Please find attached 19th Annual Report of the Company for the F.Y. 2025-26.

Prostarm/Secretarial/2026-27/51 August 17, 2026 BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers, Exchange Plaza, C-1, Block G, Dalal Street, Mumbai – 400 001 Bandra Kurla Complex, Bandra (E), Mumbai – 400 051 Scrip Code: 544410 Scrip Symbol: PROSTARM Sub: Submission of 19th Annual Report for Financial Year ended March 31, 2026 Ref: Regulation 34 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements Regulations), 2015 (the “SEBI Listing Regulations”) Dear Sir/Madam, This is further to our letter dated August 12, 2026, wherein we had informed that the 19th Annual General Meeting (‘AGM’) of the Company will be held on Friday, September 11, 2026 at 03.00 p.m. (IST) through Video Conferencing (‘VC’)/ Other Audio-Visual Means (‘OAVM’) in accordance, with the relevant circulars issued by Ministry of Corporate Affairs and the Securities and Exchange Board of India. We are enclosing herewith Annual Report of the Company for Financial Year ended March 31, 2026 along with Notice of the 19th AGM of the Company, which is being sent to the Members, who have registered their e-mail addresses with the Depository Participant(s). Further, in accordance with Regulation 36(1)(b) of the SEBI Listing Regulations, a letter is being send to Members whose e-mail addresses are not registered with Depository Participant(s) providing the weblink from where the Annual Report can be accessed on the Company’s website. The Annual Report of the Company for the Financial Year ended March 31, 2026 along with Notice convening the 19th AGM of the Company are available on the website of the Company at www.prostarm.com. Kindly take the above information on record. Thanking you, For Prostarm Info Systems Limited Sachin Gupta Company Secretary and Compliance officer Membership No: F12500 Encl: As above Annual Report 2025-26 POWERING GROWTH, INNOVATIVE SOLUTIONS. ENERGY STORAGE SUSTAINABLE SOLUTION RELIABLE PERFORMANCE VALUE CREATION EMPOWERING COMMUNITIES PROSTARM INFO SYSTEMS LIMITED Annual Report 2025-26 Index Theme Introduction WHAT’S POWERING GROWTH, INSIDE INNOVATIVE SOLUTIONS. Corporate The global energy Against this backdrop, FY2025-26 was a year of purposeful progress for Page No. 2 Prostarm. We strengthened our manufacturing capabilities, advanced Overview landscape is our Battery Energy Storage System (BESS) and UPS manufacturing 02 Prostarm at a Glance undergoing a significant expansion projects, and continued to diversify our portfolio of power 04 Investment Case transformation, driven conditioning, energy storage and integrated technology solutions. Our healthy order book, expanding presence across key sectors and 06 Business Segments by rapid digitalisation, investments in digital transformation have further reinforced our 08 Presence industrial automation, operational capabilities and strengthened our ability to meet the 10 Manufacturing Footprint renewable energy evolving needs of our customers. 12 CEO and Director’s adoption and the We enhanced our financial profile through an improved credit rating, Message strengthened our manufacturing roadmap, initiated renewable increasing need 14 Key Performance energy investments and continued to deliver reliable solutions across Indicators for resilient power government, infrastructure, healthcare, BFSI, railways and industrial 16 Industries infrastructure. As sectors. These milestones underscore our disciplined execution and Page No. 10 Page No. 20 long-term growth strategy. 17 Quality and businesses and Certifications governments invest As India accelerates its transition towards cleaner energy, greater 18 Robust Clientele electrification and modern power infrastructure, Prostarm remains in reliable power focused on delivering innovative, reliable and customer-centric 19 Strategic Priorities management, energy solutions. Guided by engineering excellence, manufacturing expertise 20 People storage and smart and a culture of continuous improvement, we are well positioned to 22 Environment, Social and capitalise on emerging opportunities while creating sustainable value infrastructure, the Governance (ESG) for our customers, shareholders and all stakeholders. 24 Board of Directors demand for innovative, 26 Management Team resilient and integrated 28 Corporate Information power solutions continues to accelerate. Statutory Page No. 12 Reports 30 Notice 2025-26 HIGHLIGHTS 56 Directors’ Report 74 Management Discussion Financial and Analysis Page No. 22 84 Report on Corporate 38,577 5,216 3,300 Governance ₹ lakhs ₹ lakhs ₹ lakhs Financial Revenue EBITDA Profit After Tax (PAT) Statements 114 Standalone 192 Consolidated 10% - Y-o-Y growth 10% - Y-o-Y growth 14.40% - Y-o-Y growth Corporate Overview Statutory Reports Financial Statements Prostarm at a Glance COMPREHENSIVE POWER SOLUTIONS PARTNER Established in 2008, Complementing its manufacturing capabilities, Prostarm delivers OUR VALUES KEY FACTS Prostarm Info Systems both standard and customised solutions through in-house production facilities and strategic third-party manufacturing partnerships. The Limited is a leading provider Company has further expanded its offerings with third-party power of integrated power Vision Awareness products, including batteries, solar panels, allied products and reverse 18+ solutions, specialising in logistics solutions, enabling customers to access end-to-end power Powering Tomorrow through We are aware of our carbon the design, manufacturing, infrastructure under a single platform. Sustainable Innovation remains footprint, and we make sure that Years of experience assembly, supply and Beyond products, Prostarm provides comprehensive System Integration our in-dominatable Vision. We appropriate measures are taken servicing of energy storage Solutions, encompassing the design, deployment and lifecycle are continuously making efforts to reduce the same. Anticipating and power conditioning management of enterprise IT infrastructure, while its Solar EPC business to understand the power needs the need for clean energy, we equipment. The Company has successfully commissioned 10.56 MW of rooftop solar projects across that could arise in the future have also launched a number of 3 100+ sites. The Company's value-added services—including installation, and steer research accordingly power backup solutions that run offers a comprehensive rental solutions, after-sales support and Annual Maintenance Contracts to provide clean, reliable & on renewable energy. portfolio comprising UPS Manufacturing units (AMC)—strengthen long-term customer relationships and generate uninterrupted power solutions to systems, inverter systems, recurring revenue streams, reinforcing its position as a trusted partner a growing India. lift inverters, solar hybrid for government, industrial, commercial and institutional customers inverters, lithium-ion across India. battery packs, Battery Trust Innovation 2,00,000+ Energy Storage Systems Through friendly approach Our well-equipped R&D facility (BESS), servo-controlled in business transactions and is always focused on improving Installations voltage stabilizers, isolation prompt response to calls for the technology we offer our transformers and other support, we emphasise on customers. building a long and trustworthy advanced power solutions. relationship with the customer. 467 Dealers pan-India 11,064 ₹ Mn Total order in hand Manpower employed Proposed Unit at Jhajjar, Haryana - 2 - Prostarm Info Systems Limited Annual Report 2025-26 - 3 - Corporate Overview Statutory Reports Financial Statements Investment Case CREATING ENDURING VALUE 01 02 03 04 05 06 DIVERSE & PAN-INDIA MANUFACTURING POSITIONED STRONG TRUSTED FUTURE-READY PRESENCE & EXECUTION FOR THE ENERGY FINANCIAL CUSTOMER PORTFOLIO Our extensive sales, service and EXCELLENCE TRANSITION FOUNDATION RELATIONSHIPS distribution network enables Our diversified portfolio addresses us to deliver reliable solutions Our [Showing first 8,000 characters — download PDF for full document]