Can Hybrid Renewable Energy Projects with BESS Be a Game Changer in India’s Energy Ecosystem?

For hybrid renewable-plus-storage projects to scale, policy and market design will have to evolve alongside technology.

August 27, 2026. By News Bureau

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articles

Kurang Panchal

Rajesh Power Services Ltd.

Hybrid renewable energy projects

BESS

Energy Ecosystem

Central Electricity Authority

Discoms

VGF scheme

India’s renewable energy story has largely been measured in gigawatts added. The next phase may need a different measure: how much renewable electricity can be delivered when the grid actually needs it.

That distinction is becoming increasingly important as electricity demand rises and renewable generation takes a larger share of the power mix. India met a peak demand of around 256.1 GW on April 25, 2026, while the Central Electricity Authority’s projections point to substantially higher demand in the years ahead.

The challenge is straightforward. Solar generation is strongest during the day, while demand often remains high into the evening. Wind generation varies with weather conditions. The grid, however, cannot ask consumers to adjust their electricity consumption every time renewable output changes.

This is where hybrid renewable energy projects combined with Battery Energy Storage Systems (BESS) become relevant.
India’s renewable expansion has created an important foundation. But adding generation capacity is only one part of building a reliable power system. The more renewable electricity enters the grid, the more important it becomes to manage variations in generation and match supply with demand.

The scale of this requirement is already visible in the Central Electricity Authority’s assessment for 2029-30. It estimates a total energy storage requirement of 60.63 GW, including 41.65 GW of BESS and 18.98 GW of pumped storage, equivalent to 336.4 GWh of storage. The CEA also estimates that some variable renewable energy generation may not be absorbed, particularly during periods when renewable generation profiles do not align with the load curve and other system constraints come into play.

The issue, therefore, is not whether India needs more renewable generation. It is how efficiently that generation can be integrated into a power system that has to operate every hour of every day.

A solar-wind hybrid project can address part of this problem by combining two generation sources with different production patterns. When solar output falls, wind may contribute; when wind conditions change, solar can provide generation during daylight hours.

Hybridisation does not eliminate variability. But it can create a generation profile that is potentially more complementary than relying on a single renewable source.

Adding BESS changes the equation further.

A battery can store electricity when renewable generation exceeds immediate demand and discharge it later. In simple terms, it allows electricity generated at one time to be used at another.

That flexibility matters. A project that produces power at noon but cannot meet an evening requirement has limited value for a buyer seeking predictable supply. A project that combines generation with storage has a greater ability to shape when electricity is delivered.

This shift is already visible in the way renewable power is being procured. In 2026, SECI issued a tender for assured peak supply of 6,000 MWh from 1,500 MW of ISTS-connected renewable energy projects, structured as 1,500 MW × 4 hours. It also issued a tender for 1,000 MW of Firm and Dispatchable Renewable Energy on a round-the-clock basis. Together, these procurement models point to a broader shift: renewable projects are increasingly being asked to deliver electricity according to the requirements of the grid and buyers, rather than simply generating power whenever renewable resources are available.

The significance goes beyond individual tenders. Procurement is increasingly asking renewable projects to provide a power product that is closer to the requirements of the grid and the buyer, rather than simply selling whatever renewable electricity is generated at a particular time.

BESS can support this shift by providing peak management, rapid response and greater flexibility. It can also help reduce situations where renewable electricity is available but cannot be absorbed because of the timing of generation, system constraints or operational requirements.

For DISCOMs and large consumers, the value may therefore extend beyond the cost of the battery itself. The relevant question is what the complete system can deliver: predictable power, flexibility and better utilisation of renewable assets and grid infrastructure.

This is where the “game changer” argument needs some caution.

BESS adds another layer of capital expenditure to an already capital-intensive renewable project. Battery degradation, replacement requirements, financing costs and utilisation levels all affect project economics. A battery that is rarely used may not justify its cost; one that is heavily cycled faces greater degradation.

The business model therefore matters as much as the technology.

India has already introduced policy support for BESS. Under the VGF scheme approved in September 2023, 13.22 GWh of BESS capacity is under implementation with a budgetary allocation of INR 3,760 crore. As demand for storage has increased, the Ministry of Power approved another VGF scheme in June 2025 to support 30 GWh of BESS capacity, with INR 5,400 crore of financial support from the Power System Development Fund (PSDF).

Over time, however, projects will need stronger commercial signals beyond capital support. Time-of-day pricing, ancillary-service markets, appropriate storage procurement mechanisms and the ability to combine multiple revenue streams can improve the economics of storage.
There is also a risk of treating BESS as a substitute for everything else the power system needs.

Transmission expansion remains essential, yet grid congestion and execution bottlenecks in transmission infrastructure threaten to curtail renewable flow. As renewable generation concentrates in resource-rich pockets, transmission delays significantly elevate the value of co-located BESS. Storage allows developers to inject power at peak hours, prevent local curtailment and optimise existing grid capacities before critical network upgrades come online. The National Electricity Plan also highlights how higher renewable penetration changes power-flow patterns and makes renewable generation profiles an important consideration in transmission planning.

Long-duration storage requirements may also favour pumped storage in some applications. Thermal generation is likely to continue playing a balancing role during the transition, while different storage technologies will be suited to different durations and system requirements.

The right question, therefore, is not whether BESS can replace every other solution. It is whether it can fill an increasingly important gap between variable renewable generation and the requirement for reliable electricity.

What India Needs Next

For hybrid renewable-plus-storage projects to scale, policy and market design will have to evolve alongside technology.

Developers need clearer long-term procurement signals. Lenders need predictable revenue structures. DISCOMs need bankable contracts. Transmission planning needs to account for the combined behaviour of renewable generation and storage. Regulators need frameworks that recognise storage not simply as a generator or a consumer, but as an asset capable of performing multiple grid functions.

Hybrid renewable energy projects with BESS may therefore become an important building block of India’s power system. But calling them a “game changer” should depend on what happens beyond the project boundary.

If storage can be financed competitively, utilised effectively and supported by appropriate market mechanisms, it can help turn renewable electricity from a largely variable resource into a more flexible and dependable power product.

That would be a meaningful change.

- Kurang Panchal, Managing Director, Rajesh Power Services Ltd.