Climate change

Our city continues to face the effects and impacts of climate change. We are in the early stages of developing a strategy, Rautaki o Te Ao Hurihuri, and will look to our community for input and direction in the coming months


Porirua City Council declared a climate change emergency on 26 June, 2019, setting the scene for Council to take a greater emphasis on this issue. 

A strategy, Rautaki o Te Ao Hurihuri, will be developed in the coming weeks and months, with community engagement a vital part of the process - building on the good work already being done on the city's Growth Strategy and the District Plan.

See our press release from 27 June, 2019, on Te Ao Hurihuri here.

For more information, or to get involved, email

Porirua's 2050 emissions calculator 

What choices will see the biggest reduction in the Wellington region’s emissions? What do we need to do in order to meet emissions targets? The Wellington Region 2050 Emissions Calculator lets you model changes within the Greater Wellington Region in order to forecast our future emissions.

This tool puts you in charge of the Wellington Region by allowing you to adjust key levers relating to energy supply and demand, transport, land use and agriculture, and more. By adjusting these levers you can see what will offer the biggest emissions reductions for the Greater Wellington region and the individual council areas.

Check it out here and let us know what you think.

District Plan and coastal hazards

Porirua City Council is undertaking a full review of the District Plan. The District Plan tells us what we can and can’t do with our land. It makes rules about where we can subdivide, what activities we can do and where we can do them. 

As part of this review, the Government requires us to address a lot of things to keep our communities safe and to protect the local environment. We have engaged the Focus Resource Management Group to help us to understand the coastal hazard risk in Porirua. 

For more information see our coastal hazards webpage.

Greenhouse Gas Inventory

Wellington Region

The Council are working together with Greater Wellington Regional Council and other councils across the region to complete a community carbon inventory through AECOM to assist with discussion and decision-making as part of our strategy on climate change. 

The inventory will cover the seven gases outlined in the GPC methodology including CO2, CH4, N2O, HFCs, PFCs, SF6 and NF31. It will apply the following guiding principles in the completion of the community carbon footprint:

• Measurability
• Accuracy: quality assurance and quality control procedures will be applied.
• Relevance: the inventory will reflect the Greenhouse Gas (GHG) emissions within Wellington Region and serve the decision-making needs of users.
• Completeness: all significant GHG emission sources will either be included in the community inventory or any specific exclusion will be justified and clearly disclosed.
• Consistency: the GPC accounting methodology will be applied across all emission sources.
• Transparency: all data, sources, emissions factors, methods, and assumptions will be clearly presented and documented.

We expect a draft high-level report to be available before Christmas, with the final summary and detailed report available towards the end of January 2020. 

This report was released in 2015 by AECOM for Greater Wellington Regional Council. Some key findings for the region, and for Porirua City specifically include:

  • The region's emissions per capita were measured at 4.18 tonnes 
  • The rate of emissions has fluctuated since 2001, with a consistent downward trend between 2006 to 2010 then peaking at 4.36 tonnes per capita in 2011
  • The period 2013-2015 has been a time of relatively stable emission rates.
  • Most emissions come from stationary energy and transport, compared to the Wairarapa where most come from agriculture.
The main factors in reducing greenhouse gas emissions in the Wellington region at this time were:

  • more electricity being generated from renewable sources (wind and geothermal),
  • a decline in electricity consumption
  • relatively stable overall consumption of road transport fuels (petrol use has declined while diesel has gone up)
  • landfill gas recovery systems being installed
  • more waste being diverted from landfills.

Check out the full report Community Greenhouse Gas Inventory for Wellington City and the Greater Wellington Region 2000-2015 (1.8 MB pdf, 55 pages).

Wellington Region Greenhouse Gas Inventory 2012

This inventory is an annual accounting of greenhouse gas emissions for the Wellington region as a whole, with a breakdown by district for the financial years 2000/01 to 2012/13. The districts include Wellington City, Porirua City, Kāpiti Coast District, Hutt City and Upper Hutt City, as well as aggregate results for South Wairarapa, Carterton and Masterton districts. 

Emissions and removals are included for:  

  • stationary energy
  • transport
  • industrial processes
  • forestry
  • agriculture
  • waste.  

Check out the Wellington Region Greenhouse Gas Inventory (4.8MB pdf, 152 pages).

Released in April 2019, there is a report on New Zealand's collective greenhouse gas emissions between 1990 - 2017. For more information, and summary and detailed reports on the findings visit the Ministry for the Environment website.