Prepare your carbon data once
Carbon Giant turns the invoices and spend already in Excel, Xero, QuickBooks or Sage into audit-ready emissions reports, built for UK SMEs, no carbon expertise needed.
One verified profile. Answer every request once.
Carbon Passport
Carbon Giant Ltd • FY 2025/26
Carbon Passport
Carbon Giant Ltd • FY 2025/26
Build your Carbon Passport once. Share a secure, audit-ready link with clients, auditors and procurement teams instantly.
Most of your footprint is in your supply chain, and it's the hardest to measure.
Fragmented data, manual mapping, and inconsistent methodologies create compliance risk. Most teams spend months gathering it, and still lack confidence.
Legacy Reporting (The Old Way)
- Scattered data across spreadsheets, invoices, emails and supplier files.
- Manual carbon mapping against complex standards and emission factors.
- Repeated work for every client request, tender or audit.
Carbon Giant (The Modern Approach)
- Connect your existing tools and bring spend data into one place.
- Automatically categorise and calculate using consistent carbon methodologies.
- Create a reusable Carbon Passport for clients, tenders and auditors.
One platform for all your carbon reporting
Built for SMEs, not consultants. You shouldn't need a big budget to prove responsibility.
Carbon Giant creates a single source of truth for your entire organisation
Finance And Compliance
Map spend data or activity data to verify GHG emissions with granular, traceable methodologies (Defra emissions factors).
Procurement And Supply Chain
Stop sending manual surveys. Automate scope 3 carbon specific calculations across your entire supply chain instantly.
Operations And Sustainability
Automated reporting, connect your existing systems and replace fragmented PDFs with automated data pipelines.
Connect your financial systems in seconds
Sync your accounting software or drag and drop raw invoices. Carbon Giant extracts, cleans, and standardises your source data automatically.
Automatically categorise against verified emissions factors
Auto-categorise spend against official carbon factors with high accuracy — no manual mapping.
The passport
Share a link with clients, tenders or auditors — no more rebuilding the same report from scratch.
Start with what you have. Improve over time.
Carbon Giant works with the data you already have. Progress from financial estimates to audit-verified primary evidence without changing or inputting data multiple times.
When primary data is not available yet, the platform maps financial spend to estimate emissions, providing an immediate baseline that matures as better data arrives.
A practical starting pointReal usage data (kWh, liters, kilometers) mapped to verified emission factors. Strong, defensible numbers most auditors expect.
Strong and widely acceptedBacked by supplier certificates and third-party verification. The highest confidence standard for regulatory disclosures and institutional audits.
Best for auditsYour data belongs to you.
We read your data to calculate emissions - we can't edit, move, or delete it. You control access. Export or delete everything anytime.
Common questions, answered.
No. We handle methodology and factors. You bring data and review results.
Yes. We use official DESNZ/DEFRA factors with a full audit trail.
Connect accounting software or upload invoices/PDFs/CSVs. No special format required.
Spend-based uses invoices as a proxy. Activity-based uses usage data (kWh, km). We help you improve over time.
Yes. Better data improves reports automatically. Corrections are remembered for future reports.
Data is stored in the UK (AWS London). You own it. Export or delete anytime. We comply with UK GDPR.
Yes. Share a single verified profile. Stop rebuilding the same report.
Your next report is due. Let's make it easy.
Request Pilot AccessCurrently onboarding 15 UK companies