Bagging/Receiving of orders/contracts

DIAMOND POWER INFRASTRUCTURE LIMITED September 3, 2026 To, To, The Manager – Listing Department The Manager – Listing Department BSE Limited National Stock Exchange of India Ltd. Phiroze Jeejeebhoy Towers, Exchange Plaza, C-1, Block G, BKC, Dalal Street, Mumbai – 400 001 Bandra (East), Mumbai – 400 051 Scrip Code: 522163 Symbol: DIACABS Sub.: Intimation under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 – Receipt of a Letter of Acceptance for supply of 66 kV Extra High Voltage power cables Dear Sir/Madam, Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“Listing Regulations”), read with SEBI Master Circular on compliance with the provisions of the Listing Regulations by listed entities, we wish to inform you that Diamond Power Infrastructure Limited (“the Company”) has received a Letter of Acceptance dated 3rd September, 2026 from a domestic EPC contractor for the supply of 66 kV Extra High Voltage (EHV) underground power cables for a 66 kV transmission project in the State of Gujarat. The details required under Regulation 30 of the Listing Regulations, read with the applicable SEBI Circular, are enclosed as Annexure A. A copy of the Press Release being issued by the Company in this regard is enclosed as Annexure B. This intimation is also being made available on the website of the Company at www.dicabs.com. You are requested to kindly take the above on record. Thanking you, Yours faithfully, For Diamond Power Infrastructure Limited Jayesh Patel Company Secretary ICSI M. No.: A14898 Encl.: Annexure A – Disclosure under Regulation 30; Annexure B – Press Release Regd. Office & Factory: Vadadala, Phase – II Savli, Vadodara, Gujarat, India-391520 CIN: L31300GJ1992PLC018198 Email: cs@dicabs.com, Website: www.dicabs.com Tel No.- 02667-251354/251516 Fax No.-02267-251202 DIAMOND POWER INFRASTRUCTURE LIMITED Annexure A Disclosure of details under Regulation 30 of the Listing Regulations read with the applicable SEBI Circular – Award / Receipt of Order Sr. Particulars Details 1 Name of the entity awarding A domestic private-sector EPC contractor engaged in power the order / contract transmission projects. The name of the counterparty is not disclosed on account of confidentiality obligations under the Letter of Acceptance. 2 Nature of the order / contract Supply of 38/66 kV (E), 1 core, 630 sq. mm. aluminium conductor, XLPE insulated, copper wire screened, aluminium corrugated sheathed, HDPE outer sheathed underground power cables, on FOR site basis, for a 66 kV transmission project in Gujarat. 3 Whether order / contract Domestic awarded by domestic or international entity 4 Broad consideration / size of ₹76,05,89,060/- (Rupees Seventy-Six Crore Five Lakh the order Eighty-Nine Thousand and Sixty Only), including GST. The order is on a variable-price basis; final realisation will be as per the price variation formula applicable to the order. 5 Scope / quantity Supply of 38/66 kV (E), 1 core, 630 sq. mm. aluminium conductor, XLPE insulated, copper wire screened, aluminium corrugated sheathed, HDPE outer sheathed underground power cables, on FOR site basis, for a 66 kV transmission project in Gujarat. 6 Time period by which the Deliveries to commence upon manufacturing clearance, at a order / contract is to be scheduled rate of approximately 50 km per month, to be executed advanced in line with project requirements. 7 Whether the promoter / No. promoter group / group The order has been received in the ordinary course of companies have any interest in business and at arm’s length. the entity that awarded the order / contract; if yes, nature of interest and details thereof 8 Whether the same would fall No. within related party The transaction does not fall within related party transactions; if yes, whether transactions. at arm’s length Regd. Office & Factory: Vadadala, Phase – II Savli, Vadodara, Gujarat, India-391520 CIN: L31300GJ1992PLC018198 Email: cs@dicabs.com, Website: www.dicabs.com Tel No.- 02667-251354/251516 Fax No.-02267-251202 DIAMOND POWER INFRASTRUCTURE LIMITED Annexure B PRESS RELEASE Diamond Power Infrastructure secures ₹ 76.06 crore order for 66 kV EHV underground cables Order covers approximately 293 km of 66 kV, 1C x 630 sq. mm. cable for a transmission project in Gujarat; reinforces DICABS’ position in the high-value Extra High Voltage segment Vadodara, 3rd September 2026 — Diamond Power Infrastructure Limited (BSE: 522163 | NSE: DIACABS), one of India’s integrated manufacturers of power cables and conductors under the DICABS brand, today announced that it has received a Letter of Acceptance for the supply of 66 kV Extra High Voltage (EHV) underground power cables valued at approximately Rs. 64.46 crore, excluding GST. The order has been placed by a domestic EPC contractor executing a 66 kV transmission project in Gujarat, and covers the supply of 2,92,985 metres – approximately 293 kilometres – of 38/66 kV (E), 1 core, 630 sq. mm. aluminium conductor, XLPE insulated, copper wire screened, aluminium corrugated sheathed, HDPE outer sheathed underground power cable, delivered on an FOR site basis. Deliveries are scheduled at approximately 50 km per month from manufacturing clearance, and the Company will look to advance this schedule in line with project requirements. The award is a further endorsement of the Company’s Extra High Voltage manufacturing capability. Cables at 66 kV and above are among the most technically demanding products in the sector, requiring triple-extrusion CCV lines, corrugated metallic sheathing and an approved type-test pedigree – capabilities that only a small number of Indian manufacturers possess. The segment also carries among the highest realisations and margins in the Company’s cables portfolio. India’s transmission build-out is driving sustained demand for EHV underground cabling, as utilities and developers move to underground corridors in urban and industrial load centres and connect large renewable generation clusters to the grid. The Company has been scaling its MV and EHV capacity to capture this demand, including additional CCV and corrugation lines being commissioned as part of its ongoing capital expenditure programme. Commenting on the order, Mr. Umesh Chhayya, Whole-time Director, Diamond Power Infrastructure Limited, said: “This order reflects the confidence that project developers and EPC partners place in our EHV cable capability. Extra High Voltage is the segment where our investments in technology, testing and quality show up most clearly, and it is central to how we intend to grow. Our order book continues to build across utilities, renewables, data centres and industrial customers, and we remain focused on executing to schedule.” About Diamond Power Infrastructure Ltd Diamond Power Infrastructure Limited (DICABS) is an integrated manufacturer of power transmission equipment, offering LV, MV, HV and EHV power cables, control and instrumentation cables, fire-resistant and flame-retardant Regd. Office & Factory: Vadadala, Phase – II Savli, Vadodara, Gujarat, India-391520 CIN: L31300GJ1992PLC018198 Email: cs@dicabs.com, Website: www.dicabs.com Tel No.- 02667-251354/251516 Fax No.-02267-251202 DIAMOND POWER INFRASTRUCTURE LIMITED cables, solar DC and EV charging cables, and conductors, serving sectors including power, infrastructure, oil & gas, renewables, real estate and data centers. Regd. Office & Factory: Vadadala, Phase – II Savli, Vadodara, Gujarat, India-391520 CIN: L31300GJ1992PLC018198 Email: cs@dicabs.com, Website: www.dicabs.com Tel No.- 02667-251354/251516 Fax No.-02267-251202