India’s renewable energy sector has achieved remarkable growth over the past decade. Solar and wind power have transformed the country’s energy landscape, helping reduce dependence on fossil fuels while supporting climate commitments. Yet as renewable energy penetration increases, a critical challenge is becoming impossible to ignore: reliability.
Renewable energy generation is inherently variable. Solar power is available only during daylight hours, while wind generation depends on weather conditions. Businesses, industries, and households, however, require electricity around the clock. This gap between renewable generation and energy demand has made Round-the-Clock (RTC) renewable energy one of the most important priorities for India’s energy transition.
The key enabler of RTC renewable power is Battery Energy Storage Systems (BESS).
India has set an ambitious target of achieving 500 GW of non-fossil fuel capacity by 2030. According to the Central Electricity Authority (CEA), the country will require approximately 60.63 GW of energy storage capacity and over 336 GWh of storage energy by the end of the decade to support this transition. Of this, nearly 42 GW is expected to come from battery energy storage systems.
The reason is simple. Batteries allow excess solar energy generated during the day to be stored and used later when demand remains high but renewable generation declines. This transforms renewable energy from an intermittent resource into a dispatchable one.
The importance of RTC energy becomes even more evident when examining India’s growing electricity demand. Peak power demand crossed 250 GW in 2025 and is expected to rise significantly as industrialization, electrification, and urbanization accelerate. Traditional thermal power plants have historically provided flexibility to meet these peaks. However, achieving India’s long-term decarbonization goals requires cleaner alternatives capable of delivering similar reliability.
Battery storage offers precisely that capability.
By storing surplus renewable energy, BESS helps address one of the biggest concerns surrounding solar and wind power: intermittency. Storage systems can supply electricity during evening peak demand, support frequency regulation, improve voltage stability, and provide backup power during outages.
Importantly, the economics of battery storage are becoming increasingly attractive. Recent competitive bidding by government agencies has revealed significant declines in storage tariffs, with some projects achieving rates between ₹2.1 and ₹2.8 per kWh for storage services. Globally, lithium-ion battery costs have fallen by more than 80% over the last decade, making storage increasingly viable for both utility-scale and commercial applications.
For businesses, RTC renewable energy offers benefits beyond sustainability. It provides energy security, reduces exposure to volatile electricity prices, lowers reliance on diesel generators, and supports ESG commitments. Commercial and industrial consumers can use storage to optimize energy consumption, reduce peak demand charges, and maximize the value of their solar investments.
Government policy is also accelerating adoption. Initiatives such as viability gap funding for storage projects, battery manufacturing incentives, and dedicated energy storage procurement targets are helping create a favorable ecosystem for deployment.
The future of renewable energy will not be determined solely by how much solar or wind capacity is installed. It will depend on how effectively that energy can be stored, managed, and delivered when needed. As India progresses toward a cleaner energy future, battery storage will become a critical pillar supporting reliable and affordable power.
Solar power initiated India’s renewable revolution. Battery storage is what will make that revolution available 24 hours a day.
