By: Udyut Goyal, Business Development Head, AmpereHour Energy
India’s energy transition is entering a phase where adding more renewable capacity is no longer the only challenge. The bigger question is becoming increasingly practical: How do we make clean electricity available when it is needed, not just when the sun is shining or the wind is blowing?
This is where Battery Energy Storage Systems (BESS) are beginning to change the equation.
For years, batteries were largely viewed through the lens of electric mobility or backup power. Today, that perception is changing rapidly. At grid scale, BESS is emerging as an important piece of energy infrastructure one that can store electricity when supply is abundant, release it when demand rises, respond within milliseconds to grid fluctuations and help renewable energy become more predictable.
India’s renewable energy expansion makes this role particularly important. The country had over 288 GW of renewable energy capacity as of June 2026, including more than 162 GW of solar capacity. As the share of variable renewable generation grows, the ability to balance generation and demand will become just as important as generating more electricity.
The transition from generation to flexibility
The traditional electricity system was built around a relatively simple principle: generate electricity when consumers need it. Renewable energy changes that model.
Solar generation peaks during the day, while electricity demand often remains high in the evening. Wind generation can vary depending on weather conditions. This creates a growing need for flexibility within the power system.
BESS provides that flexibility.
A battery can charge when renewable generation is high and electricity is relatively inexpensive, then discharge during peak demand. It can also provide services such as frequency regulation, peak management, renewable integration and grid balancing.
The significance of this goes beyond the battery itself. Storage can potentially reduce pressure on transmission infrastructure, improve utilisation of renewable assets and reduce the need to rely on conventional generation simply to manage short-duration fluctuations.
The Ministry of New and Renewable Energy notes that India’s energy storage requirement is expected to rise substantially from 82.37 GWh in 2026-27 to 411.4 GWh by 2031-32, with BESS accounting for an increasing share of that requirement.
BESS is becoming a grid asset, not an add-on
One of the most important shifts underway is the move from renewable-plus-storage projects to standalone BESS
In the earlier stages of the market, batteries were often considered an extension of a solar or wind project. Increasingly, storage is being procured as an independent grid resource that can be dispatched according to system requirements.
This is a significant change in how the industry thinks about energy storage.
In 2025, standalone storage tenders accounted for more than 71% of the total storage capacity tendered in India, according to an analysis by IEEFA, with standalone BESS making up 60% of the capacity.
The government’s own projections underline the scale of the opportunity. According to the Ministry of New and Renewable Energy, the Central Electricity Authority estimates that India will require 60.63 GW of energy storage capacity by 2029-30, including 41.65 GW from BESS.
This means the future of BESS will not be determined only by how much battery capacity India can manufacture. It will also depend on how effectively that capacity can be integrated into the power system.
The economics have to work
Technology is only one side of the BESS story. The other is economics.
Battery storage projects involve substantial upfront capital expenditure, while revenues can come from multiple sources, including capacity contracts, energy arbitrage and ancillary services. The commercial model therefore needs to recognise the different services a battery can provide.
This is particularly important because falling tariffs have created both excitement and concern in the sector. Extremely competitive bids can accelerate deployment, but if project economics do not account for battery degradation, financing costs, replacement requirements and changing input prices, projects may struggle over the long term.
The recent Indian market has already demonstrated this tension. While storage tariffs reached highly competitive levels in 2025, subsequent increases in battery and input costs have raised questions about the sustainability of some earlier bids.
The next stage of the market therefore needs to focus not simply on the lowest tariff, but on bankable, sustainable and technically robust projects.
Manufacturing will determine strategic resilience
There is another dimension to India’s BESS opportunity: manufacturing.
If storage is going to become critical infrastructure, dependence on a concentrated global supply chain creates strategic vulnerabilities. India therefore has an opportunity to develop capabilities across the BESS value chain from cells and battery packs to containers, power conversion systems, thermal management, battery management systems, energy management software and system integration.
Domestic manufacturing is not only about import substitution. It can create an ecosystem of engineering expertise, skilled employment and technology development.
The emergence of large-scale BESS projects can also create demand for Indian companies capable of designing systems specifically for the country’s operating conditions high temperatures, diverse grid environments, varying load profiles and geographically distributed renewable generation.
Intelligence will become as important as chemistry
The next competitive advantage in BESS may not come solely from better batteries. It may come from better systems.
A modern BESS is increasingly a combination of hardware, power electronics, software and data. Battery management systems monitor cell health and performance. Energy management platforms decide when to charge or discharge. Predictive analytics can identify potential failures before they become expensive outages.
This makes digitalisation central to storage.
For large projects, the ability to monitor battery performance in real time, optimise dispatch, manage degradation and validate system performance can directly influence project economics.
In other words, the future BESS will not simply store electricity. It will increasingly make decisions about electricity.
Building for India’s next energy chapter
India’s energy transition is often described in terms of solar panels, wind turbines and transmission lines. BESS adds another layer to that story: flexibility.
The country does not merely need more electrons from renewable sources. It needs a power system capable of managing when those electrons are generated, where they are generated and when consumers need them.
That is why BESS should be viewed as more than a battery technology. It is becoming an enabler of a more flexible, responsive and resilient electricity system.
The opportunity ahead is significant, but so is the responsibility. India will need projects that are commercially viable, technologies that are safe and reliable, manufacturing ecosystems that can scale, and policies that reward the full value storage brings to the grid.
The real success of India’s BESS journey will therefore not be measured by the number of battery containers installed.
It will be measured by how confidently the grid can integrate renewable energy, manage peaks, respond to uncertainty and deliver reliable power.
The battery may store the energy. But the larger opportunity is to build the intelligence and infrastructure that allows India to use clean energy when it matters most.