How long does it take to generate a Carbon Passport?

Most companies complete their Carbon Passport in under 20 minutes using their annual utility bills and travel records.

How much does DeCarbonOPS cost?

DeCarbonOPS is free for one annual report per year — no credit card required. Paid plans start at €99/month.

What is CSRD and why do suppliers need to comply?

The EU Corporate Sustainability Reporting Directive requires large companies to report supply chain emissions. They ask every significant supplier for verified carbon data.

Which platforms accept a DeCarbonOPS Carbon Passport?

DeCarbonOPS Carbon Passports are accepted by CDP, EcoVadis, SAP Ariba, Coupa, and CSRD auditors.

CARBON

Q: What is a Carbon Passport?

A Carbon Passport is a verified, shareable document showing your company's Scope 1, Scope 2, and key Scope 3 greenhouse gas emissions, calculated using DEFRA 2023 emission factors and the GHG Protocol.

DeCarbonOPS® generates a verified emissions report your enterprise clients accept. CSRD-ready in 20 minutes.

↓

PASSPORT.

TODAY.®

Verified emissions report your enterprise clients accept. CSRD-ready in 20 minutes.

Get started free

Free · GHG Protocol · CSRD-Ready · DEFRA 2023

See how it works Get started free (SCROLL)

CARBON

PROOF.

CARBON

PROOF.

FOR EVERY SUPPLIER.®

Our mission.

Turn a 6-week, €8,000 consultant project into a 20-minute self-service form.

Every EU supplier is now being asked for carbon data by their largest clients. CSRD makes it mandatory. DeCarbonOPS® makes it instant — verified emissions, shareable URL, accepted by auditors and procurement platforms worldwide.

Start for free

GHG Protocol Corporate StandardDEFRA 2023 Emission FactorsScope 1 · Scope 2 · Scope 3CSRD-Ready OutputEU Data Hosting · GDPRCDP & EcoVadis AcceptedSAP Ariba Compatible20-Minute SetupGHG Protocol Corporate StandardDEFRA 2023 Emission FactorsScope 1 · Scope 2 · Scope 3CSRD-Ready OutputEU Data Hosting · GDPRCDP & EcoVadis AcceptedSAP Ariba Compatible20-Minute SetupGHG Protocol Corporate StandardDEFRA 2023 Emission FactorsScope 1 · Scope 2 · Scope 3CSRD-Ready OutputEU Data Hosting · GDPRCDP & EcoVadis AcceptedSAP Ariba Compatible20-Minute Setup

500K+

EU suppliers under CSRD

Mandatory from 2025

20 min

To your passport

Average completion time

€8,000

Saved vs a consultant

Average consulting fee

€0

To get started today

Free for one annual report

How it works

Rigorous data.
Real outcomes.

Enter your data

Answer guided questions about electricity, fuel, travel, and waste. Every field has a tooltip. Takes 20 minutes on average.

Auto-calculated

DEFRA 2023 emission factors and GHG Protocol methodology applied automatically. Scope 1, 2 & 3 in one pass.

Passport generated

A permanent verification URL — share it with any client, paste it into SAP Ariba, attach it to a tender. Always live.

Win more contracts

Enterprise buyers gate suppliers by carbon compliance. A verified passport removes the blocker before they even ask.

Start free

Why DeCarbonOPS

Suppliers need carbon data.
Not another expensive consultant.

Traditional consultant

6 weeks

Average delivery time

€8,000

Average project cost

PDF report

Not accepted digitally

Annual redo

Pay a consultant again

DeCarbonOPS

20 min

Same-day passport

€0

Free to get started

Verified URL

Accepted everywhere

Always live

Update anytime, instant

Start free

Methodology

Every number is traceable.
No black boxes.

DEFRA 2023 emission factors + GHG Protocol Corporate Standard — the same methodology used by CSRD auditors and EcoVadis assessors worldwide.

GHG Protocol

Corporate Standard

DEFRA 2023

Emission factors

Scope 1–3

Full GHG coverage

EU country grid factors

20 min

Average completion

€0

First passport free

Articles · Press

Read our guides

View all

How-To

How to Answer a Supplier Carbon Questionnaire in Under an Hour

Your client just sent you a sustainability questionnaire. Here's exactly what data you need, where to find it, and how to respond — including the DEFRA emission factors you'll need.

2026-06-01

7 min read

Education

What Is a Carbon Passport? Everything European Suppliers Need to Know

6 min read

Compliance

CSRD for SMEs in 2025: What Small Suppliers Actually Need to Do

7 min read

Education

How to Calculate Scope 1 Emissions for a Small Business (With Examples)

8 min read

How-To

SAP Ariba Sustainability Questionnaire: A Complete Supplier Guide

7 min read

All guides

Ready to start?

Generate your Carbon Passport today.

Free forever for one report. No credit card. No consultant. Just your verified emissions profile, ready to share.

Request a passport See pricing

GHG Protocol · DEFRA 2023 · GDPR Compliant · EU Data Hosting

CARBON

PASSPORT.

TODAY.®

CARBON

PROOF.

CARBON

PROOF.

FOR EVERY SUPPLIER.®

Rigorous data.Real outcomes.

Suppliers need carbon data.Not another expensive consultant.

Every number is traceable.No black boxes.

Read our guides

How to Answer a Supplier Carbon Questionnaire in Under an Hour

What Is a Carbon Passport? Everything European Suppliers Need to Know

CSRD for SMEs in 2025: What Small Suppliers Actually Need to Do

How to Calculate Scope 1 Emissions for a Small Business (With Examples)

SAP Ariba Sustainability Questionnaire: A Complete Supplier Guide

Generate your Carbon Passport today.

Rigorous data.
Real outcomes.

Suppliers need carbon data.
Not another expensive consultant.

Every number is traceable.
No black boxes.