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Tata Power: ‘Promising potential’ for energy storage business in India

Existing 100MW Tata Power Solar PV project in Andra Pradesh, India. The newly awarded project in Chhattisgarh will pair the same capacity of solar with 40MW / 120MWh of battery storage. Image: Tata Power Solar.

The need for energy storage solutions in India to enable huge renewable energy growth makes it a promising market, Tata Power has said, after its solar subsidiary was awarded the country’s largest solar-plus-storage project to date. 

At the beginning of December, Tata Power Solar received a Letter of Award (LoA) from the government-owned Solar Energy Corporation of India (SECI), for the INR9.45 billion (US$125 million) project in the central Indian state of Chhattisgarh.

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Tata Power Solar Systems Limited will build a 100MW solar PV plant, colocated with a 120MWh utility-scale battery energy storage system (BESS). Tata Power told that the battery storage will have 40MW output, making it a three-hour duration system.  

The project will be built in a year and a half. Tata Power Solar’s duties include engineering, design, supply, construction, testing, operations and maintenance (O&M) and commissioning.

“We are currently in discussion with many reputed vendors and will declare the same in due course,” Tata Power said in response to an enquiry from as to what sort of third-party technology providers or partners might be brought in to work on the project. 

“The BESS system will be charged from the colocated Solar PV Plant and will be used to cater to the peaking requirement of the off-taker,” the company said.

This will be Tata Power Solar’s second project of this type, with the company — known mostly for commercial and industrial (C&I) rooftop solar EPC activities — already building another solar-plus-storage project combining 50MW of PV and 50MWh of battery storage in Leh, the capital of the union territory of Ladakh. 

Energy storage approaching inflection point

While India’s renewable energy capacity has grown rapidly in the past few years and the country has a target of 500GW of renewables by 2030 set by government policy, battery storage development has so far been limited. 

Tata Power noted that its group company Tata Power DDL, a distribution network company in Delhi, inaugurated the country’s first 10MW / 10MWh grid-scale battery storage system. Tata Power Solar has built many BESS projects for smaller scale applications, both on-grid and off-grid.

However, Tata Power said, “a large-scale installation, [such] as this project, is in limited number for India”. 

There appear to be much bigger things on the horizon however. has reported this year on a number of large government tenders being expected including a 2,000MWh SECI tender. Ministry of Power joint secretary Ghanshyam Prasad stated at an industry event in September that the government is willing to handhold the industry until it is capable of standing on its own two feet. 

At that event, held in honour of World Energy Storage Day, Tata Power CEO Praveer Sinha said that the “story of renewables is not complete without storage,” and that while renewable energy is already huge in India, it would not be long before energy storage arrived at a similar inflection point. 

India is expected to arrive at a 40% renewables target set for 2030 long in advance of that date, being already close to 39% non-fossil fuel powered — equivalent to about 175GW of renewable energy capacity. In June, the national Central Electricity Regulatory Commission said it was drafting rules to enable the participation of energy storage in ancillary services markets.

“Keeping in consideration the country’s potential and commitment to renewable energy, there is a technical need for storage solutions,” Tata Power told this week. 

“Hence, we believe that there is promising potential in the energy storage business in India.”

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