projects: This certification strengthens SPML's execution capability for major storage orders, specifically its landmark ₹1,128 cr BESS contract from NTPC.
• Manufacturing Scale: Phase-I of the Pune manufacturing plant has been completed, providing the localized production framework required to scale these certified battery packs.

SAHI Perspective

SPML Infra's successful clearance of global certifications for its 104.4 kWh battery pack represents a strong strategic execution of its technology-transfer model. Backed by its partnership with US-based Energy Vault, the company is rapidly closing the gap from a traditional engineering, procurement, and construction (EPC) player to a tech-enabled BESS manufacturer. While legacy debt and balance sheet issues historically limited bidding capabilities, the technical validation of its proprietary battery pack, paired with upgraded credit ratings to BBB (Stable), positions the company to aggressively target the expanding domestic energy storage market.

Market Implications

The certification of indigenous BESS technology reduces dependence on imported battery packs, supporting India's 'Make in India' and clean energy targets. For SPML, it secures a competitive edge in bidding for future utility-scale BESS annuity tenders. The successful validation of their technology is also expected to attract institutional investors and boost operating margins over the medium term.

Trading Signals

Market Bias: Bullish

Technical validation of proprietary BESS technology combined with a large order book of ₹5,094 cr provides strong long-term revenue visibility. Clearing international UL and IEC standards significantly de-risks the commercial execution of the company's ₹1,128 cr NTPC BESS contract.

Overweight: Power Infrastructure, Energy Storage Systems, Clean Tech

Trigger Factors:

• Commercial rollout and dispatch of the first batch of proprietary battery packs from the Pune facility.
• Further updates on the execution and milestone billing of the NTPC Barauni ₹1,128 cr project.
• Potential upgrade in credit rating beyond the current BBB status as the order book translates into revenue.

Time Horizon: Medium-term (3-12 months)

Industry Context

India is accelerating its battery storage transition, targeting a massive rollout of utility-scale energy storage to integrate its growing renewable capacity. The government's mandating of storage integration has triggered a wave of large-scale tenders. Traditional infrastructure companies are increasingly seeking global technology alliances to pivot into BESS, making indigenous certifications a crucial entry barrier for large-scale public sector contracts.

Key Risks to Watch

• Supply Chain Dependencies: Sourcing raw battery cells or critical chemicals globally could lead to production delays if supply chains tighten.
• Execution Risk: Grid-scale BESS is highly technical; any delay in completing the remaining manufacturing phases in Pune or executing the NTPC Barauni project could stress working capital.
• Competition: Major power and technology conglomerates are aggressively entering the BESS segment, which could put pressure on long-term margins.

Recent Developments

SPML Infra completed Phase-I of its BESS manufacturing facility in Maharashtra on August 13, 2026. Prior to this, on May 6, 2026, the company was awarded a landmark ₹1,128 cr contract by NTPC to construct a 1 GWh BESS in Bihar. This strategic entry into the storage domain is supported by an exclusive technology-transfer agreement signed with Energy Vault, USA, on April 3, 2025.

Closing Insight

Clearing global certifications is more than a technical milestone; it is a financial catalyst. By establishing verified, proprietary BESS IP, SPML Infra transforms itself from an infrastructure builder into an industrial technology owner, positioning it well to capture high-margin segments in India's green energy transition.

High Performance Trading with SAHI.