[KOCHI, INDIA] – Cochin Shipyard Limited (CSL), a Central Public Sector Enterprise (CPSE) under the Ministry of Ports, Shipping and Waterways, has officially issued Tender No. U&M/MRS/T/003/26-27 inviting competitive turnkey bids for the design, supply, installation, testing, and commissioning of a grid-connected Battery Energy Storage System (BESS). The project specifies a system capacity of 10 MW / 20 MWh and carries an estimated Probable Amount of Contract (PAC) of ₹34.29 crore (inclusive of GST). Located at CSL’s main industrial facility in Kochi (Ernakulam), Kerala, the tender was issued on September 15, 2026, with completed bids due by October 13, 2026, at 2:00 PM.
Technical Scope and Turnkey Execution Requirements
The contract will be awarded on a complete turnkey basis to deliver a fully functional 10 MW / 20 MWh grid-connected BESS. Key technical parameters and contractor requirements include:
- System Specifications: A grid-connected Battery Energy Storage System with a power capacity of 10 MW and an energy storage capacity of 20 MWh.
- Turnkey Basis Definition: Complete end-to-end contractor responsibility encompassing integrated engineering, equipment procurement and supply, site installation, rigorous system testing, and final operational commissioning.
- Execution Timeline: The contractor must complete the entire project within 300 days following an initial 7-day mobilization period after the contract award.
- Pre-Bid Site Survey Requirement: Prospective contractors are required to perform a mandatory preliminary site study at the Kochi facility prior to submitting bids to evaluate existing site conditions. CSL explicitly mandates that no separate expenses will be reimbursed for site assessment requirements, and bidders must factor all associated costs into their quoted prices.
Bid Details, Timeline, and Submission Criteria
The tender operates under a standard two-bid system comprising separate technical and commercial evaluations. Key administrative, financial, and procedural details are summarized below:
| Parameter / Event | Details |
| Tender Reference Number | U&M/MRS/T/003/26-27 |
| Tender Issuance Date | September 15, 2026 |
| Probable Amount of Contract (PAC) | ₹34.29 Crore (incl. GST) |
| Earnest Money Deposit (EMD) | ₹32.50 Lakh |
| Performance Bank Guarantee (PBG) | 3% to 5% of contract value |
| Pre-Bid Meeting & Site Study | September 29, 2026, at 10:30 AM (CSL Premises) |
| Bid Submission Deadline | October 13, 2026, by 2:00 PM |
| Bid Opening Date & Time | October 14, 2026, at 2:30 PM |
| Submission Platform | Online GePNIC portal |
| Bidding System | Two-bid system (Technical & Commercial) |
- Designated Officer-in-Charge: Subha Gopinath, AGM (U&M-El), has been designated as the officer-in-charge handling all technical and commercial queries regarding the tender process.
- Earnest Money Deposit (EMD): Bidders must furnish an EMD of ₹32.50 lakh as part of their tender submission.
- Performance Guarantee: The successful contractor must submit a Performance Bank Guarantee (PBG) ranging between 3% and 5% of the total contract value following the contract award.
- Submission Criteria: Bids must be submitted electronically via the online GePNIC portal prior to the deadline on October 13, 2026, at 2:00 PM, followed by technical bid opening on October 14, 2026, at 2:30 PM.
Project Location and Operational Decarbonization Context
The deployment of the 10 MW / 20 MWh battery storage project forms a central component of CSL’s broader operational sustainability strategy at its primary shipyard facility in Kochi, Kerala. Contextual details established in CSL’s Business Responsibility and Sustainability Report (BRSR) include:
- Phased Implementation: CSL is executing its utility-scale energy storage program in phased stages, with Phase 1 targeted for completion by December 2027.
- Green Energy Target: Upon full commissioning, the BESS facility is projected to enable CSL to cover approximately 60%–70% of its total operational energy requirements through green energy sources.
- Strategic Shift from Wind-Solar Hybrid: The utility-scale BESS strategy officially replaces a previously planned 14 MW wind-solar hybrid plant. The hybrid project was shelved due to land availability constraints, high capital expenditures, and lower-than-required wind speeds that adversely impacted the projected Capacity Utilization Factor (CUF).
- Complementary Renewable Infrastructure: The energy storage system will operate alongside CSL’s expanding solar footprint. CSL is concurrently executing plans to scale up its installed rooftop solar capacity from 2,422 kWp to 4,000 kWp by December 2028.
Official Tender & Bidding Access Details
Bidders can access, review, and submit bids for the Cochin Shipyard Battery Energy Storage System (BESS) tender through the official government e-procurement platform using the reference numbers below:
- Official Bidding Platform: GePNIC Portal (Government e-Procurement System)
- Tender ID:
2026_CSL_290903_1 - Tender Reference Number:
UM/MRS/T/003/26-27 - Official Corporate Website: www.cochinshipyard.in

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