Mercury's activities are deeply connected to nature and the climate, and we recognise the responsibility that comes with this. We are committed to playing our part in the transition to a low-carbon future. On this page you’ll find our climate-related disclosures, which offer insight into the climate risks and opportunities we are managing (Climate Statement), our carbon emissions footprint (GHG Emissions Inventory), the actions we are taking to reduce emissions (Climate Action Plan).
We love New Zealand and take climate change measures seriously. Our Climate Action Plan outlines in detail the actions we plan to take as we aim to play our part in reducing greenhouse gas emissions and help limit global warming to no more than 1.5°C.
It builds on work we’ve done to reduce emissions and sets out near- and long-term targets we aim to achieve as we work towards a net-zero future while continuing to deliver reliable energy for New Zealand.
Impacts from climate change, actions to reduce emissions and the transition to a low-carbon economy are shaping the world around us. Our strategy anticipates that our business will encounter both climate-related opportunities and risks as we pursue our objective of playing a leading role in New Zealand's successful transition to a low-carbon future.
Our Climate Statement is prepared in accordance with the Aotearoa New Zealand Climate Standards and provides a detailed look into how we consider and respond to climate-related risks and opportunities.
We actively measure and monitor our carbon emissions. Our geothermal operations generate greenhouse gas emissions and we are seeking to reduce these emissions each year. Our hydro and wind generation activities are largely emissions free.
Since Mercury exited thermal generation in 2015, our absolute generation-related GHG emissions have decreased by around 60% (as at 30 June 2025). Over the past year we have also completed a materiality assessment across our Scope 3 inventory to better understand the emissions associated with our wider value chain. You can find further detail on these impacts in our latest GHG Emissions Inventory.
MANAGING NATURAL RESOURCES
There are a number of programmes and surveys that we undertake (or participate in) to ensure we're caring for natural resources. Here are some great examples.
ENVIRONMENTAL INSPECTIONS
GEOMORPHOLOGY SURVEYS