Investor Presentation on the Unaudited Financial Results (Standalone & Consolidated) for the quarter and half-year ended 30th September, 2026.

Date: 4th November, 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: Press Release & Investor Presentation Dear Sir, Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, please find enclosed herewith the Press Release & Investor Presentation on the Unaudited Financial Results (Standalone & Consolidated) for the quarter and half-year ended 30th September, 2026. The same is also available on the Company’s website at www.websolenergy.com This is for your information and record. For WEBSOL ENERGY SYSTEM LIMITED Ashok Purohit Company Secretary & Compliance Officer Membership No. : F7490 Encl. : as above PRESS RELEASE Websol Energy Q2FY27 PAT Jumps 73% YoY to ₹80 Crore Revenue More Than Doubles to ₹361 Crore (YoY) Kolkata, 4 November, 2026: Websol Energy System Limited, (“Websol” or the “Company”) (BSE: 517498; NSE: WEBELSOLAR), one of the leading manufacturers of high-efficiency solar cells and solar modules in India, announced its unaudited financial results for the second quarter and half year ended 30th September, 2026. Websol reported revenue from operations of ₹361.02 crore in Q2FY27, up 114.6% from ₹168.22 crore in Q2FY26. EBITDA increased 77.3% year-on-year to ₹128.14 crore from ₹72.29 crore, while profit after tax (PAT) grew 73.2% to ₹80.21 crore, compared with ₹46.32 crore in the corresponding quarter last year. During the quarter, Websol also made progress on two important strategic priorities: strengthening its balance sheet through the repayment of its outstanding IREDA term loan and securing land for its next phase of manufacturing expansion in West Bengal. Financial Highlights for Q2FY27 & H1FY27 (Rs. Cr) Q2FY27 Q2FY26 Y-o-Y (%) H1FY27 H1FY26 Y-o-Y (%) Revenue from Operations 361.02 168.22 +114.6% 733.62 386.97 +89.6% EBITDA * 128.14 72.29 +77.3% 253.72 175.77 +44.4% EBITDA Margin% 35.5% 43.0% (748 bps) 34.6% 45.4% (1,084 bps) PAT 80.21 46.32 +73.2% 158.00 113.50 +39.2% PAT Margin% 22.0% 27.0% (505 bps) 21.3% 28.9% (764 bps) EPS Basic (Rs.) 1.85 1.10 +68.4% 3.64 2.69 +35.3% * EBITDA excludes other income Business Highlights for Q2FY27 • Cell production for the quarter was 255 MW during Q2FY27, with capacity utilization of 91%. • Module production was 88 MW during Q2FY27, with capacity utilization of 68%. • The outstanding order book stood at ₹1,280 crore as of 30 September 2026. Strategic Capacity Expansion and Land Allotment During the quarter, the Group secured a 54.20-acre land allotment from the Government of West Bengal at Falta Industrial Park for a greenfield solar cell manufacturing facility. The planned complex will add 4 GW of cell capacity, executed in two equal 2 GW phases. Situated near the Company’s existing Falta SEZ operations, this expansion leverages over 30 years of operational history, a skilled regional workforce, and an established supply chain to accelerate project timelines. The initiative reinforces Websol’s position as a major integrated solar manufacturing hub in Eastern India, directly aligning with national clean energy targets. Commenting on the performance, Mr. Sohan Lal Agarwal, Managing Director, said: “Q2FY27 has been a quarter we are particularly proud of. Our revenue more than doubled since last year same period, while our cell lines operated at 91% utilization. We also repaid our IREDA term loan and received the land allotment at Falta for our next phase of expansion. These achievements reflect years of hard work, investment and the trust of our customers. Having spent over thirty years building Websol, I have learnt that building capacity and making it successful are two very different things. What gives me confidence today is seeing our existing plants perform consistently, even as we prepare for the next phase of