Press Release

Ref. No: PEL 55/2026-27 Date: September 21, 2026 To To The Secretary The Manager, BSE Limited Listing Department Phiroze Jeejeebhoy Towers, National Stock Exchange of India Limited Dalal Street, Exchange Plaza, C-1, G Block, Bandra-Kurla Mumbai – 400001 Complex, Bandra (East), Mumbai – 400 051 Scrip Code: 544238 Trading Symbol: PREMIERENE Dear Sir/Madam, Sub: - Disclosure under Regulation 30 of SEBI (Listing Obligations & Disclosure Requirements) Regulations, 2015 – Press Release. Pursuant to Regulation 30 of the SEBI (Listing Obligations & Disclosure Requirements) Regulations, 2015, please find enclosed a copy of the press release titled “Premier Energies Commissi ons India’s Largest Solar Cell Facility, becomes largest Cell manufacturer with 10.6 GW capacity” This is for your information and records. Thanking you, Yours truly, For Premier Energies Limited Hitesh Kumar Jain Company Secretary & Compliance Officer PRESS RELEASE - FOR IMMEDIATE RELEASE Premier Energies Commissions India’s Largest Solar Cell Facility, becomes largest Cell manufacturer with 10.6 GW capacity Hyderabad, 21st September 2026 7 GW N-type TOPCon G12R facility commissioned on time and within budget; designed for approximately 88,000 solar cells per hour and future TOPCon+ upgrades. Premier Energies Limited (NSE: PREMIERENE, BSE: 544238) has commissioned its 7 GW N-type TOPCon G12R solar cell manufacturing facility at Naidupeta, Andhra Pradesh and starts trial runs, taking the company’s total solar cell capacity to 10.6 GW ( India’s largest cell manufacturer ). Spread across 101 acres and developed at a capital expenditure of ₹3,293 crore, the facility is India’s largest solar cell manufacturing plant. Commenting on the development, Mr. Chiranjeev Saluja, Managing Director, Premier Energies Limited, said: “Commissioning India’s largest solar cell manufacturing facility on time and within budget is an important execution milestone for Premier Energies. We remain positive on the outlook for orders, pricing and demand for high-efficiency solar products. The timing of this 7 GW capacity addition is therefore significant: as the line stabilises and ramps up, it gives us the scale to serve that demand with greater supply reliability and operating efficiency. Together with our planned backward integration into ingots and wafers, this strengthens our strategy of building a fully integrated and globally competitive solar manufacturing platform while supporting India’s clean energy transition.” Built for high-throughput, digitally enabled manufacturing, the facility can produce approximately 88,000 solar cells per hour. Advanced digital systems and artificial intelligence support predictive performance analysis, tighter process control and precision manufacturing, while fully automated transport, packing and packaging systems improve throughput, consistency and operating efficiency. The commissioning materially expands Premier Energies’ manufacturing scale as India’s largest solar cell manufacturer and strengthens its ability to serve growing demand for high- efficiency solar products across domestic and international markets. Mr. Sudhir Reddy, Director & Chief Strategy Officer, Premier Energies Limited, added: “Naidupeta plant is a major step forward in our integrated manufacturing roadmap. The combination of scale, automation and advanced cell technology is designed to improve manufacturing competitiveness, strengthen supply-chain resilience and position Premier Energies to address demand for high-efficiency solar products in India and international markets.” The 7 GW plant is designed to be future-ready, with potential upgrades to next-generation TOPCon+ technologies, including poly-finger metallisation and advanced edge-isolation processes. Following stabilisation and ramp-up, the facility is targeting average solar cell efficiency of approximately 25.8%. A Zero Liquid Discharge (ZLD) system has been designed to maximise water recycling and reuse, reinforcing Premier Energies’ focus on responsible resource management and sustainable manufacturing. About Premier Energies Limited Premier Energies is a publicly listed company and one of India’s largest integrated solar manufacturers. It is undertaking a ₹12,500 crore capital expenditure programme over three years to more than double its solar manufacturing capacity, expand backward integration into ingots and wafers, and diversify into inverters, transformers and battery energy storage systems. With a 30-year track record in solar manufacturing, Premier Energies is recognised for technology innovation, sustainability and an employee-centric culture, and has earned Great Place to Work certification for five consecutive years. Media Contact Mohit Chawla Marketing & Communications Premier Energies Limited +91 70163 92138 mohit.chawla@premierenergies.com