Beyond Lithium: India's Grid Revolution Begins with 100 MWH Flow Battery

GURUGRAM, India – July 21, 2026 – In a move that signals a seismic shift in India's energy storage strategy, Gurugram-based Delectrik Systems has secured a contract to deploy the nation's first utility-scale Vanadium Redox Flow Battery (VRFB), a colossal 100 MWH project. Awarded by NTPC Renewable Energy Limited, a subsidiary of India's largest power utility, the project represents a decisive step away from over-reliance on lithium-ion and a bold investment in a technology uniquely suited for the demands of a renewable-powered grid.

The battery system, slated for deployment in 2027, will be a critical component of the Khavda Solar Park in Gujarat. This park is not just another solar farm; it is on track to become the world's largest renewable energy installation, with a planned capacity of 30 GW by 2029. For an asset of this magnitude, managing the intermittency of solar power isn't just a technical challenge—it's an existential one. This landmark project, won by Delectrik in collaboration with infrastructure firm Bondada Engineering Limited, is India’s answer to the long-duration storage puzzle.

A Strategic Pivot to Long-Duration Storage

For years, the energy storage conversation has been dominated by lithium-ion technology. While revolutionary for electric vehicles and short-duration grid applications, its limitations become apparent when faced with the task of storing massive amounts of energy for four hours or more. This is where Vanadium Redox Flow Batteries enter the picture, offering a fundamentally different and, for utility-scale applications, superior architecture.

Unlike solid-state batteries, a VRFB stores energy in two external tanks of liquid vanadium electrolyte. These electrolytes are pumped through a central stack of electrochemical cells to charge or discharge. This elegant design decouples the battery’s power (determined by the cell stack) from its energy capacity (determined by the volume of electrolyte). Need more hours of storage? Simply add larger tanks—a scalability feature that is economically and technically challenging for lithium-ion systems.

The advantages for a project like Khavda are profound. First is safety. The water-based electrolyte is non-flammable and non-explosive, eliminating the risk of thermal runaway that haunts large-scale lithium-ion deployments. Second is longevity. VRFBs can operate for over 20 years and endure tens of thousands of cycles with virtually no capacity degradation. The vanadium electrolyte itself doesn't degrade and can be reused, making it a sustainable, long-term asset. For a state-owned utility like NTPC, which plans infrastructure for decades, this long-term stability is a critical financial and operational advantage.

“The first utility scale Flow Battery project is a milestone not just for the company but the country as a whole,” stated Dr. Vishal Mittal, Founder & CEO of Delectrik Systems. “This will be a first non-lithium utility scale BESS project to be deployed in India.”

Powering a Self-Reliant India

Beyond its technical merits, the project is a powerful symbol of India's 'Atmanirbhar Bharat' (self-reliant India) initiative. Dr. Mittal emphasized that this will be the “first project of this scale to be 100% designed, engineered and manufactured in India.” This domestic capability is a strategic imperative. As global supply chains for critical minerals and battery components become geopolitical battlegrounds, developing an indigenous energy storage industry is paramount for national energy security.

NTPC's decision to anchor this technology is no surprise. With a target of 60 GW of renewable capacity by 2032, the utility giant understands that integrating this vast intermittent power requires a diversified storage portfolio. This project serves as a crucial, utility-backed validation of flow battery technology, paving the way for wider adoption across India's rapidly greening grid. The success of Delectrik's smaller 3 MWH VRFB deployment for NTPC in Greater Noida in 2025 undoubtedly provided the confidence needed to commit to a project of this magnitude.

By championing a domestically produced, non-lithium alternative, NTPC is not only securing its own renewable assets but also cultivating a national champion in a high-tech, high-growth sector. This move diversifies India's technological base and builds resilience against the supply chain vulnerabilities associated with a market dominated by a single chemistry.

Delectrik's Blueprint for a Global Footprint

Delectrik Systems is not just building a battery; it is constructing a vertically integrated energy storage powerhouse. The company's strategy reveals an ambition that extends far beyond this initial 100 MWH project. Two newly formed subsidiaries, Delectrik Resources Pvt Ltd (DRPL) and Delectrik Esaas Pvt Ltd (DEPL), are central to this vision.

DRPL is tackling the biggest cost and supply chain challenge for VRFBs: vanadium. By venturing into the upstream business of Vanadium Oxide production, Delectrik aims to control its primary raw material source. This move insulates the company from price volatility and ensures a stable supply, a decisive competitive advantage that few rivals possess. Meanwhile, DEPL is pioneering a downstream business model, offering 'Energy Storage as a Service' (ESaaS). This allows commercial and industrial customers, including energy-hungry data centers, to benefit from energy storage without the prohibitive upfront capital expenditure, paying instead for storage as an operating expense. This innovative model could dramatically accelerate market adoption.

With these strategic pillars in place, Delectrik is targeting an ambitious order book of at least a gigawatt-hour (GWH) of flow battery capacity within the next 12 months. The company has its sights set on international markets, including Australia, ASEAN nations, and Africa—regions that, like India, are grappling with the challenge of integrating large-scale renewables. The NTPC project serves as the ultimate global showcase, a proof-of-concept at a scale that will command international attention.

The successful deployment at Khavda will not just stabilize a portion of India's grid; it will validate an entire technological and industrial strategy. It demonstrates that long-duration, safe, and sustainable energy storage is no longer a future concept but a present-day reality, engineered and delivered from India.