Investor Presentation

Date: 11th August, 2026 To, To, The Manager Listing, The Manager Listing, National Stock Exchange of India Limited BSE Limited Exchange Plaza, Floor 25, Bandra Kurla Complex, PJ Towers, Dalal Street, Bandra (E) Mumbai: 400051 Mumbai: 400 001 Scrip Code- WEBELSOLAR Scrip Code- 517498 Sub: Investor Presentation on Financial Results for the Quarter Ended June 30, 2026 (Q1 FY27) Dear Sir, Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, please find enclosed the Investor Presentation on the Unaudited Financial Results (Standalone and Consolidated) of the Company for the quarter ended June 30, 2026. A copy of the said Investor Presentation will be available on the Company's website at www.websolenergy.com This is for your information and records. For WEBSOL ENERGY SYSTEM LIMITED Ashok Purohit Company Secretary & Compliance Officer Membership No. : F7490 Encl. : as above Q1 FY 27 Quarter ended 30th June 2026 EARNINGS PRESENTATION Websol Energy System Limited BSE 517498 NSE WEBELSOLAR Table of Contents Results Summary Company Overview Industry Outlook Business Update Financial Performance RESULTS SUMMARY Headline Performance Q1 FY2027 REVENUE FROM OPERATIONS EBITDA PROFIT AFTER TAX ₹ 373 Cr ₹ 126 Cr ₹ 78 Cr +70.3 % Y-o-Y +21.4 % Y-o-Y +15.8 % Y-o-Y MARGINS 51.2 % 33.7 % 20.6 % GROSS MARGIN EBITDA MARGIN PAT MARGIN CAPITAL BASE * 66.7 % 65.7 % 0.19 x ₹ (34) Cr RETURN ON EQUITY RETURN ON CAPITAL DEBT / EQUITY NET DEBT POSITION EMPLOYED * As at 31stMarch, 2026 Continuing the Growth Journey A strong start to FY27 REVENUE FROM OPERATIONS EBITDA* PROFIT AFTER TAX 1,049 303 575 253 155 126 78 103 67 FY25 FY26 Q1 FY26 Q1 FY27 FY25 FY26 Q1 FY26 Q1 FY27 FY25 FY26 Q1 FY26 Q1 FY27 +82.4% +70.3% +69.6% +21.4% +95.8% +15.8% FY26 VS FY25 Q1 FY27 VS Q1 FY26 FY26 VS FY25 Q1 FY27 VS Q1 FY26 FY26 VS FY25 Q1 FY27 VS Q1 FY26 * EBITDA excludes other income All amounts in ₹ Cr Carrying Strong Momentum into FY27 The scale-up continues in Q1FY27 Progress on Expansion In Pre-closure of Focus On New TOPCon West Bengal Debt Products Upgradation of one Mono PERC cell Concentrating expansion keeps the Early repayment of IREDA loan - Launch of solar kits for diverse line to TOPCon resulting in Company close to a deepening reduction in pledged shares of applications and development of incremental capacity of 150 MW – supply base and skilled workforce - promoters and reduced interest flexible modules -expanding expected efficiency of ~ 25% accelerating production and outgo –highlighting strong internal addressable markets & customer increasing synergies accruals base Technology Capacity Financial Continuous Leadership Expansion Discipline Innovation Management Outlook FY27 will be the year – our year of acceleration “Our Q1 FY27 results mark a transformational milestone, proving that the momentum we captured in FY26 — our landmark year of returning to power — has accelerated significantly. We have successfully evolved from a legacy entity into a high-growth, technology-driven manufacturer. As we scale, our focus is clear: aggressive integration of high-efficiency TOPCon technology to lead the market. With a robust order book and firm alignment with flagship government schemes, we are not just expanding capacity; we are defining the future of Indian solar.” FY27 is our year of technology-led scaling, and we are strategically positioned to Mr. Sohan Lal Agarwal capture the next wave of industry growth. MANAGING DIRECTOR COMPANY OVERVIEW Company Overview A legacy built on three decades of resilience 1990 30+ 1.2 GW 23 %+ 550 MW 4 GW ESTABLISHED YEARS OF CELL AVERAGE CELL MODULE TOPCON OPERATION CAPACITY EFFICIENCY CAPACITY PIPELINE Among India's earliest Continuous Incremental 150 MW Industry-leading Forward integrated to Integrated greenfield solar cell manufacturing cell capacity post average cell efficiency cater to all DCR cell and module manufacturers presence through upgradation of one in Mono PERC schemes such as PM expansion in two multiple