growth. Our TOPCon upgrade is progressing, with trial runs targeted by the end of FY27. As we look ahead, Websol is evolving from a solar cell manufacturer into an integrated solar energy solutions provider. The Board has approved entry into EPC, Solar IPP, including solar parks, and energy trading, marking our expansion across the broader solar energy value chain. We believe these initiatives will open new growth opportunities and strengthen Websol's position in India's renewable energy sector.” About Websol Energy System Limited: Founded among the pioneers of solar photovoltaic manufacturing in India, Websol specializes in producing high-efficiency solar cells and modules incorporating advanced Mono PERC technology. The Company supplies solar cells primarily within India, supporting module manufacturers to comply with Domestic Content Requirement norms, while its modules are marketed both in India and internationally. Its fully modernized manufacturing facility, located at Falta Special Economic Zone in West Bengal, operates with a current solar cell capacity of 1,200 MW and module capacity of 550 MW. The facility is designed to process wafers up to 210 mm, offering higher energy output and optimized land use for rooftop installations. Websol’s integrated production model, manufacturing both cells and modules in-house, enhances supply chain control and flexibility to address market dynamics. The Company maintains established partnerships with reputed clients and benefits from supportive policy frameworks that encourage local production and technology advancement, underpinning its long-term strategic positioning in the solar industry. For more details, please visit: https://www.websolenergy.com Q2 FY 27 Quarter ended 30th September 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 Q2 FY2027 REVENUE FROM OPERATIONS EBITDA PROFIT AFTER TAX ₹ 361 Cr ₹ 128 Cr ₹ 80 Cr +114.6 % Y-o-Y +77.3 % Y-o-Y +73.2 % Y-o-Y MARGINS 53.0 % 35.5 % 22.0 % GROSS MARGIN EBITDA MARGIN PAT MARGIN CAPITAL BASE * 44.9 % 56.2 % ₹ 777 Cr ₹ 165 Cr RETURN ON EQUITY RETURN ON CAPITAL NET WORTH NET CASH POSITION EMPLOYED 0043 * As at 30th September, 2026; ROE and ROCE annualised on H1 FY27 Continuing the Growth Journey Sustaining the momentum in Q2 FY27 All amounts in ₹ Cr REVENUE FROM OPERATIONS EBITDA* PROFIT AFTER TAX 1,049 303 575 253 155 128 80 168 72 46 FY25 FY26 Q2 FY26 Q2 FY27 FY25 FY26 Q2 FY26 Q2 FY27 FY25 FY26 Q2 FY26 Q2 FY27 +82.4% +114.6% +69.6% +77.3% +95.8% +73.2% FY26 VS FY25 Q2 FY27 VS Q2 FY26 FY26 VS FY25 Q2 FY27 VS Q2 FY26 FY26 VS FY25 Q2 FY27 VS Q2 FY26 * EBITDA excludes other income Carrying Strong Momentum through FY27 The scale-up continues in Q2 FY27 Progress on Expansion In Debt Pre-closed Focus On New TOPCon West Bengal Products Upgradation of one Mono PERC cell 54.20 acres allotted at Falta Entire ₹110 Cr IREDA term loan Launch of solar kits for diverse line to TOPCon resulting in Industrial Park for the 4 GW prepaid on 4th August 2026 from applications and development of incremental capacity of 150 MW – integrated cell facility, close to our internal accruals; pledge on flexible modules -expanding expected efficiency of ~ 25% supply base and skilled workforce promoter shares released and addressable markets & customer interest outgo reduced base Technology Capacity Financial Continuous Leadership Expansion Discipline Innovation Strenghthening Financial Position Debt-free position strengthens financial flexibility for future growth Entire IREDA term loan prepaid from internal accruals, releasing the pledge on promoter shares WHAT IT MEANS ₹ 110 CRORE 4th AUGUST 2026 Funded entirely from internal accruals, with no fresh capital raised and IREDA TERM LOAN PREPAID DATE OF PREPAYMENT no deferral of growth plans All collateral given against the IREDA fa [Showing first 8,000 characters — download PDF for full document]