EnergyLab Charge program
SAF certificate reconciliation API

The compliance infrastructure for sustainable aviation.

Corporate travel platforms, carbon accounting software, and ERP sustainability modules need to reconcile SAF certificates across CORSIA, EU RefuelEU, UK, Singapore, and Australian GO schemes. ZerraLedger is the interoperability layer that makes this possible.

Request API access How it works

Australian GO — CER data connected
CORSIA eligible fuels — ingestion in development
EU · UK · Singapore — roadmap

POST /v1/certificates/reconcile
// Reconcile SAF certificate against CORSIA obligation
 
const result = await zerraledger
  .certificates
  .reconcile({
    scheme: 'AU_GO',
    obligation: 'CORSIA',
    route: 'SYD-LHR',
    period: '2025-Q4'
  });
200 OK 43ms
"status""reconciled"
"certificate_id""AU-GO-2025-04821"
"coverage_pct"87.4
"gap_tonnes_co2"12.6
"scheme_verified"true
Target platforms
CTM Navan Watershed Persefoni SAP Green Ledger Workiva Oracle Fusion
Global coverage

One API. Every SAF scheme.

As Scope 3 reporting mandates grow globally, the reconciliation surface grows with them. ZerraLedger normalises SAF certificate data across all major jurisdictions into a single, developer-friendly REST API — the interoperability layer the industry is missing.

Building
Australian GO
CER Guarantee of Origin — ingestion layer in development, CER data connected
Building
CORSIA
ICAO eligible fuels ingest — cross-scheme obligation mapping
Roadmap
EU RefuelEU
European SAF blending mandates — airline and fuel supplier compliance
Roadmap
UK SAF mandate
DfT blending obligations — UK-specific certificate tracking
Roadmap
Singapore
CAAS SAF framework — Changi hub and Asia-Pacific routing
5
SAF schemes in scope — Australian GO, CORSIA, EU, UK, Singapore
1
REST API endpoint to reconcile across all of them — no bespoke integrations per jurisdiction
0
Derived or estimated values — every certificate traced to government-issued source data
Building SAF compliance into your platform?
ZerraLedger is in early access. We're working with travel and carbon accounting platforms to shape the API around real integration needs.
No commitments — we'll be in touch to understand your use case.