Ecoren, Bondada, POWERGRID Among Winners of APTRANSCO’s 2,000 MWh BESS Auction
Ecoren Energy, Bondada Engineering, Power Grid Corporation of India (POWERGRID), Bhagwati Group, SBR Electro Projects and Legion Energy Products have emerged as winners in APTRANSCO’s auction to develop standalone BESS projects at seven substations across Andhra Pradesh with a cumulative capacity of 1,000 MW/2,000 MWh.
November 29, 2025. By Mrinmoy Dey
Six developers namely Ecoren Energy, Bondada Engineering, POWERGRID, Bhagwati Group, SBR Electro Projects and Legion Energy Products have emerged as winners.
SBR Electro Projects has secured 25 MW/50 MWh BESS to be connected at Gajuwaka Substation at a tariff of INR 1.48 lakh/MW/month.
Ecoren Energy has bagged a total of 500 MW/1,000 MWh across two substations. While the company has won 275 MW/550 MWh at Talaricheruvu at INR 1.50 lakh/MW/month, it also secured 225 MW/450 MWh at Pampanuruthanda SS at INR 1.65 lakh/MW/month.
Bondada Engineering has secured 225 MW/450 MWh at the Hindupur substation, while Power Grid Corporation of India (PGCIL) picked up 150 MW/300 MWh at Kalikiri, with both quoting a tariff of INR 1.64 lakh/MW/month.
Bhagwati Group has won 75 MW/150 MWh at Maradam SS at a tariff of INR 1.5 lakh/MW/month, while Legion Energy Products won 25 MW/50 MWh at Simhachalam SS at the same tariff.
The tender was issued in August 2025.
The BESS developer must set up, operate and maintain a Battery Energy Storage System (BESS), with the primary objective of making the energy storage facility available to State DISCOMS/ SLDC for charging/discharging of the BESS, on an 'on demand' basis.
The projects must be set up under the build, own, operate (BOO) model and are eligible for viability gap funding (VGF) support capped at INR 18 lakh/MWh, to be disbursed in three tranches.
The land shall be provided through right-of-use basis by APTRANSCO to the developer, at an annual lease charge of INR 1 per acre per year.
Setting up of the BESS and interconnection of the BESS with the State Transmission Utility (STU) network and entire operation and maintenance including safety of the equipment/personnel will be under the scope of the BESSD.
Scheduling of charging and discharging of the system will be under the scope of SLDC/DISCOMS. The State DISCOMS will provide required power for charging BESS.
The BESSD must guarantee a minimum annual average system availability of 95 percent on annual basis.
The bidder is required to design the BESS, ensuring that the BESS can charge and discharge with a C-rate of 0.5. Additionally, the BESS must be capable of being charged or discharged in blocks of either 50 MW/100 MWh or 75 MW/150 MWh. Each BESS block must be operated independently to comply DISCOMS/SLDC instructions.
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