technology line to TOPCon technology, sustained KUSUM and PM Surya phases cycles expected by Q4 FY27 at 90%+ cell capacity Ghar utilization Technology and Capacity Evolution Driving solar excellence through continuous technological innovation and capacity expansion CELL TECHNOLOGY AND PEAK OUTPUT WHY CELL FORMAT MATTERS CONVENTIONAL MONO-CRYSTALLINE MULTI-CRYSTALLINE MONO PERC TOPCON 9.5 Wp Solar cells sit at the heart of generation. Conventional cells have 7.6 Wp evolved through multi-crystalline and PERC to TOPCon, and larger formats raise output over the same surface area, lowering balance-of-system 4.7 Wp cost. 4.1 Wp 2.5 Wp 1.7 Wp 1.1 Wp 1.3 Wp 10x OUTPUT PER CELL 1.1 Wp in 1994 to 9.5 Wp in 2027.Websol has seen a tenfold increase in cell output in the last 3 decades. 1994 2001 2003 2009 2015 2021 2024 2027 INCREMENTAL CELL CAPACITY · MW 1 MW → 5.35 GW Upcoming Capacity From 1 MW to a multi gigawatt platform. 5,350 3,350 RAPID TRANSITION TO TOPCON 1,200 1 60 120 180 250 TOPConto account for ~88% of cell capacity by FY28. 1994 2009 2012 2015 2018 2024 2025 2027E 2028E Strong Foundation, Proven Execution Scaling high-efficiency capacity to capture India’s solar mandate 01 02 03 Unmatched Legacy Operating Agility High Efficiency and Utilization Pioneer of solar manufacturing in India with a Second cell production line commissioned in Mono PERC cell lines operating at 90%+ 30+ year legacy — deep institutional knowledge, under 12 months and TOPCon upgradation utilization with 23.3% average efficiency, established supply chains and a resilient underway,demonstratingabilitytoscalequickly, transition to TOPCon expected to increase operationalculture. maintainingqualityandoperationalexcellence. efficiencyto~25%. 04 05 06 Expansion Roadmap Capital Discipline ALMM Approved One existing 600 MW Mono PERC cell line to be Healthy Debt/ EBITDA and Debt-to-Equity ratios One of 14 ALMM-approved solar cell upgraded to TOPCon taking capacity to 750MW demonstrate prudent capital management while manufacturers in India, actively supplying to PM and overall to 1.35 GW. Additional greenfield 4 supporting growth without compromising Surya Ghar, PM-KUSUM and other government GW integrated TOPCon cell & module in financialstability. schemes. progress. Experienced and Seasoned Management Strong professional experience driving sustainable business performance Mr. Sohan Lal Agarwal Ms. Sanjana Khaitan Mrs. Vasanthi Sreeram Mr. Amrit Daga Mr. Paritosh Jain Mr. Ashok Purohit MANAGING EXECUTIVE CHIEF TECHNICAL CHIEF FINANCIAL TECHNICAL COMPANY DIRECTOR DIRECTOR OFFICER OFFICER ADVISOR SECRETARY Pioneer of solar Finance post-graduate 30+ years of experience in Qualified Chartered 20+ years of experience in Fellow Company Secretary manufacturing in India with from the University of solar cell manufacturing. Accountant and Company semiconductors, including with a Master's degree in over four decades of Cambridge. Brings Drives technological Secretary. Brings 17 years 18 years in space systems. finance. Expertise in leadership. Built one of experience in finance-led evolution across the of experience in corporate Extensive semiconductor corporate laws, India's first solar cell and strategy and global Company's cell and finance, accounts and manufacturing governance and module platforms. operating environments. module businesses. taxation. background. compliance. Board of Directors Diverse Board expertise across key domains Mr. Sohan Lal Ms. Sanjana Mr. Sanjay Agarwal Khaitan Kumar MANAGING EXECUTIVE NON-EXECUTIVE DIRECTOR DIRECTOR DIRECTOR Founder of Websol, he has led its solar A finance post-graduate from the A BTech from the National Institute of manufacturing business since 1990, University of Cambridge, bringing finance- Technology, Kurukshetra, with over 38 establishing one of India’s early integrated led strategy and global operating years of leadership experience in energy. solar cell and module opera [Showing first 8,000 characters — download PDF for full document]