ESG consulting and reporting
GRI, ISSB and ESRS-aligned ESG reporting by DEISO — for organisations that must defend decisions, withstand audits, and align sustainability with strategy
ESG readiness, ESG reports, double materiality and group programmes, backed by LCA, S-LCA, GHG and EPD evidence.
Third-party assurance fees are not covered by DEISO. Assurance is carried out by an independent assurance provider and paid by the client directly; DEISO prepares the report for assurance and coordinates the process.
DEISO: Tokyo-based ESG consultancy building defensible ESG reporting worldwide
DEISO LLC (合同会社DEISO) is a sustainability consulting firm headquartered in Tokyo, Japan, that builds governance-ready ESG systems and reports for organisations in Japan, Asia, the Middle East and Europe. Aligned with GRI, IFRS S1 and S2, and ESRS, we assess materiality, structure your ESG data, draft the report and prepare it for assurance — with environmental and social metrics backed by DEISO’s own LCA, S-LCA, GHG and EPD evidence.
- 회사
- DEISO LLC (合同会社DEISO), sustainability and ESG consulting
- Headquarters
- Level 21, Shiodome Shibarikyu Building, 1-2-3 Kaigan, Minato-ku, Tokyo 105-0022, Japan
- 실행
- Remote structured execution, on-site project development or hybrid implementation
- Plans
- ESG readiness, ESG reports, ESG reports with double materiality, and group ESG programmes
- Reporting frameworks
- GRI Standards, IFRS S1 and S2 (ISSB), CSRD and ESRS, Japan’s SSBJ standards and CDP
- Materiality
- Materiality screening, materiality assessment with stakeholder input, and ESRS-aligned double materiality with an impacts, risks and opportunities register
- Standards basis
- ISO 14040 and ISO 14044, ISO 14064, ISO 14001 and the GHG 프로토콜
- Evidence layer
- ESG metrics backed by DEISO’s own LCA, S-LCA, GHG 회계, PCF 및 EPD work
- ESG data systems
- Structured data flows, indicator systems, documentation protocols and digital management logic
- Sectors
- Energy, infrastructure, manufacturing and technology
- Assurance
- DEISO is not an assurance provider. Third-party assurance fees are paid by the client directly
- Team
- Led by 박사 Mahdi Ikhlayel, PhD in Sustainability Science (University of Tokyo)
- 문의
박사 Mahdi Ikhlayel, PhD, Sustainability Science
Sustainability Director, Sustainability OS Architect & Technical Execution
Every engagement DEISO runs is technically directed, quality-assured, and methodologically governed by Dr. Ikhlayel — a senior sustainability scientist with over a decade of applied practice across LCA, GHG, PCF, and EPD.
125+
Publications reviewed
15+
International journals
35+
Countries reached
12+
LCA studies conducted in research and industry
1,000+
Hours of LCA advisory and training
Work that has reached Saudi Aramco, PETRONAS, Saudi Energy, WWF, Seedstars, NTU Singapore, UDST Qatar, and Seoul National University — across industry and academia in 35+ countries. View all clients →
View technical direction →DEISO ESG plans and pricing
Four plans, from ESG readiness to group programmes, aligned with GRI, IFRS S1 and S2, and ESRS. Every plan runs on DEISO’s own cloud platform.
DEISO Grid and DEISO Drive are included in every plan: follow your project, share files securely and give your whole team access to the results.
DEISO ESG Basic
이전 버전 USD 9,500 per entityFramework selection, gap analysis, materiality screening, KPI set and roadmap. Credited toward Pro.
견적 요청하기 →DEISO ESG Pro
이전 버전 USD 32,000 per entity, one reporting yearA GRI or ISSB-aligned ESG report with a materiality assessment, data collection and content index.
견적 요청하기 →DEISO ESG Expert
이전 버전 USD 44,000 per entity, one reporting yearPro plus double materiality, ESRS or ISSB datapoint mapping, assurance readiness, training and support.
견적 요청하기 →DEISO ESG Expert+
이전 버전 USD 59,000 for up to 3 entitiesExpert for groups, with ESG data system architecture and governance integration.
견적 요청하기 →Third-party assurance fees are not covered by DEISO. Assurance is carried out by an independent assurance provider and paid by the client directly; DEISO prepares the report for assurance and coordinates the process.
