Hamilton's emissions

We have measured our city-wide emissions for 2018/2019 and 2021/22, which you can see below. These are the emissions of our entire city, and everyone in our community. It includes the emissions from the way we get around, the waste we produce from our homes and businesses, and the energy we use.

One of the biggest challenges we face in Hamilton is how fast we’re growing. More people in our city has led to our emissions increasing by 6% from 2018/19 to 2021/22, so we’re tasked with finding ways to reduce our emissions, even while our population grows.

Updating our city-wide emissions profiles

We are currently reviewing how frequently we measure our emissions, so that we can better understand how we’re tracking against the emissions targets set in our climate change strategy, Our Climate Future: Te Pae Tawhiti o Kirikiriroa.

We are also reviewing the data we use to calculate our emissions. For the 2018/19 and 2021/22 profiles we have used mostly national and regional data that is then scaled down to the Hamilton population. However, as emissions measurements have matured and data availability has changed, we are finding ways to improve our calculations.

Due to challenges with data used to calculate agriculture and forestry emissions for 2021/22, we have continued to use the amounts calculated for 2018/19 profile. Therefore, we have assumed that emissions from these sources have remained the same over time. This will be reviewed as we continue to measure the profile going forward.

Council emissions

These emissions are created from the day-to-day running of Council. It’s not just keeping the lights on in our office – it includes the emissions from waste at Council facilities, our water treatment plants, and your favourite facilities like Hamilton Zoo and Waterworld.

Our 2020/21 and 2021/22 emissions profiles reflect the impacts of COVID-19 on our way of working and the associated emissions.

Another source of emissions comes from the treatment of our wastewater. These are called biogenic emissions, which means emissions from biological (plant and animal) sources, and in 2018/19 these contributed an additional 11,159tCO2e to our operational emissions.

Share this page


Has this page been helpful?
Thanks for your feedback.

Last updated 31 October 2023