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DEISO Builds Sustainability Operating Systems

For enterprises, suppliers, and public sustainability — LCA, GHG accounting, PCF, EPD, ESG, and AI-supported work.

We deliver LCA, GHG, PCF, EPD, and ESG projects — built on the systems we design, with execution-based capacity building so your team can deliver the same work repeatably, defensibly, and ready for verification.

DEISO by the numbers

Real work behind the systems we build — projects executed, teams trained, and outputs ready for review.

150+
Engagements

Projects, reviews, systems, and technical work delivered to clients.

35+
Countries

Clients and project work across international markets.

70+
Organizations

Companies, institutions, and project teams DEISO has worked with.

7+
Standards applied

ISO 14040/14044, ISO 14067, GHG Protocol, PCR/EPD, and CSRD evidence rules.

9+
Industries

Energy, chemicals, manufacturing, electronics, construction, waste, food, and more.

100+
Technical deliverables

LCA models, GHG inventories, PCF studies, EPDs, and technical reviews delivered to client requirements.

Technical Authority

Technical Direction Behind DEISO Client Engagements

DEISO client and institutional engagements are supported by senior technical direction across sustainability operating systems, technical execution, LCA, GHG accounting, PCF, EPD, and verification-ready delivery.

Technical direction is led by Dr. Mahdi Ikhlayel, PhD — Sustainability Director, Sustainability OS Architect & Technical Execution.

View Technical Direction →

When DEISO Can Help

DEISO helps when your company needs sustainability work done, checked, organized, or turned into a reliable system.

You need LCA, GHG, PCF, EPD, or ESG work delivered

Your sustainability data is scattered across files, teams, or suppliers

You need a technical review before reporting, submission, or verification

A client, regulator, tender, or deadline requires reliable results

Your team needs a repeatable sustainability workflow, not one-time work

You are not sure which service or project path is the right one

DEISO helps you choose the right path, execute the work, review the results, and prepare outputs for reporting, verification, and business decisions.

Choose How to Engage DEISO

Each engagement pathway is structured around execution responsibility, technical risk, and compliance requirements.

Project Execution

Full external execution of LCA, carbon accounting, and sustainability systems under defined technical scope.

Start Project Execution

Independent Technical Audit

Pre-submission technical validation to ensure outputs withstand external review and verification.

Start Technical Audit

Rapid 48–72h Review

Accelerated technical intervention to stabilize outputs, validate data, and reduce immediate risk.

Start Rapid Review

Compliance & Regulatory Support

Execution aligned with disclosure frameworks, regulatory requirements, and reporting obligations.

Start Compliance Support

Not sure where to start?

Tell us what you need — LCA, GHG accounting, PCF, EPD, ESG, or help organizing your sustainability data.

Mirai helps you find the right DEISO service, review option, or project evaluation request — in a few minutes, without a sales call.

Ask DEISO Mirai AI
How to use it

Sustainability work DEISO delivers

Practical sustainability work you can use for reporting, verification, tenders, customers, and business decisions.

LCA models and reports

We build or review LCA models with clear data, assumptions, methods, results, and improvement options — ready to defend in front of a reviewer.

GHG and Scope 3 accounting

We organize emissions data and calculate Scope 1, 2, and 3 results — for reporting, supplier requests, CSRD evidence, and decarbonization

Case studies

Real sustainability projects DEISO has delivered

How DEISO has helped enterprises and institutions complete sustainability projects, review technical work, and organize the data behind it.

DEISO delivers work across LCA, GHG accounting, PCF, EPD, ESG, and sustainability operating systems — so clients can use the results for reporting, verification, supplier requests, tenders, and business decisions.

Project example

From scattered sustainability work to outputs your reviewer accepts.

How DEISO turns unclear data, methods, and files into sustainability work you can actually use — for reporting, review, supplier requests, and business decisions.

What we did: organized the data, built and checked the model, applied the right method, prepared the evidence package — and delivered sustainability outputs the client could put in front of a reviewer.
Before

Data in different files. Methods in someone's head.

The client had emissions data across spreadsheets, supplier inputs in emails, assumptions undocumented, and no clear path from raw data to a defensible result. The work wasn't ready for reporting — and the next reporting cycle would have started from zero.

After

A defensible result the team can run again next year.

DEISO restructured the data, built the calculation model with documented methods, checked the outputs, organized the evidence package, and handed over a result the client could submit, defend in review, and update next cycle without rebuilding from scratch.

Our clients

Enterprises and institutions DEISO has worked with

Selected organizations DEISO has supported across project execution, technical review, and sustainability systems delivery.

Explore DEISO further

See why companies choose DEISO, review who we've worked with, or jump straight to the services.

How DEISO Delivers Results

Sustainability operating systems

We build the structure behind sustainability work — the data, workflows, review steps, reporting logic, governance, and team support for LCA, GHG, PCF, EPD, ESG, and AI-supported delivery.

Explore operating systems

Sustainability results workspace

We organize your LCA, PCF, EPD, Scope 1–3, GHG, and ESG outputs in a secure client workspace — so the results can be reviewed, explained, and used for decisions instead of sitting in scattered files.

Explore workspace

Sustainability dashboards & visualization

Turn sustainability results into clear visuals and decisions.

We create dashboards, hotspot analysis, visual summaries, and the sustainability stories your teams need to understand results, set priorities, and decide what to do next.

Explore dashboards
Insights & news

Practical sustainability insights

Clear guidance on LCA, GHG accounting, PCF, EPD, ESG, sustainability data, and operating systems — written to help your team know what to do next.

Contact Info.

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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