The Carbon Ledger Prize

Real tonnes. Verified impact. Lasting integrity.

Recognizing carbon offset and removal projects that demonstrate exceptional additionality, permanence, measurement integrity, and co-benefits — evaluated by an independent, cross-disciplinary panel.

Program · November 2026

We'll only email you about your project's consideration. No third parties.

01
Award Categories

Four pathways. One standard of integrity.

The Prize will evaluate projects across the full spectrum of carbon action — from soil to silicon — under a single, transparent rubric.

01

Nature-Based

Afforestation · Soil carbon · Blue carbon

Ecosystem-based sequestration where quantification, permanence, and community safeguards are inseparable from the credit.

02

Engineered

DAC · Enhanced weathering · Biochar · BECCS

Technological removal pathways evaluated on lifecycle rigor, energy accounting, and durable storage.

03

Avoidance

Methane · Cookstoves · REDD+ with new MRV

Avoidance projects that materially advance baseline setting, leakage controls, and modern measurement.

04

MRV & Digital

Monitoring · dMRV · Registry innovation

Tools, protocols, and platforms that raise the ceiling on transparency and verifiability across the market.

02
The Evaluation Process

How evaluators are selected — and how integrity is preserved.

Five stages, published transparently, so every judgment is traceable to the panel that made it.

  1. 01

    Open Call & Application

    Evaluators submit a CV, declared domains — soil science, LCA, atmospheric measurement, carbon finance, MRV/dMRV, community safeguards — and a statement of expertise. The Prize actively seeks disciplinary and geographic diversity, including reviewers from the regions where projects are sited.

  2. 02

    Domain Classification

    Applicants are tagged by specialty so every project is matched to evaluators covering each claim type. A DAC submission, for example, is reviewed by an engineer, an LCA specialist, and a carbon finance reviewer.

  3. 03

    Independence & Conflict Screening

    Mandatory disclosure of any financial interest, project affiliation, or advisory link. Evaluators are firewalled from any project in which they hold a stake, and the screening record is published transparently.

  4. 04

    Panel Assembly & Calibration

    Each project receives at least three cross-disciplinary evaluators. A calibration brief and a sample scored submission align standards across the panel before scoring opens.

  5. 05

    Technical Review Panel — Finals

    Senior evaluators interrogate finalist projects, review third-party validation evidence, and reach consensus recommendations for the awards committee.

03
Scoring Rubric

100 points. Six criteria. No hidden weights.

Every submission is scored against the same public rubric. Weights reflect what matters most for genuine climate impact.

Additionality

Would these tonnes exist without the project or credit revenue?

20 pts

Measurement & MRV rigor

Quantification accuracy, uncertainty handling, and use of dMRV.

20 pts

Permanence & reversal risk

Durability of storage, buffer pools, and leakage controls.

20 pts

Co-benefits & safeguards

Biodiversity, community equity, FPIC, and SDG alignment.

15 pts

Scalability & cost

Cost-per-tonne trajectory and replicability across contexts.

15 pts

Transparency & verifiability

Data openness and third-party auditability.

10 pts
Total100 points
04
The Evaluation Panel

Expertise across carbon science and markets.

The six panelists below are named subject to agreement and independence screening.

Evaluators commit approximately 10–15 hours across a four-week review window; senior Technical Review Panel members add a half-day Finals session. Evaluators receive formal credentialing, named recognition with consent, and inclusion in the published methodology.

Cornélia Rumpel

Research Director · CNRS

Soil carbon & nature-based sequestration

France

Panelist

LinkedIn ↗

Sabine Fuss

Research Department Co-Head · Potsdam Institute for Climate Impact Research

Carbon removal economics & policy

Germany

Panelist

LinkedIn ↗

Marianne Tikkanen

Co-founder · Puro.earth

Engineered removal standards & verification

Finland

Panelist

LinkedIn ↗

Lambert Schneider

Research Coordinator, International Climate Policy · Oeko-Institut

Carbon markets & credit integrity

Germany

Panelist

LinkedIn ↗

François MEGRET

Executive Director, Carbon Trading · First Abu Dhabi Bank

Carbon markets & trading

United Arab Emirates

Panelist

LinkedIn ↗

Isa Mulder

Expert on Global Carbon Markets · Carbon Market Watch

Community impacts & rights-based safeguards

Belgium

Panelist

LinkedIn ↗