We know that our transmission network impacts the environment; so we work hard to manage these impacts and proactively protect, enhance and respect the environment.

We're committed to providing and maintaining a National Grid that helps meet the Government's energy strategy target of having 90 percent of New Zealand’s electricity generated by renewable sources by 2025. To do this we’re investigating what more we can do to facilitate the connection of renewable generation to our grid and reducing our own carbon footprint.

We're also working with communities to manage our environmental impacts. Our CommunityCare Fund Programme is frequently the funder for community-led environmental projects.

Carbon footprint

Our commitment to carbon management takes two forms:

  • measuring our carbon footprint on an annual basis
  • implementing new initiatives to reduce our emissions and our environmental impact generally, on an ongoing basis.

Carbon footprint reports have been completed annually since 2006-2007 (benchmarked against the 2005/06 financial year emissions).

Like others in the industry, our main emissions continue to be from stocks of sulphur hexafluoride (SF6), used for electrical insulation and other purposes in substations (49% of our footprint in 2013/14). The next largest group of emissions is from electricity used in office buildings and substations (31%), air and vehicle travel.

Implementing new initiatives

Our ongoing carbon management programme implements initiatives focused on:

  • reducing our SF6 emissions
  • reducing emissions in other key areas where progress can be made.

We are focused on adapting our work behaviours to improve our environmental performance. This work is ongoing and our approach evolves as we learn more about our emissions profile and explore different carbon management options.

Our plan to reduce emissions

We have focused on managing our emissions of sulphur hexafluoride.

In 2013/14 we again achieved our lowest sulphur hexafluoride releases, relative to our total sulphur hexafluoride holdings, 0.5%. Because of the significance of lost sulphur hexafluoride (from a global warming perspective), we continue to look for ways to improve our sulphur hexafluoride handling and management. These emissions were 7.8% lower in 2013/14 than in the previous year.