🌍 Engineering Sustainability with Intelligence and Impact

In a world accelerating toward net-zero goals, DEISO stands as a bold force in bridging advanced environmental intelligence with practical business and policy solutions. Headquartered in Tokyo, Japan, DEISO integrates scientific precision with digital innovation to address complex sustainability challenges—empowering industries, governments, and academia to achieve measurable environmental outcomes.

With a clear mission to make sustainability intelligent, scalable, and accessible, DEISO drives the global shift toward low-carbon, circular, and resilient systems. Through expert consulting, applied research, premium training, and strategic partnerships, we embed AI into sustainability workflows and provide access to advanced digital twin technology—enabling organizations to rethink how they model, act on, and communicate environmental performance.

Our integrated portfolio—spanning strategic advisory, transformative technologies, and capability development—equips clients to lead with clarity and confidence. At DEISO, we don’t just deliver environmental solutions—we build capabilities, create enduring value, and help you make a lasting impact on people, planet, and performance.