Why India's BESS growth story depends on delivering bankable projects

India has demonstrated the ability to deploy battery storage at scale; the real test now is delivering financially viable operational assets.

In brief

• The Indian BESS market has entered a new phase where execution, not policy ambition, will likely determine success.  
• A rapidly expanding BESS tender pipeline has created strong visibility for future growth, yet only a fraction of announced capacity has been commissioned. 
• Falling battery prices, supportive regulations and growing domestic manufacturing improve BESS economics, but long-term viability will depend on project bankability.

For years, India's energy transition has been defined by record-breaking renewable capacity additions. Today, however, the conversation is shifting from generation to storage. As solar and wind account for an increasing share of electricity supply, the ability to store energy and dispatch it when needed is becoming one of the most important pillars of the country's power system.

The emergence of the Battery Energy Storage System (BESS) ecosystem reflects this transition. What began as a series of pilot projects, telecom backup systems and microgrid applications has evolved into a strategic component of national energy planning. According to the report, “India’s BESS market: A shift from tendered capacities to bankable execution”, the Central Electricity Authority’s planning framework has created a pathway for large-scale storage deployment, transforming battery storage from an experimental technology into a mainstream infrastructure asset.

Yet beneath the optimism lies a more important question: can India execute?

The answer may determine whether the country realizes its ambitious energy storage objectives or joins the long list of infrastructure markets where announced capacity far exceeds commissioned capacity.

What is driving India's BESS market growth?

The evolution of BESS in India can broadly be described in three phases. The first was characterized by experimentation. The second was driven by policy support, including viability gap funding, procurement frameworks and transmission incentives. The third phase, now underway, focuses on execution and financial discipline.

This shift matters because storage projects are fundamentally different from conventional renewable assets. Their economics depend not only on capital expenditure but also on degradation, augmentation requirements, operating efficiency, replacement cycles and financing costs. As a result, project success increasingly depends on sophisticated system design and lifecycle planning rather than headline tariff competitiveness alone.

The strongest evidence of market momentum can be seen in the expansion of the BESS tender pipeline. Project counts have increased in recent years, spanning standalone storage projects, renewable-plus-storage configurations and round-the-clock power tenders. On paper, the market appears robust, with more than 100 GWh of capacity having entered various stages of procurement¹. 

However, the data reveals a more nuanced story.

What challenges are slowing BESS deployment in India?

A large proportion of announced projects remain trapped between the tendering, award and construction stages. Operational capacity remains negligible compared to the total volume tendered. The implication is clear: India's challenge is no longer about creating demand but enabling projects to secure power purchase agreements, achieve financial closure and reach commissioning milestones. 

The outlook for grid-scale battery storage remains strong because the demand drivers are real and enduring. Grid operators need flexibility to manage renewable intermittency. Distribution companies require tools to improve reliability. Energy planners increasingly recognize storage as a strategic resource rather than an optional add-on. These structural factors suggest that storage demand is likely to persist regardless of short-term market fluctuations. 

How are battery costs affecting BESS tariffs?

Cost dynamics are also working in India's favor. The sharp decline in lithium-ion battery prices and raw material costs has improved storage economics considerably. Lower battery prices have made project development more attractive and have enabled tariffs to reach levels that would have been considered unrealistic a few years ago.

But lower costs alone do not guarantee success.

Recent tariff movements suggest that the market may be correcting after a period of hyper-competitive bidding. Several projects have been awarded at tariffs that raise questions about their ability to absorb financing costs, battery replacement requirements, foreign exchange exposure and long-term operating expenses. The report's financial assessment indicates that sustainable pricing often remains materially higher than some of the most aggressive winning bids. 

Why is project bankability critical for India's BESS market?

This is where the BESS project bankability becomes the defining issue. Infrastructure investors and lenders are not evaluating storage projects based solely on installation costs. They are assessing whether revenues can support debt repayment, replacement cycles, performance guarantees and equity returns over a 15-year or longer operating period. A project that wins a tender but cannot secure financing ultimately contributes little to national deployment targets.