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Sustainability Operating Systems The systems your team uses to run sustainability work repeatedly — data, workflow, governance, review.

Services We audit, review, and execute LCA, Scope 3, PCF, and EPD projects.

Case studies Real LCA, GHG, and PCF projects delivered for enterprise clients.

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What DEISO builds

Operating systems The systems your team uses to run sustainability work repeatedly — data, workflow, governance, review.

Services We audit, review, and execute LCA, Scope 3, PCF, and EPD projects.

Case studies Real LCA, GHG, and PCF projects delivered for enterprise clients.

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What DEISO builds

Operating systems The systems your team uses to run sustainability work repeatedly — data, workflow, governance, review.

Services We audit, review, and execute LCA, Scope 3, PCF, and EPD projects.

Case studies Real LCA, GHG, and PCF projects delivered for enterprise clients.

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DEISO is a Tokyo-based sustainability systems company. We design and deliver enterprise sustainability operating systems for LCA, GHG accounting, PCF, EPD, ESG, and AI-enabled sustainability work — combining technical execution, independent review, audit-readiness, implementation-focused capacity building, and structured intelligence for verification-ready outcomes.

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Sustainability operating systems for enterprises, suppliers, and public sustainability.

Tokyo headquarters · Global project delivery

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English Address:
Level 21 Shiodome Shibarikyu Building
1-2-3 Kaigan, Minato-ku
105-0022 Tokyo, Japan.

Japanese Address:
〒105-0022 東京都港区海岸1-2-3
汐留芝離宮ビルディング21階, 合同会社DEISO.

Phone (JP): 03-5403-6479 / 0488-72-6373
Phone (EN): 070-6969-7700
Fax: 03-5403-6475 / 0488-72-6373
Email: info@dei.so

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Latest News

DEISO Mirai™ AI Pro – Enterprise AI Guidance for Sustainability Execution (Advances in Versions v4.1-v4.3)April 20, 2026
Rapid Sustainability Intelligence & Data Review Services (48–72 Hours) | DEISOApril 20, 2026
DEISO Mirai™ AI Pro v4.0: AI Guidance to Explore DEISO Services, Execution Paths, and SolutionsApril 16, 2026
Senior Sustainability Systems & Digital Intelligence Architect | Careers at DEISOApril 16, 2026
Life Cycle Sustainability Assessment (LCSA) for Funded Academic ProjectsMarch 25, 2026

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