- India’s rooftop solar capacity reached 30.7 GW in July 2026, increasing the need for better grid management and flexibility.
- Kerala and Maharashtra are exploring battery energy storage to manage fluctuations in solar power generation.
- Uttar Pradesh has issued a tender for battery storage alongside rooftop solar installations on government buildings.
- Battery storage can help retain surplus daytime solar electricity for use during evening demand peaks.
- The developments highlight the growing role of energy storage in supporting India’s renewable energy transition.
India’s rapid expansion of rooftop solar is bringing greater attention to the challenges of balancing electricity supply and demand. As more households and institutions generate solar power during daylight hours, distribution networks must manage changing power flows and accommodate periods when solar generation exceeds local demand. The growing adoption of rooftop systems is therefore increasing the need for grid flexibility and solutions that can make renewable electricity available when it is needed.
Kerala and Maharashtra are exploring battery energy storage systems to address these challenges. Batteries can store surplus solar electricity generated during the day and discharge it during evening demand peaks, when solar output falls. This can help improve the use of locally generated renewable energy and reduce pressure on distribution networks. The effectiveness of these systems will depend on their size, location, operating arrangements and cost.
Uttar Pradesh is also moving forward with plans to combine rooftop solar installations with battery storage on government buildings. This approach could allow public facilities to use more of their own solar generation beyond daylight hours while providing a model for integrating storage into distributed energy projects. Such installations can also help demonstrate how solar generation and storage may work together to improve energy management at the building level.
The Central Electricity Authority has suggested that distribution companies consider requiring two hours of battery storage alongside rooftop solar installations. This reflects growing attention to the need for storage as distributed solar capacity increases. However, the recommendation should not be treated as an approved nationwide requirement. Any implementation would depend on subsequent decisions by the relevant authorities and distribution companies.
Battery storage is becoming an important part of planning for a power system with a higher share of renewable energy. By shifting some solar electricity from periods of high generation to periods of greater demand, storage can help address timing mismatches and improve the flexibility of electricity networks. Wider deployment will still depend on investment costs, battery availability, project economics and suitable grid infrastructure.
For electricity distributors, commercial property owners and businesses investing in rooftop solar, these developments make storage capacity and energy management important considerations. Combining solar installations with batteries may improve the use of self-generated electricity and provide greater control over when power is consumed, although the financial benefits will vary by site and electricity tariff.
For businesses investing in rooftop solar or evaluating battery storage, the shift toward more flexible energy systems brings new considerations around energy costs, storage capacity and decarbonization planning. Cognitud’s work across energy transition, climate action and sustainable infrastructure aligns with these priorities, helping organisations assess renewable energy options in the context of their operational needs and environmental goals.
