NTPC Tenders EPC Package for Battery Energy Storage Systems (BESS) at Nine Thermal Stations

New Delhi: NTPC Limited, a Government of India Enterprise, has invited online bids for an EPC (Engineering, Procurement, and Construction) Package for BESS Implementation at nine of its thermal power stations under Lot-2. This domestic competitive bidding process aims to integrate a substantial 2,670 MWh of Battery Energy Storage Systems into the national grid infrastructure.

The tender is being conducted on a Single Stage Two Envelope Basis (Techno-Commercial and Price) and is exclusively open to Class-I and Class-II Local Suppliers.

 

Project Scope and Stations

The BESS implementation covers nine thermal power stations, with individual capacities ranging from 100 MWh to 1000 MWh. The largest single component is 1000 MWh at the Barauni Thermal Power Station.

Scope of Work

The selected EPC contractor will be responsible for the complete BESS Implementation, including its interconnection with the existing thermal power facilities. Crucially, the contract also requires a Comprehensive Annual Maintenance Contract (CAMC) for the BESS system for its entire design life.

The BESS equipment covered in the scope includes:

• Battery System and Battery Management System (BMS)

• Energy Management System (EMS) and SCADA

• Power Conversion System (PCS) and Inverter Duty Transformer (IDT)

• 33 kV pooling switchgear, protection, communication, fire fighting, and all associated HT & LT systems necessary for trouble-free operation.

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Qualifying Requirements (QR) Summary

The tender has stringent qualifying requirements to ensure technical competence and financial capacity, with financing for the package intended to be a mix of debt and equity.

1. Technical Criteria (Meet at least ONE of the following):

Bidders must demonstrate prior experience in BESS, Renewable Energy, or large-scale industrial projects. A few key options include:

• BESS Experience (Supply/Manufacturing): Manufacturing and supply of Batteries of minimum 20 MWh cumulative capacity for grid-interactive BESS, with at least one reference site of 5 MWh successfully commissioned at least six months prior.

• BESS Experience (EPC): Supply, installation, and commissioning of grid-interactive BESS of minimum 20 MWh cumulative installed capacity, with one reference site of 5 MWh successfully commissioned at least six months prior.

• Renewable Energy EPC: Executing Solar Photo Voltaic (SPV)/Wind-based grid-connected power plant(s) of cumulative capacity of 40 MWAC or higher, with one reference plant of 10 MWAC or higher in successful operation for at least six months prior.

• Industrial Project EPC: Execution of industrial projects (Power/Steel/Oil & Gas/etc.) with a total value of rs. 375 Crores or more (with one project value of rs. 150 Crores or more) AND execution of at least one 33 kV Electrical Sub-station.

• Collaboration: A bidder meeting the industrial project value can collaborate or associate with a Battery manufacturer meeting the BESS supply/manufacturing criteria.

2. Financial Criteria

Financial eligibility is calculated based on the specific project(s) bid for, and aggregation is allowed for multiple projects if awarded:

• Average Annual Turnover (AAT): The required AAT during the preceding three financial years must not be less than the amount specified for the respective project (e.g., rs. 964 Crores for Barauni). Holding Company support is permitted under certain conditions.

• Net Worth: The bidder's Net Worth must be at least 100% of its paid-up share capital as of the last day of the preceding financial year. Holding/Subsidiary support is allowed if the combined Net Worth is 100% of the total paid-up share capital, and individual Net Worth is at least 75% of respective paid-up share capital.

 

Bidding Schedule

• Bid Receipt Last Date & Time (Techno–Commercial & Price): December 5, 2025, up to 13:00 Hrs (IST).

• Techno-Commercial Bid Opening Date & Time: December 5, 2025, at 15:00 Hrs (IST).

• Bid Security: Bidders must submit a Bid Security ranging from rs. 2 Crores up to rs. 50 Crores, based on the declared 'Interest Capacity (in MWh)' they are bidding for (rs. 50 Crores for the full 2,670 MWh scope).

NTPC reserves the right to reject any or all bids or cancel the IFB without assigning any reason.