NTPC REL Launches 100 MWh Vanadium Redox Flow BESS Tender

NTPC Renewable Energy Limited (NTPC REL), a subsidiary of NTPC Limited, has launched a major tender for the development of a 16.7 MW / 100 MWh Battery Energy Storage System (BESS) at Khavda Solar Park. The tender invites bids for an Engineering, Procurement, and Construction (EPC) package to set up a Vanadium Redox Flow battery system, supporting India’s growing renewable energy capacity.

Bids are invited via a single-stage, two-envelope system, with technical and financial proposals submitted separately. Only technically qualified bidders will have their financial proposals evaluated.

Tender Overview

Tender Title: Development of 16.7 MW / 100 MWh Vanadium Redox Flow BESS at Khavda Solar Park
Total BESS Capacity: 16.7 MW / 100 MWh
Technology: Vanadium Redox Flow Battery
Bidding Route: EPC, Single-Stage Two-Envelope System
Issuing Authority: NTPC Renewable Energy Limited (NTPC REL)
Tender Notice Released: 18 November 2025
Bidding Documents Available From: 20 May 2025 (government & NTPC tender portals)

Project Locations

Location: Khavda Solar Park, Gujarat
Grid Connection: Integrated with 33 kV pooling substation for smooth evacuation and coordination

Technical Specifications

System Architecture: Turnkey EPC delivery including design, engineering, supply, construction, installation, testing, and commissioning

Key Components:

Battery Management System
Energy Management System (EMS)
Power Conversion System (PCS)
Civil and electrical works
Firefighting and auxiliary power systems

Performance Requirements:

Designed for 25-year operational life
Contractor to provide 10 years of Operation & Maintenance
Limits on annual degradation
Compliance with round-trip efficiency standards
Environmental Considerations: System designed for high temperature and corrosive conditions

Key Dates & Bid Conditions

Tender Notice Date: 18 November 2025
Bidding Documents Available From: 20 May 2025
Bidding Process: Single-Stage Two-Envelope (technical evaluation followed by financial evaluation of qualified bidders)

Eligibility & Requirements

Open to global and domestic EPC contractors
Contractors must meet technical and financial qualification criteria
Turnkey delivery capability required, including long-term O&M services

Project Significance

The Khavda BESS project strengthens India’s renewable energy sector by providing long-duration, high-capacity storage, critical for managing solar variability and ensuring grid stability. The initiative highlights NTPC REL’s focus on advanced energy storage solutions and sustainable energy infrastructure development.