Compare plans
Select any feature name to read what it includes.
| 기능 | 기초이전 버전USD 9,500 | Pro이전 버전USD 32,000 | 엑스퍼트이전 버전USD 44,000 | Expert+이전 버전USD 59,000 |
|---|---|---|---|---|
| 검토 범위 | ||||
Engagement type?Basic is an ESG readiness assessment. Pro produces an ESG report. Expert adds double materiality, datapoint mapping, assurance readiness and team handover. Expert+ extends Expert to groups. | ESG readiness | ESG report | ESG report with double materiality | Group ESG programme |
Entities covered?Prices cover one legal entity. Expert+ covers up to 3 entities; larger groups are quotation based. | 1 entity | 1 entity | 1 entity | Up to 3 entities |
Reporting year?Each plan covers one reporting year. Annual cycles can be quoted as a retainer. | 1 year | 1 year | 1 year | 1 year |
Typical timeline?Counted from receipt of complete data and stakeholder availability. | 3–5 weeks | 2–4 months | 3–5 months | 4–6 months |
| 프레임워크 | ||||
Framework selection and gap analysis?DEISO identifies the frameworks that apply to you — GRI Standards, IFRS S1 and S2, CSRD and ESRS, Japan’s SSBJ standards or CDP — and assesses your gaps against them. | ||||
Reporting frameworks covered?The frameworks the report is prepared against. | Gap analysis, up to 3 | 1 framework (GRI or ISSB) | 1 framework (GRI, ISSB or ESRS) | Up to 2 frameworks |
ESRS and ISSB datapoint mapping?Your data mapped to the specific disclosure requirements of ESRS or IFRS S1 and S2. | ||||
| Materiality | ||||
Materiality approach?Basic screens likely material topics. Pro runs a materiality assessment. Expert and Expert+ run a double materiality assessment covering impact and financial materiality. | Screening | Materiality assessment | Double materiality | Double materiality, group-level |
Stakeholder engagement?Stakeholder input through a structured survey and workshop. | ||||
Impacts, risks and opportunities (IRO) register?A documented register of material impacts, risks and opportunities, as ESRS requires. | ||||
| Data and evidence | ||||
ESG KPI set defined?A defined set of environmental, social and governance indicators matched to your material topics. | ||||
Professional data collection?ESG data collected with DEISO’s structured Excel data collection templates and framework, with validation checks built in. | Data gap analysis | Full data collection | Full data collection | Full data, all entities |
GHG emissions data?ESG plans use your existing GHG data. A full Scope 1–3 inventory is a separate DEISO GHG 회계 plan. | Uses your data | Uses your data | Uses your data | Uses your data |
LCA, S-LCA and EPD evidence integration?Existing life cycle, social and product-level evidence built into your ESG metrics, so claims rest on quantified, system-based data. | Gap check | |||
ESG data system architecture?Design of structured data flows, indicator systems, documentation protocols and digital management logic. | ||||
| 보고 | ||||
Roadmap and recommendations?Prioritised steps to close gaps and strengthen your ESG position. | ||||
ESG report drafted?The report drafted to the chosen framework, with traceable data behind every figure. | ||||
Content index prepared?The framework content index, such as the GRI content index, prepared with the report. | ||||
Assurance readiness review?Documentation and evidence trails reviewed for third-party assurance. | ||||
Governance integration?ESG responsibilities, controls and review cycles embedded in your governance structure. | ||||
KPI results Excel workbook?All indicator results in a structured Excel workbook. | ||||
Report revision rounds?Rounds of revisions to the draft based on your comments. | 1 | 2 | 2 | 3 |
Results walkthrough session?A live session to walk your team through the findings. | ||||
| Third-party fees | ||||
Assurance fee?Third-party assurance fees are not covered by DEISO. Assurance is carried out by an independent assurance provider and paid by the client directly; DEISO prepares the report for assurance and coordinates the process. | Not included — paid by client | Not included — paid by client | Not included — paid by client | |
GRI Report Services fee?If you use GRI’s own content index services, GRI’s fees are paid by the client directly. | Not included — paid by client | Not included — paid by client | Not included — paid by client | |
| DEISO cloud platform | ||||
DEISO Grid?DEISO Grid is DEISO’s own cloud project platform, built and run in-house. Chat with the team, share working files and drafts, comment, follow tasks and progress in real time, and give your whole team access to the final results, from any device. | ||||
DEISO Drive?Confidential ESG data is exchanged through DEISO’s own secure file system, not through public file-sharing services, and access is limited to your project team. | ||||
DEISO Visly?DEISO’s visual storytelling platform. It turns your ESG results into clear diagrams and dashboards, with AI-supported insights from DEISO AI. | ||||
| Training, handover and support | ||||
KPI workbook and templates handed over?The full KPI workbook with formulas and the data collection templates, so your team can run the next cycle. | ||||
Training: frameworks and materiality?Training on the reporting frameworks and the materiality method. Trainees are trained as one group. | Up to 2 trainees | Up to 3 trainees | ||
Training: ESG data and workbook?Training on the data collection process and the KPI workbook. | Up to 2 trainees | Up to 3 trainees | ||
After-report support?Questions answered and results explained after the report, whichever limit is reached first. | 1 month, up to 10 hours | 2 months, up to 15 hours | ||
| Commercial terms | ||||
Basic fee credited?The Basic fee is credited toward Pro if you proceed within an agreed period. | ||||
Additional support hours?Extra support hours can be added at any point, on request. | Available | Available | Available | Available |
Confidentiality?An NDA is available for every plan. | ||||
- Prices are starting prices for one entity and one reporting year; Expert+ covers up to 3 entities. Larger groups are quotation based.
