- Storage, transmission investments accelerate to reduce renewable curtailment
- Jul’26 sees several large-scale BESS tenders along with capacity investments
India’s renewable energy sector continues to expand at an unprecedented pace, but the defining challenge of the energy transition is rapidly shifting. The question is no longer whether the country can add enough solar and wind capacity — it is whether the electricity system can absorb, transport and utilise that growing supply efficiently.
The latest monthly renewable energy data reinforces this structural shift. India added 5.1 GW of solar capacity and 636 MW of wind capacity in June 2026, taking cumulative renewable energy capacity to 288 GW, of which solar now accounts for 56%. Solar additions increased nearly 45% m-o-m, while wind installations rose almost 72%, reflecting the accelerating pace of project commissioning.
Yet July also highlighted a growing paradox. Renewable electricity generation continued to rise, but so did renewable energy curtailment, underlining that India’s next bottleneck is increasingly one of grid flexibility rather than generation capacity.
Capacity growth remains exceptionally strong
India’s renewable build-out continues to be led overwhelmingly by solar power.
Utility-scale projects remain the principal growth driver, while residential rooftop installations under the PM Surya Ghar Yojana are gathering momentum. Approximately 1,592 MW of residential rooftop capacity was installed during July, with Uttar Pradesh, Maharashtra and Gujarat emerging as the leading states. Nearly 5 million households have now been covered under the programme.
Project development also remains robust. During July, authorities issued over 1.1 GW of new renewable project development tenders alongside 1.12 GW/2.58 GWh of standalone battery energy storage tenders, while EPC tenders exceeded 877 MW. Significantly, standalone battery storage dominated tendering activity, signalling a growing recognition that storage is becoming an essential component of India’s renewable expansion rather than an optional add-on.
This trend reflects a broader evolution in procurement strategy. Increasingly, tenders are combining renewable generation with battery storage systems, floating solar, firm and dispatchable renewable energy (FDRE), and hybrid projects instead of pursuing standalone generation assets.
The challenge is no longer generation — it’s utilisation
The most important development during July was not the pace of capacity addition but what happened after renewable electricity was generated.
Renewable energy generation reached 34,815 million units (MUs) during July, around 3.5% higher than June. Wind generation surged 27% m-o-m as monsoon conditions strengthened, although solar output declined around 15% due to seasonal cloud cover.
At the same time, renewable curtailment increased sharply.
According to the report, 1,166.5 MUs of renewable electricity was curtailed during July, equivalent to 3.3% of renewable generation. Solar accounted for 939 MUs of curtailed energy, while wind contributed 227 MUs. On average, around 4.4 GW of solar and 2 GW of wind capacity were curtailed daily. The report attributes the increase primarily to stronger monsoon-driven wind generation coinciding with relatively subdued electricity demand.
These figures reinforce an increasingly important reality.
India’s renewable challenge is gradually shifting from “How do we build more renewable capacity?” to “How do we use every renewable unit that has already been generated?”
Recent analyses have similarly highlighted that the next phase of India’s clean-energy transition depends less on installing additional solar panels and more on strengthening storage, transmission infrastructure and grid flexibility to absorb growing renewable output.
Storage moves to the centre of energy transition
The growing prominence of battery energy storage across recent tenders suggests policymakers are already responding to this challenge.
July witnessed several large-scale BESS tenders, including projects by MPPMCL (MP Power Management Company Ltd), SECI (Solar Energy Corporation of India), POWERGRID (Power Grid Corporation of India Ltd) and SJVN (Power Grid Corporation of India Limited), with standalone storage accounting for much of the month’s tendering activity.
Storage is becoming increasingly valuable because India’s renewable generation profile does not coincide perfectly with electricity demand.
Solar generation peaks during the afternoon, while electricity demand increasingly remains elevated into the evening as residential and commercial cooling loads continue after sunset. Without sufficient storage or transmission capacity, surplus daytime solar generation must either be curtailed or exported to regions with available demand.
The rapid growth of battery storage procurement therefore represents a natural progression of India’s renewable strategy — from maximising installed capacity towards maximising renewable utilisation.
Investment trends support the next phase
Investor activity also reflects confidence that India’s renewable sector is entering a more sophisticated stage of development.
During July, renewable energy investments totalled approximately $2.71 billion, including Aditya Birla Renewables’ $1.8 billion acquisition of Sprng Energy and significant financing for hybrid, storage and transmission projects.
Notably, POWERGRID secured $552 million for the Khavda-Nagpur HVDC transmission corridor, highlighting the growing importance of transmission infrastructure in integrating renewable generation.
The increasing flow of capital into storage, hybrid projects, and transmission indicates that investors are looking beyond generation assets towards the infrastructure needed to support a renewable-dominated electricity system.
BigMint Insight
India’s renewable energy story is entering a distinctly different phase.
For much of the past decade, success was measured by the number of gigawatts installed. Today, that metric alone is becoming insufficient.
July’s data shows that renewable capacity additions remain exceptionally strong, investment continues to accelerate, and project pipelines remain healthy. Yet rising renewable curtailment demonstrates that the limiting factor is increasingly the electricity system’s ability to integrate variable generation rather than produce it.
The next stage of India’s energy transition will therefore be defined less by solar module manufacturing or renewable capacity additions and more by investments in battery storage, transmission networks, flexible thermal generation, demand-side management and market mechanisms capable of matching renewable supply with electricity demand.
In other words, India has largely demonstrated that it can build renewable capacity at scale. The bigger challenge now is ensuring that every renewable unit generated can actually reach consumers when and where it is needed. That transition — from capacity expansion to system optimisation — is likely to define the country’s power sector over the remainder of this decade.
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