Indigrid Infrastructure Trust has informed the Exchange regarding Disclosure of material issue

INDIGRID INVESTMENT MANAGERS LIMITED Date: August 12, 2026 BSE Limited National Stock Exchange of India Ltd Department of Corporate Services Listing Department Phiroze Jeejeebhoy Towers Exchange Plaza, C/1, Block G, Bandra-Kurla Dalal Street, Mumbai — 400 001. Complex, Bandra (East), Mumbai — 400 051. Scrip Code: 540565 Symbol: INDIGRID Subject: Press Release for Q1 FY27 results Dear Sir/ Madam, We hereby enclose the Press Release of IndiGrid Infrastructure Trust for Q1 FY27 results. You are requested to take the same on record. Thanking you, For and on behalf of IndiGrid Investment Managers Limited Representing IndiGrid Infrastructure Trust as its Investment Manager Urmil Shah Company Secretary & Compliance Officer ACS-23423 Copy to- Axis Trustee Services Limited The Ruby, 2nd Floor, SW, 29 Senapati Bapat Marg, Dadar West, Mumbai- 400 028 Maharashtra, India Encl: As above IndiGrid Investment Managers Limited Registered & Corporate Office: Unit No. 101, First Floor, Windsor, Village KoleKalyan, off CST Road, Vidyanagari Marg, Kalina, Santacruz (East), Mumbai – 400 098, Maharashtra, India CIN: U28113MH2010PLC308857 Ph: +91 72084 93885 | Email: complianceofficer@indigrid.com | www.indigrid.co.in For Immediate Release IndiGrid delivers another quarter of strong financial performance. EnerGrid wins two transmission projects. Key Highlights: • Q1 FY27 Operational Revenue and EBITDA grew by 18.9% and 23.6% respectively year-on-year. • EnerGrid won and received LOI for two ISTS projects in Himachal Pradesh with a cumulative capacity of ~550 ckms and ~1,680 MVA and a cumulative capex of ~INR 5,800 crore. • Q1 FY27 DPU declared at ₹4.12 – in line with the full year guidance of ₹16.48 per unit. Mumbai, Wednesday, 12th August 2026: IndiGrid [BSE: 540565 | NSE: INDIGRID], India’s first and largest publicly listed power sector infrastructure investment trust (InvIT), today announced its financial results for the quarter ended June 30, 2026, along with key business updates. Financial Update: Operational revenue for the quarter stood at ₹930 crore, representing a 18.9% year-on-year increase, driven primarily by the the addition of new projects in the portfolio during the last fiscal – through acquisitions as well as commissioning of under-construction projects. This growth translated into EBITDA of ₹860 crore, a margin of 89.1% and year-on-year growth of 23.6%. Reported revenue includes service concession revenue from BOOT (Build-Own-Operate-Transfer) under- construction assets as per the accounting standards. Accordingly, reported revenue for the quarter stood at ₹1,087 crore, a growth of 29.4%, and reported EBITDA was at ₹906 crore, a margin of 80.7% and growth of 28.7%. Net Distributable Cash Flow (NDCF) for the quarter was ₹370 crore, reflecting a year-on-year growth of 29.4% on the back of asset additions over the last one year. As of June 30, 2026, IndiGrid had Assets Under Management (AUM) of ₹34,041 crore, with a Net Debt to AUM ratio of 58.5%. The collections profile across both segments remained healthy, with collections of 95% and 38 receivable days for transmission assets, and 100% and 34 receivable days for solar assets. EnerGrid Update: During the quarter, EnerGrid won and received the LOIs for two Inter-State Transmission projects. These include the Shongtong–Tidong Transmission Scheme, comprising ~450 ckm of transmission lines and a 400/220 kV, 630 MVA substation, and the Transmission System for evacuation of power from Sunni Dam HEP and Luhri Stage-I HEP, comprising ~104 ckm of transmission lines and 1,050 MVA of substation capacity. Both projects were awarded through the TBCB mechanism, are to be developed on BOOT-basis, and will entail a cumulative capex of ~INR 5,800 crore. DPU Update: For the quarter, the Board of the Investment Manager approved a Distribution Per Unit (DPU) guidance of ₹4.12 – in-line with the full year guidance of ₹16.48. Registered & Corporate Office: Unit No. 101, First Floor, Windsor, Village KoleKalyan, off CST Road, Vidyanagari Marg, Kalina, Santacruz (East), Mumbai – 400 098, Maharashtra, India CIN: U28113MH2010PLC308857 The record date for the distribution is August 17, 2026, and the distribution shall be paid as ₹2.6909 per unit as interest, ₹0.0224 per unit as (taxable) dividend, and ₹1.4067 per unit as capital repayment, in accordance with Section 223 of the Income Tax Act, 2025. Commenting on the quarter, Harsh Shah, Managing Director of IndiGrid, said, “We delivered a strong financial performance during the quarter, supported by the resilient nature of our portfolio and disciplined asset management. We also continued to build visibility for future growth, with EnerGrid winning two new inter-state transmission projects and taking its identified project pipeline to over ~₹13,500 crore, providing a clear pathway for deployment of its committed investor capital. India’s peak power demand again crossed 270 GW in July, reinforcing the need to continuously strengthen the country’s power infrastructure. As demand grows and the generation mix evolves, investments in transmission, energy storage and grid flexibility will be critical to building a resilient and sustainable energy system. Through IndiGrid and EnerGrid, we remain focused on contributing meaningfully to this transformation while creating sustainable long-term value for our stakeholders,” Financial Highlights – Consolidated Financials (in ₹ crore): ₹ Crore Q1 FY26 Q1 FY27 % change Reported Revenue 840 1,087 29.4% EBITDA 704 906 28.7% NDCF Generated 286 370 29.4% DPU (₹ per unit) 4.00 4.12 3.0% Note: Reported Financial performance higher than Operational Financial performance due to Service Concession Accounting Revenue Registered & Corporate Office: Unit No. 101, First Floor, Windsor, Village KoleKalyan, off CST Road, Vidyanagari Marg, Kalina, Santacruz (East), Mumbai – 400 098, Maharashtra, India CIN: U28113MH2010PLC308857 About IndiGrid: IndiGrid [BSE: 540565 | NSE: INDIGRID] is the first Infrastructure Investment Trust (“InvIT”) in the Indian power sector. It owns projects consisting of 59 transmission lines with ~10,237 ckms length, 20 substations with ~33,335 MVA transformation capacity, ~1.5 GWp of solar generation capacity, and ~2.5 GWh of Battery Energy Storage Systems. IndiGrid has assets under management (AUM) of over ~₹34,041 crore (~USD 3.5 billion). The investment manager of IndiGrid is wholly owned by KKR. For more details, please visit www.indigrid.co.in Contacts: Media: corpcomm@indigrid.com Investor Relations: investor.relations@indigrid.com Registered & Corporate Office: Unit No. 101, First Floor, Windsor, Village KoleKalyan, off CST Road, Vidyanagari Marg, Kalina, Santacruz (East), Mumbai – 400 098, Maharashtra, India CIN: U28113MH2010PLC308857