Press Release

DIAMOND POWER INFRASTRUCTURE LIMITED Date: July 5, 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 Order for Supply of HT & LT Cables for 310 MW HYD22 to HYD26 Data Center Projects, Hyderabad to be executed by L&T, Sterling and Wilson & Blue Star. 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 supply order valued at Rs. 435.71 crore (exclusive of GST) for the supply of HT & LT Power Cables for the 310 MW HYD22 to HYD26 Data Center Projects at Hyderabad, to be executed by L&T, Sterling and Wilson & Blue Star. 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 Larsen &Toubro Ltd (HYD22 & 23), Sterling and Wilson Ltd the order / contract (HYD24 & 25) and Blue Star (HYD26) 2 Nature of the order / contract Supply of High Tension (HT) and Low Tension (LT) Power Cables for the 310 MW HYD22 to HYD26 Data Center Projects at Hyderabad, Telangana 3 Whether order / contract Domestic awarded by domestic or international entity 4 Broad consideration / size of Rs. 435,71,13,171/- (Rupees Four Hundred Thirty-Five Crore the order Seventy-One Lakh Thirteen Thousand One Hundred Seventy- One only), inclusive of packing & forwarding and freight & transit insurance, exclusive of GST. Price is on a variation basis as per the IEEMA PV formula with April 2026 IEEMA indices as base. 5 Scope / quantity Approx. 21,35,324 meters of cables in aggregate — HT Cable: 1,89,404 m; LT Cable: 19,45,920 m. Quantity tolerance of +/- 2% on total cable supplied. Delivery term: DAP – Hyderabad. 6 Time period by which the Deliveries to commence from the first week of August 2026 order / contract is to be and to be completed in a staggered manner by March 2027. executed 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 Ltd secures Rs. 435.71 crore order for supply of HT & LT cables for 310 MW Hyderabad Data Center for L&T, Sterling & Wilson, Blue star Vadodara, July 5, 2026 — Diamond Power Infrastructure Ltd (“DICABS”; BSE: 522163, NSE: DIACABS), one of India’s integrated manufacturers of power cables and conductors, has received a supply order valued at Rs. 435.71 crore (exclusive of GST) for the supply of High Tension (HT) and Low Tension (LT) power cables for the 310 MW HYD22 to HYD26 Data Center Projects at Hyderabad. The scope covers the supply of approximately 21.35 lakh meters (over 2,100 km) of cables, with deliveries commencing from the first week of August 2026 and completing in a staggered manner by March 2027. Order Highlights Parameter Details Order Value Rs. 435,71,13,171/- (Rs. 435.71 crore), exclusive of GST Scope Supply of HT & LT Cables for 310 MW HYD22 to HYD26 Data Center Projects, Hyderabad Quantity ~21,35,324 meters total — HT Cable: 1,89,404 m; LT Cable: 19,45,920 m Delivery Terms DAP – Hyderabad; price inclusive of P&F, freight & transit insurance Delivery Schedule Commencing first week of August 2026; staggered completion by March 2027 Pricing Basis IEEMA PV formula; April 2026 IEEMA indices as base This is among the larger single cable supply orders in India’s data center segment and reinforces the Company’s position as a preferred supplier of power cables for mission-critical digital infrastructure. A structural demand opportunity: Data Centre power cables India’s data center build-out is creating a structural, multi-year demand wave for power cables. India’s installed data center capacity reached roughly 1,700 MW in 2025 after a record year of new supply, and industry forecasts project around 30% growth in 2026, with base-case projections of 4–5 GW by 2030 and AI-accelerated scenarios pointing to 8–9 GW or more. Hyderabad, alongside Mumbai, Chennai and Delhi NCR, is among the fastest-growing hubs. Every megawatt of IT load requires extensive power infrastructure — incoming HT feeders, transformer and switchgear interconnections, and dense LT distribution to UPS systems, PDUs and rack-level loads. Industry estimates place the wires & cables opportunity from India’s data center EPC pipeline at roughly Rs. 4,600 crore over FY25–FY30, within a 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 total data center EPC opportunity of about Rs. 46,400 crore, with the demand mix favoring high-specification products such as LSZH/FRLS, fire-survival, HT/EHV and high-current LT cables. Management Quote (placeholder) “Data centers are emerging as one of the most significant demand drivers for the Indian cable industry. This order for the 310 MW Hyderabad campus validates our manufacturing capability, quality systems and delivery reliability for mission-critical infrastructure. This is amongst the largest Data Center order for Power Cables in the Country. We look forward to executing it to the highest standards within the committed timeline.” Says Umesh Chayya, Sr Vice President- Sales & Marketing. 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 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