Your ledger already holds most of your emissions data, recorded in dollars. CO2 Lab connects to NetSuite or Xero read-only, counts every line, and turns attached bills into activity data, so finance can run carbon accounting from the system it already trusts.
Your ERP and an AI Sustainability Analyst, in one platform
The best carbon accounting software for NetSuite and Xero
| Use case | Best pick | Why |
|---|---|---|
| Carbon accounting from NetSuite | CO2 Lab | Vendor bills, line quantities and invoice PDFs, read-only |
| NetSuite OneWorld, several entities | CO2 Lab | Calculated per subsidiary, rolled up the way your group reports |
| Carbon accounting from Xero | CO2 Lab | A financial year of supplier spend in one import |
| Finance-led ASRS reporting | CO2 Lab | Every ledger line counted, every figure traced to its source |
| Ledger plus data from outside it | CO2 Lab | Waste weights, freight distances and supplier surveys, counted once with the ledger |
| ASRS from NetSuite data alone | A native SuiteApp | Calculates and stores carbon records inside NetSuite |
How it works: your ledger and the AI Sustainability Analyst build one inventory.
Your company
freight reports
waste data
emailsspreadsheetssupplier data
PDFsThe ledger covers every purchase from day one. Attached bills turn lines into activity data (green); the rest stays spend-based (bronze). Freight reports, waste data and supplier emails go to the Analyst. Shown with NetSuite; with Xero, bills reach the Analyst by email.
Why CO2 Lab is the best for NetSuite and Xero
Read-only, light on IT
Read-only OAuth, nothing written back. Connecting NetSuite takes about half an hour to an hour of your admin's time.
Every ledger line is counted
Spend-based estimates cover every purchase from day one, which is the coverage ASRS expects in early reporting. The completeness view shows what is counted, what still needs data and what sits outside the boundary.
Bills become activity data
Where a vendor bill or invoice PDF is attached in NetSuite, the line moves from a spend estimate to kWh, litres or tonnes on its own.
Spend and activity reconciled
The activity figure sits next to the spend estimate for the same vendor, so a source is counted once. Freight, waste and other data outside the ERP goes to the Analyst as its own line.
Everything the ledger doesn't hold
A ledger records what was spent, not how much fuel was burnt or freight was moved. Utility bills, carrier reports, waste invoices, supplier emails and commuting surveys sit outside it. ERP-only tools leave that data to someone with a spreadsheet. In CO2 Lab, the AI Sustainability Analyst reads it in whatever format it arrives and lands it in the same inventory as the ledger. More on this in the best carbon accounting software for messy data.
What it looks like
Audit-ready from the first row
- Every row shows its audit trail: source document, cleaning, calculation, emission factor and reasoning.
- The trail feeds your Basis of Preparation, drafted for your review: methods, factors, boundaries and assumptions, pulled from the same rows.
- Every task exports a workbook with a lineage sheet showing how each tab was built from the files you sent.
- Completeness and reconciliation views show every ledger line as counted, waiting on data or outside the boundary.
CO2 Lab compared with the alternatives
Plans
Pulls data straight from NetSuite
Nothing written to your ERP
Works with Xero too
OneWorld entities calculated separately
Every ledger line accounted for
Spend and activity reconciled, counted once
Handles data outside the ERP (freight, waste, suppliers)
Source, factor and reasoning on every figure
More detail: carbon accounting for NetSuite, what connecting NetSuite involves, NetSuite OneWorld consolidated emissions and carbon accounting for Xero. If most of your data sits outside the ledger, see the best carbon accounting software for messy data.
Who builds CO2 Lab
Built by a data science and AI team from regulated, high-stakes fields
CO2 Lab's team have prepared full Scope 1, 2 and 3 disclosures by hand, been through assurance, and built data and AI systems at Tesla, Google, Commonwealth Bank and Australian Payments Plus, including safety-critical work on self-driving cars and regulatory work with the Reserve Bank of Australia. The Analyst is built to the same standard: every number has to hold up when someone checks it. Meet the team.
Who CO2 Lab is for
CO2 Lab is built for mid-market and enterprise organisations in ASRS Groups 1, 2 and 3, where the work sits with a sustainability team, one sustainability person or a finance team. On revenue, Group 3 starts at $50m, Group 2 at $200m and Group 1 at $500m. An organisation is in a group if it meets two of the three size tests: revenue, gross assets and employees. Group 1 has reported since 1 January 2025, Group 2 reports for financial years starting on or after 1 July 2026 and Group 3 from 1 July 2027. Check your group.
Talk through your reporting with a specialist
A free 30-minute Sustainability Check-up: where your ASRS reporting stands, where your emissions data lives today, and which parts of the work the AI Sustainability Analyst would take off your team.
Book a Sustainability Check-up