India's long-duration storage pipeline has added another hundred-megawatt-hour-scale vanadium redox flow battery (VRFB) project. Delectrik Systems has been confirmed as the winner of a public tender run by Gujarat Industrial Power Company Limited (GIPCL) for a 20 MW/120 MWh system with six hours of storage duration.
The asset will be deployed at GIPCL's natural gas power plant in Vadodara, Gujarat, and will make use of the existing on-site transmission infrastructure rather than requiring new grid connection works. The project is being delivered under an EPC model and is designed to run roughly 1.5 cycles per day.
Charging and discharging schedule
The operating plan published with the award shows a two-window charging pattern: the battery charges from 01:00 to 05:00 and again from 09:00 to 16:00. Discharge is scheduled into the morning peak between 06:00 and 09:00 and the evening peak between 18:00 and 24:00, smoothing load fluctuations and matching the state's renewable output.
According to Delectrik's founder and CEO, rising renewable penetration is pushing Indian storage demand away from two-hour and four-hour short-duration systems toward six-hour and longer long-duration storage.
Price benchmark: about RMB 1.40 per Wh
Listed infrastructure EPC firm Bondada Engineering Limited (BSE: 543971) announced on 22 October that it had received the formal letter of intent from GIPCL for the EPC plus operations and maintenance contract. The total contract value is INR 239.25 crore, equivalent to roughly RMB 168 million, or about RMB 1.40 per Wh — a useful reference point for six-hour flow battery pricing in the Indian market.
A repeat consortium
Delectrik bid through a consortium model with Bondada Engineering. It is the partners' second successful joint bid: in June 2026 the same pairing won NTPC's 16.7 MW/100 MWh vanadium flow battery project. Delectrik had earlier delivered a 3 MWh flow battery pilot to NTPC in 2024; that unit was installed by mid-2025 and has operated stably since.
Why duration is shifting
India's Central Electricity Authority estimates the country will need about 74 GW/411 GWh of energy storage by 2031–32, spanning utility-scale lithium-ion, pumped hydro and other long-duration technologies. In regions where pumped hydro siting is difficult, flow batteries are expected to become an important complementary solution, and hitting the national storage target will require several technology routes to develop in parallel.
This article was assisted by AI analysis. Please refer to the original source for official information.