Key Findings
The Central Electricity Authority (CEA) of India has put forth a proposal to mandate the integration of energy storage systems, equivalent to at least 10% of project capacity, for all new ground-mounted solar and onshore wind power projects commissioned after July 2027. Further strengthening this commitment, the CEA plans to extend the mandatory storage duration from the current two hours to four hours for projects operational from July 2029. This progressive policy indicates a significant pivot in India’s energy strategy, underscoring a growing recognition and active discussion around long-duration energy storage (LDES) technologies among developers and buyers, moving beyond the traditional emphasis on short-term grid stability.
Technical / Clinical Details
Currently, India’s grid-scale storage market predominantly focuses on providing short-duration firm capacity, typically less than two hours. The proposed mandate, however, reflects a crucial understanding of the need for extended energy storage to enhance grid stability and effectively integrate larger proportions of intermittent renewable energy. Specifically, new solar and wind projects will be required to store a portion of their generated power for a minimum of four hours, capable of dispatching it when needed. This capability is vital for ensuring stable power supply during periods of low renewable output, such as night-time for solar or calm conditions for wind farms.
This policy change is expected to accelerate investment in LDES technologies beyond conventional lithium-ion batteries. Solutions like flow batteries, compressed air energy storage (CAES), molten salt storage, and iron-air batteries, which offer lower costs for longer discharge durations, are likely to gain significant traction. These LDES technologies can store energy for several hours to multiple days, providing essential flexibility to grid operations as the share of renewable energy continues to grow within India’s power mix.
Background & Context
India is experiencing a rapid increase in electricity demand driven by robust economic growth and a burgeoning population. Concurrently, the nation is aggressively pursuing renewable energy targets as part of its climate change commitments and energy security strategy. However, the inherent variability of renewable sources poses significant challenges for grid stability and reliable power delivery. While short-duration storage has addressed immediate frequency regulation and peaking power needs, the increasing penetration of renewables necessitates more extensive, longer-duration storage solutions to ensure continuous and balanced power supply. The CEA’s proposal signifies a strategic shift to adapt to these evolving grid requirements and future-proof India’s power infrastructure.
Strategic Significance & Outlook
If implemented, this mandate will position India as one of the largest LDES markets globally, fostering rapid development and deployment of LDES technologies and potentially driving down their costs. Developers and investors will likely explore a wider array of long-duration storage technologies beyond lithium-ion, seeking opportunities in the Indian market. The success of LDES widespread adoption will, however, depend on technological maturity, cost competitiveness, and the establishment of local supply chains. India’s proactive stance could serve as a model for other developing nations grappling with similar challenges in renewable energy integration and grid stabilization, paving the way for a more resilient and sustainable global energy landscape.
Get our weekly technology intelligence — free
Receive an infographic that lets you judge at a glance whether each field’s analysis report is worth reading.
Subscribe Free — Weekly Tech Intelligence
By subscribing, you’ll receive Troy-Technical’s weekly technology intelligence newsletter.
- Your email and selected fields are used only to deliver the newsletter.
- We never share your information with third parties.
- You can unsubscribe anytime via the link in each email.
See our Privacy Policy for details.
Takes about a minute · Unsubscribe anytime
Comments