- Third-party assurance fees are not covered by DEISO. Assurance is carried out by an independent assurance provider and paid by the client directly; DEISO prepares the report for assurance and coordinates the process.
- GRI Report Services fees, if used, are paid to GRI directly.
- A full Scope 1–3 GHG inventory is a separate DEISO GHG accounting plan.
- Timelines are counted from receipt of complete data. Training is run for the trainees as one group.
ESG consulting and reporting with DEISO: frequently asked questions
What does DEISO do in ESG consulting and reporting?
DEISO is a Tokyo-based consulting firm that builds governance-ready ESG systems and reports. We select the applicable frameworks, assess materiality, structure ESG data and indicators, draft the report and prepare it for third-party assurance, with environmental and social metrics backed by DEISO's own LCA, S-LCA, GHG and EPD evidence.
Which ESG reporting frameworks does DEISO work with?
DEISO works with the GRI Standards, IFRS S1 and S2 from the ISSB, CSRD and the European Sustainability Reporting Standards (ESRS), Japan's SSBJ standards and CDP, and identifies which ones apply to your organisation.
What is a double materiality assessment?
A double materiality assessment looks at sustainability topics from two directions: impact materiality, meaning how your organisation affects people and the environment, and financial materiality, meaning how sustainability matters affect your organisation's financial position. ESRS requires it, and DEISO documents the results in an impacts, risks and opportunities register.
Can DEISO support CSRD and ESRS reporting?
Yes. The DEISO ESG Expert and Expert+ plans include an ESRS-aligned double materiality assessment, ESRS datapoint mapping and assurance readiness. DEISO prepares the report for assurance; assurance itself is carried out by an independent provider.
How do LCA, S-LCA and GHG data strengthen ESG reporting?
They give ESG claims quantified, system-based evidence. LCA and EPDs support product and environmental metrics, S-LCA supports social and supply-chain indicators, and GHG accounting supports climate disclosures, so the report rests on data that holds up under investor and assurance review.
Does an ESG plan include a GHG inventory?
ESG plans use your existing GHG data. A full Scope 1 to 3 GHG inventory is a separate DEISO GHG accounting plan, which can run alongside the ESG engagement.
Is third-party assurance included?
No. Third-party assurance fees are not covered by DEISO. Assurance is carried out by an independent assurance provider and paid by the client directly; DEISO prepares the report for assurance and coordinates the process.
How much does ESG consulting with DEISO cost?
DEISO ESG plans start from USD 9,500 for ESG Basic (readiness), USD 32,000 for ESG Pro (ESG report), USD 44,000 for ESG Expert (adds double materiality, datapoint mapping, assurance readiness, training and support) and USD 59,000 for ESG Expert+ (group programmes up to 3 entities), for one reporting year. Assurance fees are not included. See the plan comparison.
How long does an ESG engagement take?
ESG Basic typically takes 3 to 5 weeks, ESG Pro 2 to 4 months, ESG Expert 3 to 5 months and ESG Expert+ 4 to 6 months, counted from receipt of complete data and stakeholder availability.
How do I start an ESG engagement with DEISO?
Send a short description of your organisation, the frameworks or requirements you face, your reporting year and any existing ESG data to or through the quotation form. DEISO replies with scoping questions and a proposal covering frameworks, materiality approach, timeline and outputs.
Start with Mirai, DEISO’s AI guide
Describe your objective or project to identify the right execution path.
Mirai guides you to the most relevant next step — from execution and technical review to verification readiness and sustainability operating system delivery.
How to use DEISO Mirai





