Kalai II Hydropower Project: Coffer Dam, Road, and Diversion Tunnel Construction in Arunachal Pradesh

Work Description - Package Ii Construction Of Coffer Dam Us And Ds Stage I Road Tunnel And Civil And Hm Works Of Di Tunnel For Kalai Ii Hep 1200 Mw Ap

THDC India Limited, a Central Government undertaking, invites sealed online bids for Tender Reference Number THDCIL/NCR/CC-538, an Open Tender for "Package II Construction of Coffer Dam US and DS Stage I Road Tunnel and Civil and HM works of Diversion Tunnel for Kalai II HEP 1200 MW AP". This significant project falls under Construction Works and is situated in Hawai, Arunachal Pradesh. This extensive civil engineering undertaking encompasses the critical construction of coffer dams, a Stage I road tunnel, and various civil and hydro-mechanical works for the diversion tunnel of the 1200 MW Kalai II Hydro Electric Project. The anticipated period of work for this project is 945 days, with bids remaining valid for 180 days from the bid opening date. A non-refundable Tender Fee of ₹50,000 and an Earnest Money Deposit (EMD) of ₹10,00,00,000 are required. Both the Tender Fee and EMD are payable to THDC India Limited, at Rishikesh. Acceptable modes of payment include Demand Draft, RTGS, NEFT, and Bank Guarantee, as specified in the tender documents. The bidding process involves a two-cover system. Cover 1 is designated for Fee/Pre-Qualification and Technical bids, requiring the submission of all documents pertinent to technical and qualifying requirements, alongside scanned copies of the Tender Fee and EMD. Cover 2 is reserved for financial proposals, including price schedules and grand summaries. All necessary documents for both covers must be submitted as per the detailed instructions in the tender document. Key dates for this tender include its e-publication on 27-Dec-2025 at 06:00 PM. Document download and bid submission will commence simultaneously from 27-Dec-2025 at 06:00 PM. A pre-bid meeting is scheduled for 12-Jan-2026 at 11:00 AM at THDCIL Corporate Office, Rishikesh, with clarification queries accepted until the same date and time. The deadline for document download and bid submission is 13-Aug-2026 at 03:00 PM, followed by the bid opening on 14-Aug-2026 at 03:00 PM at the THDCIL NCR office, Kaushambi. Interested and eligible bidders are strongly encouraged to participate. For further details, prospective bidders may contact the GM Contract NCR office, Kaushambi.