New Zealand's Greenhouse Gas Inventory is the official annual estimate of all human-generated greenhouse gas emissions and removals that have occurred in New Zealand since 1990.

Key findings:

1. New Zealand’s gross greenhouse gas emissions in 2018 were 78.9 million tonnes of carbon dioxide equivalent (Mt CO2-e). Compared to 1990, this is a 24 per cent increase in emissions.
2. Between 2017 and 2018, gross emissions decreased by 1 per cent. This was mainly due to a decline in emissions from manufacturing and construction, and public electricity and heat production.
3. Between 2017 and 2018, net emissions decreased by 3 per cent due to a reduced rate of deforestation and an increase in the production of harvested wood products.
4. The agriculture and energy sectors were the two largest contributors to New Zealand’s gross emissions, at 48 per cent and 41 per cent respectively.