TNGECL Invites Bids for 500 MW/1000 MWh Standalone BESS Projects in Tamil Nadu
Tamil Nadu Green Energy Corporation Ltd. (TNGECL) has issued a tender for setting up 6 grid-connected standalone BESS projects totalling 500 MW/1,000 MWh with VGF support under a tariff-based competitive bidding. Bid submission ends on April 2, 2025.
March 15, 2025. By Mrinmoy Dey
The developers will be selected under the tariff-based competitive bidding method and will be eligible for VGF support. The projects will be set up under ‘BOO’ model.
There are 4 BESS projects proposed in Thirunelveli – 3 projects of 200 MWh capacity each at Thennampatty, Anuppankulam and Ottapidaram substation, and another project of 100 MWh capacity at Kayathar substation. One 200 MWh BESS project is being proposed at the Vellalaviduthi substation in Trichy. The 6th project, with a capacity of 100 MWh, is proposed at Karaikudi substation.
Bidders need to pay INR 15 lakh (plus GST) as a bid processing fee. Further, they need to furnish INR 2 lakh/MW as an earnest money deposit (EMD). Selected bidders need to submit Performance Bank Guarantee (PBG) for a value equivalent to 40 percent of the annual payment due to the developer prior to the signing of BESPA.
The last date for submission of bids is April 2, 2025. The techno-commercial bids will be opened on April 3, 2025.
The minimum bid size shall be 50 MW x 2 hours (100 MWh). Bidders can bid for a maximum of 500 MW/1,000 MWh capacity. A maximum of 50 percent of bid capacity shall be allocated to a single bidder in the tender i.e., a maximum of 250MW/500MWh can be allocated to a single bidder.
For a typical project size of 50 MW/100 MWh, approximately 7000 sqm of land will be allotted to BESSD.
BESSD must set up a Battery Energy Storage System (BESS), with the primary objective of making the energy storage facility available to the buying entity i.e., TNPDCL for charging/discharging of the BESS, on an ‘on demand’ basis.
Setting up of the BESS and interconnection of the BESS with the STU network will be under the scope of the BESSD. The BESS shall be charged by drawing power from TNPDCL and injecting power to the TNPDCL network in accordance with the dispatch instructions issued by SLDC. TNPDCL will provide the required power for charging BESS considering minimum system efficiency under the agreement.
The bidder must ensure that the BESS can charge and discharge with a Crate of 0.5. Additionally, the BESS must be capable of being charged or discharged in groups from 50 MW/100 MWh to 100 MW/200 MWh, up to the total rated capacity specified in the Agreement. The BESSD must guarantee a minimum system availability of 95% on an annual basis.
The tender proposed to promote only commercially established and operational technologies to minimise the technology risk and to achieve timely commissioning of the projects.
The net worth of the bidder must be at least INR 40 lakh/MWh of the quoted capacity (in MWh), as on the last date of the previous financial year or as on the day at least 7 days prior to the bid submission deadline.
The bidder must possess a minimum average annual turnover of INR 50 lakh/MW of the quoted capacity during the previous 3 financial years prior to the bid submission deadline.
Additionally, the bidder must demonstrate internal resource generation capability, in the form of Profit Before Depreciation Interest and Taxes (PBDIT) excluding other and exceptional income for a minimum amount of INR 5.38 lakh/MW of the quoted capacity, as on the last date of the previous financial year or as on the day at least 7 days prior to the bid submission deadline.
please contact: contact@energetica-india.net.
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