Capacity addition

DIAMOND POWER INFRASTRUCTURE LIMITED August 20, 2026 Corporate Relations Department Listing Department BSE Limited National Stock Exchange of India Limited 2nd Floor, P.J. Towers Exchange Plaza, Plot No. C/1, G- Block, Dalal Street, Bandra Kurla Complex, Bandra (E), Mumbai – 400 001 Mumbai – 400 051 Scrip Code: 522163 NSE: DIACABS Sub: Commissioning of a copper wire drawing and copper cable manufacturing line and commencement of commercial production thereat Ref.: Disclosure pursuant to Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir/Madam, Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 read with Para B (Items 1, 2 and 3) of Part A of Schedule III thereto, we wish to inform the Exchange that the Company has successfully commissioned a dedicated copper wire drawing and copper cable manufacturing line at its integrated manufacturing complex at Village Vadadala, Phase-II, Savli, District Vadodara, Gujarat, and that commercial production at the said line has commenced with effect from August 20, 2026. The line has an installed capacity of 1,500 MT per month of copper cables and is designed for cables used in applications with high power intensity and high current-carrying requirements, including data centres, power plants and industrial installations. The scope of the line includes in-house drawing of copper wire from copper wire rod, thereby integrating conductor manufacture within the Company’s own facility. The Company has hitherto been primarily a manufacturer of aluminium-based cables and conductors. The commissioning of this line marks the Company’s entry into copper-based cables, being a higher realisation product segment, and enables the Company to offer its customers a complete cable package across both aluminium and copper conductors. The same does not constitute a change in the general character or nature of the business of the Company. The details in respect of the aforesaid event are set out in Annexure A. The Press Release issued in this regard is also enclosed herewith in Annexure B. This intimation is also being hosted on the website of the Company at www.dicabs.com in terms of Regulation 46 of the Listing Regulations. You are requested to take the above on record. Thanking you, Yours sincerely, For Diamond Power Infrastructure Limited Jayesh Patel Company Secretary ICSI Mem.No: A14898 Encl. as above Regd. Office & Factory: Vadodara, 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 Details of the event disclosed under Regulation 30 of the SEBI (LODR) Regulations, 2015 read with Para B (Items 1, 2 and 3) of Part A of Schedule III Sr. Particulars Details 1 Name and location of the unit / Copper Wire Drawing and Copper Cable division Manufacturing Line, set up within the Company’s existing integrated manufacturing complex at Village Vadadala, Phase-II, Savli, District Vadodara, Gujarat – 391520 2 Date of commissioning / August 20, 2026 commencement of commercial production 3 Products to be manufactured Drawn copper conductor (from copper wire rod) and copper-conductor power cables for high current-carrying applications, including data centres, power plants and industrial installations 4 Installed capacity 1,500 MT per month of copper cables 5 Existing capacity and existing Nil, this being the Company’s first copper capacity utilisation cable manufacturing line 6 Period within which the capacity The line stands commissioned; commercial has been / is to be added production has commenced with effect from the date stated at Sr. No. 2. 7 Investment required / incurred No substantial investment is required or has and mode of financing been incurred, as the requisite machinery and infrastructure are already available with the Company 8 Rationale for the capacity addition To extend the Company’s cables portfolio from aluminium-conductor cables into copper-conductor cables, which command higher realisations and are specified for high power-intensity applications, and to enable Regd. Office & Factory: Vadodara, 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 the Company to offer customers a complete cable package across both conductor materials 9 Whether the same constitutes a No. This is an extension of the Company’s change in the general character or existing business of manufacture of power nature of business cables into an additional conductor material. There is no change in the general character or nature of the business of the Company. 10 Countries / markets to be Domestic (India) and export markets, in line addressed with the Company’s existing customer base 11 Expected impact on turnover and The same is expected to support the growth operations and expansion of the Company’s business and positively impact its topline 12 Whether the promoter / promoter No group / group companies have any interest in the said event 13 Whether the event is a related Not applicable party transaction Regd. Office & Factory: Vadodara, 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 enters copper cables with commissioning of a dedicated copper wire drawing and cable manufacturing line New line adds 1,500 MT per month of copper cable capacity, targeted at data centres, power plants and other high power-intensity applications Vadodara, August 20, 2026: Diamond Power Infrastructure Limited (BSE: 522163 | NSE: DIACABS), which manufactures power cables and transmission conductors under the DICABS brand, today announced that it has commissioned a dedicated copper wire drawing and copper cable manufacturing line at its integrated manufacturing complex at Vadadala, Savli, Vadodara, Gujarat. Commercial production at the line has commenced. The line has an installed capacity of 1,500 MT of copper cables per month and is built for cables used in applications with high power intensity — principally data centers and power plants, along with other heavy industrial installations where very high currents must be carried within constrained cable routes. The commissioning marks Diamond Power’s entry into the copper cable segment. Until now, the Company has primarily focused on manufacturing aluminium-based cables and conductors. The addition of copper cables will enable the Company to expand its product portfolio and cater to the broader cable requirements of its existing customers across both aluminium and copper applications, thereby strengthening its market presence and customer engagement. Importantly, the facility integrates copper wire drawing in-house: copper conductor will be drawn from wire rod within the Company’s own plant and taken through to the finished cable, giving Diamond Power direct control over conductor quality, consistency and cost across the copper range. Commenting on the development, Mr. Kavish Shah, Vice President, Corporate Strategy, Diamond Power Infrastructure Limited, said: “Our customers have been asking us for a single source across both aluminium and copper. Until now we could serve only a part of that requirement. With this line we can offer the complete cable package — and we are entering copper at the point where demand is strongest and most demanding, in data centres and power plants. This is a deliberate step up the value chain: higher specification, higher realisation, and a segment where quality and delivery reliability decide the order. It also sits naturally alongside the capability we have built in medium [Showing first 8,000 characters — download PDF for full document]