Integrated Design & Engineering Holdings Co.,Ltd., together with its subsidiaries, provides engineering consultation, power engineering, and other services in Japan and internationally. It offers construction consulting services for the development and maintenance of social infrastructures, regional development, and reconstruction assistance in disaster-stricken areas, such as river and water resources, roads, port and airports, water environment areas, transportation policy and planning, railway, social system, geo environment and geohazard management, defense infrastructure, and centers for satellite intelligence service. The company also provides urban and spatial development, which includes community development, architecture, environment, urban revitalization, roads and structures, disaster preparedness and geology, water engineering, surveying, landscape, water supply and sewerage, and compensation. In addition, it engages in the research, development, design, construction, management, operation, and support of power generation and energy management projects including electricity storage, renewable energy aggregations, operation and maintenance of hydropower, and equipment and device manufacturing, as well as mechanical, electrical, and information consulting. The company was founded in 1946 and is headquartered in Tokyo, Japan. As of February 5, 2025, Integrated Design & Engineering Holdings Co.,Ltd. operates as a subsidiary of Tokio Marine Holdings, Inc..
