M/s Brahmaputra Infrastructure Limited declared an L-1 of an total amount Rs. 78.09 Crores announced by the office of the chief Engineer, Pump Storage Project Department, West Bengal State ....

Brahmaputra Infrastructure Ltd. Registered Office: Brahmaputra House, A-7, Mahipalpur (NH 8-Mahipalpur Crossing), New Delhi-110037 Phones: 91-11-42290200 (50 Lines) Fax: 91-11-41687880, 26787068 E-mail: delhi@brahmaputragroup.com web: www.brahmaputragroup.com CIN:L55204DL1998PLC095933 ----------------------------------------------------------------------------------------------------------------------------------------- Date: 20 August 2026 The Manager – Listing Department BSE Limited Phiroze Jeejeebhoy Towers, Dalal Street Mumbai – 400 001 Scrip Code: 535693 Subject: Intimation under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 – Declaration of the Company as L-1 (Lowest Bidder) in respect of a tender valued at Rs. 78.09 Crores Dear Sir/Madam, Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, read with Para A of Part A of Schedule III thereto and the SEBI Master Circular on disclosure of material events, we wish to inform you that Brahmaputra Infrastructure Limited (the "Company" or "BIL") has been declared L-1 (Lowest Bidder) in respect of the tender detailed below. Particulars Details Name of the entity The Chief Engineer, Pumped Storage Project inviting the tender Department (PSPD), West Bengal State Electricity Distribution Company Limited (WBSEDCL) Particulars Details Name of the project Construction of Project Road including Ancillary Structures and Main Access Tunnel (MAT) including Power House Adit for 4 x 250 MW Turga Pumped Storage Project at Baghmundi, District Purulia, West Bengal Project location Baghmundi, District Purulia, West Bengal, India Nature of work Civil construction – project road and ancillary structures, together with underground excavation works comprising the Main Access Tunnel (MAT) and the Power House Adit Whether domestic or Domestic international L-1 quoted value Rs. 78.09 Crores Company’s share in 100% – sole bidder the tender value Period of execution 18 (Eighteen) months from the date of receipt of the Letter of Intent / Letter of Award Whether the promoter, No promoter group or group companies have any interest in the entity inviting the tender Whether the No. The entity inviting the tender is not a transaction falls related party of the Company within the related party category Current status The Company has been declared L-1. The formal Letter of Intent / Letter of Award from the Authority is awaited Nature of the work and its relevance to the Company • The scope of work includes underground excavation works — the Main Access Tunnel (MAT) and the Power House Adit — which provide construction access to the underground power house cavern of the project. • Execution of this package would add hydro-electric tunnelling credentials to the Company’s pre-qualification profile, which is a recognised qualification requirement for tenders in the hydro-power, pumped storage and underground works segments. • The project would mark the Company’s first engagement in the pumped storage hydro-power segment and its first engagement with WBSEDCL, a State power utility. • The project would extend the Company’s operating footprint into West Bengal, in addition to its established presence in the North Eastern region. You are requested to take the above on record. Thanking you, Yours faithfully, For Brahmaputra Infrastructure Limited Raktim Acharjee Whole-Time Director DIN: 06722166 PRESS RELEASE Brahmaputra Infrastructure Limited declared L-1 for Rs. 78.09 Crore tunnelling and access-works package at the 1,000 MW Turga Pumped Storage Project, West Bengal Marks the Company’s entry into the pumped storage hydro-power segment and into West Bengal New Delhi / Guwahati, 20 August 2026 Brahmaputra Infrastructure Limited (BSE: 535693) (NSE : BRAHMINFRA) ("BIL" or "the Company") has been declared L-1 (Lowest Bidder) for the construction of the project road, ancillary structures and the Main Access Tunnel (MAT) including the Power House Adit for the 4 x 250 MW Turga Pumped Storage Project at Baghmundi, District Purulia, West Bengal. The tender has been invited by the Pumped Storage Project Department (PSPD) of West Bengal State Electricity Distribution Company Limited (WBSEDCL). The Company’s quoted value is Rs. 78.09 Crores, with an execution period of 18 months. The formal Letter of Intent / Letter of Award from the Authority is awaited. Package details Awarding authority Chief Engineer, PSPD, WBSEDCL L-1 quoted value Rs. 78.09 Crores Execution period 18 months from Letter of Intent Project capacity 4 x 250 MW (1,000 MW) Location Baghmundi, District Purulia, West Bengal Status Declared L-1; Letter of Intent / Letter of Award awaited Scope of work • Construction of the project road and associated ancillary structures. • Construction of the Main Access Tunnel (MAT) — the primary construction access route for the project’s underground works. • Construction of the Power House Adit, providing access to the underground power house cavern. • Allied civil and infrastructure works at the project site. Why this package matters to BIL • Underground works credentials: the MAT and the Power House Adit are hydro-electric tunnelling works. Execution of this package would add tunnelling experience of the kind that forms a standing pre- qualification requirement in hydro-power, pumped storage, metro and highway tunnel tenders. • New segment: this would be the Company’s first package in the pumped storage hydro-power segment. • New client and new geography: the Company’s first engagement with WBSEDCL, a State power utility, and its first project in West Bengal, extending its footprint beyond its established base in the North Eastern region. • Early-cycle positioning: access works and the MAT are enabling packages on the critical path to the underground power house, placing the contractor on site at an early stage of the project cycle. Management comment Commenting on the development, Mr. Umang Prithani, Joint Managing Director, Brahmaputra Infrastructure Limited, said: “Being declared L-1 on the Turga access and tunnelling package is a meaningful step for us. The Main Access Tunnel and the Power House Adit take us into underground works for a pumped storage scheme — a segment where the qualification bar is high and where credentials are built one package at a time. It also takes us into West Bengal and into a first working relationship with WBSEDCL. We now await the formal award, and our focus will be on mobilising early and executing this package to programme.” About the Turga Pumped Storage Project The Turga Pumped Storage Project is a 1,000 MW closed-loop pumped storage scheme being developed by WBSEDCL at the Ayodhya Hills in Baghmundi block, District Purulia, West Bengal. It comprises an upper and a lower reservoir with an underground power house, and is located near the 900 MW Purulia Pumped Storage Project, which has been in operation since 2007-08. Pumped storage schemes provide grid-scale energy storage and peaking capacity, and support the integration of variable renewable generation. About Brahmaputra Infrastructure Limited Brahmaputra Infrastructure Limited (BSE: 535693) is a BSE and NSE-listed construction and infrastructure company headquartered in New Delhi, with its principal operating base in the North Eastern region of India. The Company executes civil and infrastructure works across roads and highways, bridges, river and flood protection works, and urban infrastructure, for central and state government authorities and public sector undertakings. For further information, please contact: Brahmaputra Infrastructure Limited Mr. Raktim Acharjee – Whole Time Director E-mail: delhi@brahmaputragroup.com | Tel: +91-11-4229 0200 Website: www.brahmaputragroup.com