We’ve released an updated set of spend-based emission factors for New Zealand.
They are designed to help businesses, financial institutions and individuals estimate greenhouse gas (GHG) emissions from their purchases, investments and consumption.
Read on for more info, or click here to watch our recent webinar introducing the updated and audited emission factors for New Zealand. It explains what’s new in our latest version, including an improved approach for commodity factors, updated figures and a revised methodology report.
Tailored to New Zealand
Our emission factors support faster scope 3 reporting by linking emissions to dollars spent. This makes it easier to work with the financial data organisations already hold. They are built on local data from Statistics New Zealand, Ministry for the Environment and the Reserve Bank of New Zealand. Import data comes from a global database.
Our 2025 release has undergone an external peer review by Market Economics Ltd and the commercial version (covering the 2023 year) was audited by McHugh & Shaw.
What’s included
The latest release includes:
- Industry-level factors (basic prices) – for spend aligned to industries, excluding taxes and retail margins
- Commodity-level factors (basic prices) – for direct-from-producer purchases
- Commodity-level factors (purchaser’s prices) – for retail transactions, including GST and margins
Our hybrid method combines Stats NZ data, the Eora global database and other national sources to provide a realistic picture of average emissions per dollar.
What’s new
- More accurate commodity mapping using a Commodity-by-Industry approach
- Improved import treatment to avoid double-counting and reflect global supply chains
- Updated reporting method using GWP100 from the IPCC’s Fifth Assessment Report (AR5)
These factors are ideal for estimating emissions from purchased goods and services, financed emissions and organisational procurement impacts. We also offer a spreadsheet tool to help users adjust for GST and inflation.
What’s included in the free and commercial licence?
The free licence gives you access to industry and commodity emissions factors for 2018 and 2021. It’s great for internal use, with peer-reviewed data.
The commercial licence includes everything in the free version, plus additional years (2022 and 2023), audited data (for 2023), customer support and the ability to integrate with software tools. It’s designed for organisations that need reliable, up-to-date data for commercial projects or digital platforms.
See the table below for a full comparison:
Free licence vs commercial licence
Free licence |
Commercial licence |
|
| Years covered | 2018, 2021 | 2018, 2021-2023 |
| EFs for industries |  |
|
| EFs for commodities | |
|
| Peer reviewed | from 2023 year |
from 2023 year |
| Audited |  |
from 2023 year |
| Use in commercial projects? | |
|
| Integration into software tools? | |
|
| Customer support | |
|
| Annual updates | |
|
| Adjust for inflation, GST | |
|
| Adjust for GWP method | |
|
| Split by scope, GHG | |
|