• Leading the market entry and business setup for Enphase microinverters in Japan, including developing new customer accounts and establishing sales operations. • Managing B2B sales activities and promoting Enphase microinverter solutions to major housing builders through an established industry pipeline. • Engaging with key national builders such as Daito Kentaku, Mitsui Home, Sumitomo Ringyo, Asahi Kasei, Misawa Homes, Haseko, AQ Group, Arnest Wing, and others. • Driving joint business development and collaboration with Japanese PV manufacturers including Kyocera, Kaneka, Sharp, Choshu, Next Energy, F-Wave, Tanita Housing, as well as PPA providers such as Tokyo Gas, Osaka Gas, and TEPCO. • Creating new commercial channels by onboarding and developing relationships with new distributors. • Supporting domestic and global PV manufacturers in expanding their business in Japan, the U.S., and Australia through coordination with Enphase headquarters and regional branches. • Participating in workshops on new solar technologies and regulatory revisions organized by the Tokyo Metropolitan Government, JPEA, NEDO, and PV manufacturers. • Collaborating with national universities on R&D workshops to develop off-grid PV generation systems for disaster-response applications. • Promoting BIPV (Building-Integrated Photovoltaics) with microinverters by participating in pilot testing with major apartment developers and PV manufacturers. • Leading negotiations to secure agreements with two PV manufacturers and one new distributor. • Actively leveraging a strong network within the architecture and building-materials industries to create new business opportunities.

• Managed a team of 16 staff across three divisions—PV module planning, sales, and after-sales service—while overseeing career development and organizational performance. • Established a new construction team for PV systems and battery installations to support the company’s 2024 business expansion. • Led the development of an integrated solar tile product for the smart-housing marketin Tokyo. • Collaborated with line managers to create new business plans, with a strong focus on smart-housing solutions. • Oversaw large-scale recall operations, coordinating component replacements for more than 1,300 customers. • Managed outsourcing contracts, including cost negotiations, scheduling, and weekly reporting to board members. • Founded the After-Sales Service Department in May 2024 to support over 6,000 owners of SMART Solar’s battery systems; supervised daily maintenance operations and optimized service workflows. • Directed call-center operations handling approximately 500 customer inquiries per month, ensuring timely responses and accurate reporting. • Supervised maintenance activities averaging 70 on-site cases per month, conducting root-cause analysis and delivering weekly and monthly performance reports. • Built a nationwide maintenance-outsourcing network, including careful evaluation and selection of partner companies. • Initiated and promoted the company’s DX (Digital Transformation) strategy to improve operational efficiency. • Gained extensive experience in technical construction, after-sales service management, organizational leadership, product development, and PV module planning with global teams. • Provided intensive support for key accounts, including LIXIL, which required high-complexity coordination and issue resolution.

• Managed sales and technical development for three major clients, with a revenue mix of 70% product sales and 30% engineering services. • Built a nationwide installer network and expanded distribution channels in collaboration with key customers. • Prepared monthly and annual sales forecasts and coordinated cross-functionally with sales, logistics, and finance teams. • Supervised a team of four and ensured smooth inter-departmental operations. • Received the Innovation Award (2013) for developing solar-bracket products and expanding the solar-bracket business. • Achieved cumulative sales of 4 million units since 2012, generating 3.8 billion yen in revenue. • Oversaw product quality control for all customers, ensuring high satisfaction and continuous improvement. • Provided nationwide technical engineering support for key accounts, including root-cause analysis, technical reporting, and quality-issue resolution meetings. Achievements – OEM Sales Performance • 2020: 267M yen (83% of 320M target) • 2019: 301M yen (101% of 296M target) • 2018: 264M yen (104% of 252M target) • 2017: 230M yen (97% of 236M target) • 2016: 221M yen (102% of 216M target) • 2015: 187M yen (107% of 174M target) MITSUI Home, Yokohama

(Earlier role) • Supported the sales organization as a Design and Sales Engineering Manager; received the President’s Award in 2006 for outstanding performance. • Led design planning, cost estimation, material specification, and budgeting for numerous high-end residential projects. • Managed and trained a team of 10 sales engineers and staff. • Designed and prepared quotations for over 1,000 residential homes over a 10-year period. • Supervised more than 250 construction sites over five years, ensuring quality, schedule, and cost control. • Achieved strong sales results in collaboration with sales teams as a Sales Engineering Designer in 2007. • Managed project planning for two model homes at major housing exhibition centers. • Oversaw cost management, budgeting, design planning, and sales scheduling. • Handled high-grade residential projects at the Tokyo office, ensuring premium quality and customer satisfaction.