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.
- 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.
- 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.
- 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.
- 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.