Dr. Oliver Geden

Methodology focus

Senior Fellow at the German Institute for International and Security Affairs (SWP). Vice-Chair of Working Group III of the IPCC Seventh Assessment Report (AR7). Lead author of the State of CDR annual report. The single highest-leverage individual in global CDR policy governance.

Trellison / LedgerWell intersection. IF Geden references LedgerWell methodology in AR7 or State of CDR, the market re-prices around it. Highest-leverage single target.

Affiliation

SWP Berlin

Role

Senior Fellow; IPCC AR7 WGIII Vice-Chair

Axis

Policy & Governance

Tier

Tier 4

Selected publications

2024 — State of Carbon Dioxide Removal, 2nd edition. Oxford Net Zero / Smith School.
Multiple — IPCC AR6 WGIII CDR chapters. IPCC.
Ongoing — SWP policy briefs on CDR and Article 6. SWP.
Ongoing — IPCC AR7 WGIII work. IPCC.

Alignment with proof packs

Their methodology / role	Proof-pack / Trellison fit
IPCC AR7 authorship	Proof-pack citation in AR7 = global policy re-pricing
State of CDR report	Proof-pack referenced in annual synthesis
European policy influence	SWP advisory to German government, EU policy

Collaboration concepts

Concept 1

State of CDR report: proof-pack implementation reference

Inclusion as an implementation instance in the annual report.

Concept 2

IPCC AR7 WGIII technical input submission

Formal submission of proof-pack methodology as implementation reference.

Concept 3

SWP briefing for German Federal Government

Targeted briefing on proof-pack adoption for German climate finance.

Outreach approach

Proposed opening message

Subject: An implementation reference for your policy framework

Dear Oliver Geden,

Your role in framing CDR policy has made your published prescriptions an operating specification for implementation work. Trellison Institute has been building a per-tonne open-data verification instrument — the proof pack — that tries to implement that specification.

I would welcome a 30-minute conversation to show you the current alpha. We are not asking for endorsement; we are asking for methodology critique and, if useful, an offer of alpha access for your active work. Independent negative evaluations would be published alongside positive ones.

A one-page methodology brief that maps your work to proof-pack schema fields — with gaps flagged honestly — is attached.

With respect,
Rob Stillwell
Director, Trellison Institute

What we do not ask for

Endorsement of Trellison, LedgerWell, DaedArch, or any affiliated entity.
Exclusivity or first-look rights on research findings.
Unpaid labour. Any advisor role is compensated with a modest honorarium and disclosed on the record.

Disclosure: Compiled from public sources through April 2026. Inclusion does not imply endorsement, affiliation, or reciprocal interest. Corrections: About.

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