An event report published by Hitachi R&D on 2026-07-30 covering the third open forum of the Hitachi-AIST CE Lab: opening addresses by the presidents/CTOs of both parents, a keynote by the chair of the Circular Economy Association, four lab presentations, a two-topic panel with METI, academia and finance, and closing remarks. ~8,100 words.
The most informative single source in the repo on this track — not because of CVP, which it restates, but because it is where the lab describes its other work: the second half of the proposal, its DPP positioning, and the information failure it has actually gone and measured. Fetched on Tell Münzing’s pointer; there is no PDF edition, so the source file is a rendered text capture.
The lab’s three themes, and who runs them
Director Katsumasa Miyazaki; Deputy Director Keijiro Masui. Three research themes: (1) a grand design — an articulated ideal future for a CE society and a transition path to it; (2) digital solutions to reach it; (3) standardization strategy and policy recommendation, framed as “both offensive and defensive rule-making … that strengthen the international competitiveness of Japanese companies”.
So CVP is one output of theme 3, not the lab’s programme. ⟨Inference: this resolves the shape of the thing. The wiki had the lab as a metric factory with a standards pipeline attached; it is a three-theme research programme in which the metric is one of two “forms of value visualization” inside one theme.⟩
Presenters: Masahide Ban (Hitachi) and Yoshiko Takenaka (AIST) on the roadmap; Ippei Kono and Yoshiyuki Furukawa (AIST) on digital solutions; Osamu Hoshino, Yuki Murasato (Hitachi) and Koshi Kamigaki (AIST) on rule-making. Moderators Ken-ichi Miyamoto (Vice CTO, AIST Solutions) and Shinichi Taniguchi (Hitachi). The rule-making trio are the same people who carry the proposal into the CE Association study group.
The second half of the proposal, found: residual-value grading
Hoshino frames rule-making around two forms of value visualization. The first is CVP. The second, presented by Kamigaki, is “grading for the visualization of residual value” — see its own page: Residual-value grading.
In short: a study of plastic-recycling operations analysing “what types of data support value transfer, and the meaning and context in which such data are utilized”, which found two failures — demand-side end-use information not reaching collectors and sorters, and “information regarding product quality and provenance fails to reach stakeholders on the downstream sector effectively” — and three requirements: basic transactions, “upstream-downstream information partnership and traceability”, and interoperability “by referencing existing international standards”.
⟨Inference: this is the half the white paper calls “data model standards for information on goods, including quality-related information”, under a different name. The vocabulary the earlier search found missing — quality, provenance, traceability — is all present here. The wiki’s open task 17 was looking for the right thing in the wrong documents: the CVP literature does not describe it because it belongs to the other work stream.⟩
Where Japan positions itself against the DPP
Hoshino’s rule-making mapping covers Europe, Japan, the US and the international bodies, and concludes:
“Europe is taking the lead in areas such as information disclosure through DPPs and the development of data spaces on the upstream sector of the CE loop. These developments may influence future approaches to data connectivity. At the same time, we identified areas in which Japan could make meaningful contributions to international standardization, including data integration on the downstream sector and the Common Data Dictionary (CDD), an online metadata registry for standardized classifications and formalized product descriptions.”
⟨Inference: this is a division of labour, not a competing standard. Europe holds the upstream disclosure instrument; Japan proposes to hold the downstream integration layer and the dictionary both sides would reference. It also tells you the intended venue for the data-model half — CDD is the IEC’s registry, so the second half plausibly runs through IEC rather than ISO/TC 323. Hitachi’s seat on the IEC SMB, recorded on the CECRL page, stops looking incidental.⟩
⟨Background: the Common Data Dictionary is IEC’s registry of standardized product classes and properties, built on the IEC 61360 series.⟩
CVP, restated — and the dummy-data caveat lifted
Murasato’s presentation restates the metric and the value-network extension (“excludes duplicated amounts arising from transactions within the network in order to avoid the double counting”), and adds a case study the written sources do not carry:
“We conducted a case study for dismantling, shredding and sorting operators involved in a magnet-remanufacturing business. The results confirmed that improvements in efficiency and output quality achieved through the introduction of advanced sorting equipment were reflected in higher CVP values. This demonstrated that the metric can appropriately capture the benefits of capital investment using real operational data.”
