Press Release on the subject - RIR POWER ELECTRONICS LIMITED Announces Q2 FY27 Results

Ref. RIR/SEC/13951/2026 27th October, 2026 Bombay Stock Exchange Limited The Manager – Listing Department Corporate Relationship Department, National Stock Exchange of India Ltd., 1st Floor, Rotunda Building, Exchange Plaza, C-1, G-Block, P. J. Towers, Dalal Street, Bandra Kurla Complex, Bandra (East), Mumbai-400001 Mumbai - 400051 BSE SCRIP Code : 517035 NSE Symbol : RIR Subject.: Submission of Press/ Earnings Release for Q2 FY27 Results Dear Sir/Madam, With reference to the above subject, please find enclosed herewith Press/ Earnings Release on the subject “RIR Power Electronics Limited Announces Q2 FY27 Results.” Kindly take the same on record. Thanking you. Yours faithfully, For RIR POWER ELECTRONICS LIMITED BHAVIN P RAMBHIA COMPANY SECRETARY Encl : a/a Earnings Release | Q2 FY 2026 RIR Power Electronics Limited Announces Q2 FY27 Results Mumbai, October 27, 2026: RIR Power Electronics Limited (BSE: 517035, NSE: RIR) announced its unaudited standalone financial results for the quarter ended 30th September 2026 (Q2 FY27). Financial Performance on standalone basis for Q2 FY27 (Amount in ₹ crore, except EPS) Period Q2 FY27 Q2 FY26 YoY% Q1 FY27 QoQ% Revenue 33.98 25.64 32.51% 27.16 25.10% Adjusted EBITDA * 5.66 4.36 29.67% 4.71 20.22% Adjusted EBITDA 16.65% 17.01% - 36 bps 17.32% - 67 bps Margin * PAT 4.45 3.15 41.2% 3.14 41.72% PAT Margin 12.50% 11.97% + 53 bps 11.23% + 127 bps Basic EPS per share (Not annualized) 0.56 0.47 18.92% 0.39 41.73% (in ₹) *Adjusted EBITDA is before considering ESOP expenses of ₹ 1.03 crs in Q2 FY27 and ₹ 0.72 crs in Q1 FY27 Latest Strategic Developments • With respect to the upcoming facility in Odisha, the project will be executed in two phases, where phase one consists of Epitaxy & Pakaging and phase 2 is the fabrication. The clean room construction and infrastructure for sourcing the power supply through 33kV lines has already been completed in Q1 this year. • Furthermore in this quarter the erection and installation of state-of-the-art Silicon Carbide (SiC) Epitaxial Wafer manufacturing reactors is completed. This development marks a significant milestone in the company’s plans to establish India’s first vertically integrated SiC semiconductor production facility in Odisha, strengthening its commitment to developing advanced semiconductor manufacturing capabilities in India. The readiness of this facility was also witnessed by senior officials of the Odisha state government in September this year. • The Bhubaneshwar facility is expected to commence commercial production upon completion of the remaining statutory and regulatory formalities. The key equipment required for the SiC epitaxial wafer manufacturing process has been installed, while essential power connections, utilities and other supporting infrastructure have been commissioned and are in place. The completion of these critical infrastructure elements represents an important step towards operationalising the facility thereby delivering India’s first SiC Epitaxial wafers for domestic and global markets. • RIR’s focus on new product development for Railway and Power sectors will continue to sustain the current growth trajectory. Management Comments: Dr. Harshad Mehta, Non-Executive Chairman, said, “Our Q2 FY27 performance reflects steady progress in terms of operational revenue and profitability. Beyond our financial performance, the installation of SiC epitaxial wafer manufacturing reactors at our Odisha facility marks an important step towards advancing India’s semiconductor capabilities and strengthening the Make in India initiative. Our focus on serving the railway, defence and satellite technology sectors reflects our commitment to building indigenous capabilities in strategically important industries. The government’s continued support and enabling policy environment are further encouraging progress in these areas. With comfortable liquidity and a strengthening balance sheet, we remain focused on developing new products and creating sustainable, long-term value for our stakeholders.” Mr. N Ramesh Kumar, Managing Director and Chief Executive Officer, said, “Our Q2 FY2027 results are encouraging, with revenue from operations growing 32.5% year-on-year while Profit After Tax (PAT) rose 41.2% to ₹4.44 crore. The expansion in PAT margin from 11.97% to 12.50% is another positive indicator of our progress, particularly amid the ongoing geopolitical uncertainties and cost pressures. We remain committed to building on this performance and pursuing steady, sustainable growth in the years ahead. With regards to our Bhubaneshwar facility, we have completed the erection and installation of the Epitaxial Wafer manufacturing reactors, the readiness of which was also witnessed by senior officials of the Odisha state government in September this year. Overall we are on schedule and we are awaiting for a few statutory and regulatory formalities before commencing operation sometime in Q3 this year.” About RIR Power Electronics Limited : RIR Power Electronics Limited (BSE: 517035, NSE: RIR) is a global pioneer in high-power semiconductor solutions, driving innovation and energy efficiency. Its portfolio of high-performance semiconductor devices, assemblies, and energy management systems enables customers to address the evolving demands of modern energy systems. The company's innovative products and solutions empower energy performance at the highest level in both existing and emerging applications. Trusted worldwide for reliability and performance, RIR stands at the forefront of sustainable energy innovation, powering progress, one breakthrough at a time. For more information, visit RIR website at www.rirpowersemi.com. Contact details: Investor relations Abhishek Savant Ketan Netawate Veritas Reputation PR Pvt Ltd Veritas Reputation PR Pvt Ltd abhishek@veritasreputation.com ketan.netawate@veritasreputation.com +91 810 88488 22 +91 88570 92518