⟨Inference, and a tension the wiki should hold open rather than resolve: the April 2026 research report works in dummy data, and CVP’s denominator contains no capital term — capital enters only as depreciation. The claim here is not that the formula gained one, but that an investment’s effects (throughput and output quality) show up in the ratio in a real case. Both can be true: an operating ratio can register the consequences of capital spending without measuring the spend. What is not shown anywhere is the figure itself, the operators, or the period. Treat “validated on real data” as asserted, not evidenced.⟩
The information failure, stated by Hitachi’s own business side
Panelist Hiroko Shinkai (Green Digital Transformation Division, Hitachi) — the commercial side, not the research side:
“Even when companies wish to use recycled materials, they often face challenges related to inconsistent quality, supply volume and pricing, while data exchange across companies remains underdeveloped.”
and:
“Unless information on the quality, provenance, quantity, pricing, logistics, etc. of recycled materials can be effectively shared and integrated, CE businesses will not be commercially viable. The EU’s Digital Product Passport (DPP) and Battery Passport initiatives provide useful points of reference. However, what matters is not the sheer number of data fields, but whether the information required by the next player in the value chain can be transmitted seamlessly and without interruption.”
Junichiro Mimaki (Director, Resource Efficiency and Circular Economy Division, METI) on why it does not flow:
“Data is a strategic asset for companies. However, advancing the CE requires a shift in mindset by recognizing the value of collecting and sharing information that is useful to other stages of the CE loop. Achieving this will require deeper trust and stronger collaborative relationships among companies.”
⟨Inference: the diagnosis is identical to SINE’s and the remedy is not. Mimaki names the obstacle correctly — data is a strategic asset, so firms withhold it — and then asks for more trust, i.e. asks the parties to stop acting on the interest he has just identified. That is the gap a confidentiality-preserving construction fills: it does not need the mindset to shift. Shinkai’s sentence is the better entry point still, because “not the number of data fields but whether what the next player needs arrives” is an argument about sufficiency and transmissibility, which is exactly the shape of a selective-disclosure claim.⟩
Personnel union between the association and the committee
Stated in the first person by the participants themselves:
| Person | Association role | ISO role |
|---|---|---|
| Takashi Nakamura | Chair, Circular Economy Association | Head of Japan’s domestic committee for ISO/TC 323 |
| Yoshiaki Ichikawa (Shinshu Univ.) | Chief coordinator, International Collaboration and Standardization WG of METI’s Circular Partners | Chair, ISO/TC 323 WG2; worked on ISO 59010, now in the “reactivated working group … advancing discussions on two new standards in parallel” |
| Kotaro Shimizu (Mitsubishi UFJ R&C) | Co-founder of the Circular Economy Association, “as a forum for developing CE standards that reflect the perspectives and needs of industry” | TC 323 contributor to ISO 59010 and ISO 59011, “which addresses value networks within the CE” |
⟨Inference: the route from the association to the ISO annex is not a submission process, it is the same people in a different room. This is the asset SINE does not have and the reason to enter as a contributor through them rather than beside them. It also confirms, from a third voice, that ISO/AWI 59011 is the value-network standard — the annex target named in the white paper.⟩
Nakamura’s keynote: standards as trade instruments, value as information
The keynote by Takashi Nakamura states the strategic frame plainly: international standards “have increasingly been used strategically as nontariff barriers in recent years, particularly in relation to environmental requirements”, so standardization “requires a clear strategy regarding what should be standardized and how”, including “the understanding and cooperation of not only businesses but also financial institutions”.
On the CE’s economics he poses the question the whole CVP programme answers: “the question still remains as to whether a CE can truly function as an economy and where value added is generated within it” — and concludes that “Achieving this requires network-oriented thinking”, with DX to “visualize information associated with the movement of goods and materials”.
And, explicitly:
“In a CE, it is important to recognize that value increasingly shifts from physical products to information. Material platforms such as digital product passports (DPPs) are expected to become promising new business opportunities. However, a major challenge lies in establishing effective information sharing and coordination not only across forward supply chains … but also with reverse supply chains … What is needed is an integrated system that takes a holistic view of resource circulation across the entire value chain.”
He also records that the ISO 59000 series, published May 2024, “took the unusual step of being slated for review immediately upon its adoption”.
⟨Inference: the keynote is the bridge between the two halves. “Value shifts from physical products to information” is the premise that makes a data-model standard the strategic object and the metric its accounting layer — which is why the proposal has two halves at all.⟩
The rest of the programme, briefly
- Roadmap (Ban, Takenaka). ~20,000 simulated future scenarios reduced to nine types, three branching factors (regulatory/institutional rules, technological innovation, behavioural change); the chosen ideal future is explicitly “not technology-led”. Three current value-network problems: difficulty collecting end-of-life products, high circular operating costs, limited diffusion. Proposed incentives at the rule stage include “digital certification of proper disposal” and “stable access to recovered resources with assured quality and quantity”. ⟨Inference: both are verifiable-claim instruments in all but name, and they are proposed as incentives — i.e. the lab already treats checkable quality as the thing that unlocks participation.⟩
- Digital solutions (Kono, Furukawa). A life-cycle simulator modelling material flows, CO₂ and economic value per stakeholder, with a user-behaviour module predicting collection rates; validated on Hitachi Industrial Equipment Systems screw compressors. Three downstream technologies: image-based model identification where nameplates are unreadable (97% accuracy on automotive parts), a low-cost wireless sensor system for electricity and operating time, and per-unit process-level environmental data. Finding: remanufacturing CO₂ is “about twice as high as estimates based solely on material considerations”, yet still 20% below new-component production. ⟨Inference: the sensor system and the per-unit process data are the same category of artefact as the signed-sensor-data case in the SINE dossier — measurements taken at a site, used by someone who was not there. The forum does not ask how a counterparty verifies them.⟩
- Panel, topic 2 (economics vs. environment): Ichikawa — “Quality standards of secondary materials remain underdeveloped globally. So, establishing such standards would create significant value”, plus eco-point schemes requiring “strict evaluation criteria and independent third-party certification”, and the wish that circularity performance become visible to investors “as has already occurred in the field of climate change”. Shinkai — capital flows into CE lag decarbonisation because of “the absence of widely accepted yardsticks for assessing the economic value of CE activities”. Shimizu — the loop breaks wherever one party is “left holding an unprofitable losing ticket”. Hosoda — caution about “European-style universal rules without adaptation”, and soft law over hard law.
Cross-references
- Residual-value grading — the second half, first described here
- Circular Value-added Productivity (CVP) — the first half
- Hitachi-AIST CECRL — the lab, its themes and people
- Circular Economy Association — Nakamura, Shimizu, and the committee overlap
- Value networks and the ISO 59000 series — ISO 59011 confirmed as the value-network standard
- Digital Product Passport — the upstream/downstream division of labour
- Confidentiality gap in carbon accounting — Mimaki and Shinkai state the gap
- Hitachi, Ltd. — Green DX division, Industrial Equipment Systems
- CE Association white paper (2026) · CVP research report (April 2026) · Driving Circularity Transitions (June 2025)
Sources
sources/hitachi/2026-07-30-h-aist-ce-lab-third-open-forum.md— rendered text capture of https://rd.hitachi.com/_ct/17854147 (published 2026-07-30, captured 2026-10-16 withagent-browser; no PDF edition exists). Navigation, cookie banner and footer stripped; article text verbatim, figure captions retained as lines.- ⟨Provenance note: this is an event report written by Hitachi R&D’s editorial side, not a paper by the presenters. Quotations are the report’s rendering of what was said, including the first-person passages. Figures shown at the forum are not reproduced in it, so no numeric claim here can be checked against a table.⟩