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An Investigation in the Carbon Emissions of Members of Parliament (MPs) in NZ 

By Alice Taylor, Peter Mangin and Richard Conway

The Top 10 MPs with the Highest Estimated C02 Emissions for 2024 so far:   

Top 10 MPs by Estimated carbon Emissions (2024)

“We believe corporations should report their carbon emissions and take active, calculated steps to reduce them. Members of Parliament—the rule makers—should lead by example. We all have a responsibility to reduce emissions wherever we can; it’s the most effective form of climate action. For those unavoidable emissions, our role is to ensure carbon offsetting remains a trusted and meaningful option in the toolbox. Transparency and accountability are essential for building a sustainable future.” – Dave Rouse, CEO of  Carbon Click

MP Emissions Comparison Tool

Estimated MP Emissions Comparison

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Note: MP emissions are based on air travel expenses for the reported period.

Party averages are calculated from the available MP data and may not represent the entire party.

The New Zealand average is an estimate of 1 tonne CO2 for annual flight emissions per capita.

This study was sparked by an interest in examining New Zealand’s carbon emissions, focusing on specific corporations and groups within the country. It reflects a global trend of heightened environmental awareness as individuals and organisations increasingly scrutinise their carbon footprints. Yet, during our research, we discovered that while many government sectors face intense scrutiny for their environmental impact, the carbon emissions of New Zealand’s Members of Parliament (MPs) and political parties remain conspicuously unexamined. This reality was the inspiration behind the study.  

To address this issue, we estimate the carbon emissions generated from MPs’ air travel, a significant contributor to New Zealand’s overall emissions. We analysed the environmental impact of parliamentary travel practices using publicly available data on air travel expenses. 

This analysis is inspired by a broader societal discourse on carbon accountability, often focused on celebrities and corporations yet rarely applied to political leadership. By examining this overlooked aspect of New Zealand’s emissions, we aim to spark meaningful debate about the environmental responsibility of those legislating climate policy. We also want to showcase the value of AI-driven search utilising publicly available data to home in on changes we need to make. 

What do we know about Parliament and their Carbon Emissions? 

Based on the available information, there is no specific mention of NZ MPs individually monitoring, tracking, or reporting their carbon emission. Some political parties, including the Greens, have stated that they offset their carbon emissions for air travel. This exact information, however, is not publicly disclosed. However, there are several relevant initiatives and practices related to emissions monitoring and reporting at various levels of government in New Zealand:  

Parliamentary Collaboration on Climate Change 

A group of 35 MPs from across party lines has collaborated on climate change issues through GLOBE New Zealand, a cross-party working group[1]. This group commissioned a report on long-term low-emission pathways for New Zealand, demonstrating a commitment to addressing climate change at the parliamentary level.  

Government-wide Emissions Reporting 

The New Zealand government has established mechanisms for monitoring and reporting emissions at a national level:  

  • The Climate Change Commission, an independent body, monitors New Zealand’s progress in reducing greenhouse gas emissions[2].  
  • The Commission produces annual monitoring reports on emissions reductions, assessing the country’s progress towards meeting emissions budgets and the 2050 target[2].  
  • The government is required to prepare and publish plans outlining policies and strategies for achieving emissions budgets[6].  

Public Sector Emissions Reporting 

While not specifically focused on MPs, some government offices have begun reporting their emissions:  

  • The Office of the Parliamentary Commissioner for the Environment (PCE) voluntarily reports its emissions annually despite not being mandated under the Carbon Neutral Government Programme[4].  
  • The PCE’s office has had its emissions independently verified and achieved Toitū carbonreduce certification[4].  

Legislative Framework 

New Zealand has implemented legislation to address climate change and emissions reduction:  

  • The Climate Change Response (Zero Carbon) Amendment Act 2019 established the framework for emissions budgets and the Climate Change Commission[3].  
  • The Climate Change Response (Emissions Trading Reform) Amendment Act 2020 introduced changes to the New Zealand Emissions Trading Scheme (NZ ETS), including a cap on emissions[3].  

While there is no explicit mention of individual MPs tracking their carbon emissions, the broader governmental and parliamentary focus on emissions reduction suggests a growing awareness and commitment to addressing climate change at various levels of New Zealand’s political system.  

Citations


[1] https://www.parliament.nz/mi/get-involved/features/mps-collaborate-across-party-lines-in-response-to-climate-change/  
[2] https://www.climatecommission.govt.nz/our-work/monitoring/emissions-reduction-monitoring/erm-2024/erm-2024-summary/  
[3] https://www.parliament.nz/mi/pb/library-research-papers/research-papers/library-research-brief-new-zealand-s-response-to-addressing-climate-change/  
[4] https://pce.parliament.nz/about-us/emissions-reporting/  
[5] https://www.scoop.co.nz/stories/PA2407/S00082/members-bill-lodged-to-stop-local-emissions-red-tape.htm  
[6] https://environment.govt.nz/assets/Publications/Files/climate-change-response-zero-carbon-amendment-bill-summary.pdf  
[7] https://oag.parliament.nz/2024/local-govt/part-3  
[8] https://environment.govt.nz/assets/publications/climate-change/Carbon-Neutral-Government-Programme-A-guide-to-managing-your-greenhouse-gas-emissions.pdf  
[9] https://www.rnz.co.nz/news/national/512283/real-time-carbon-map-inspires-students-to-change-transport-behaviour  
[10] https://www.climatecommission.govt.nz  
[11] https://www.treasury.govt.nz/sites/default/files/2022-04/2022-year-end-reporting-departments.pdf  
[12] https://environment.govt.nz/what-government-is-doing/areas-of-work/climate-change/emissions-reductions/emissions-reduction-targets/greenhouse-gas-emissions-targets-and-reporting/  

What did we use to calculate estimated carbon emissions? 

MP expenses are publicly reportable and maintained here: https://www.parliament.nz/en/mps-and-electorates/mps-expenses/. Air travel is a specific cost centre.  
  
Air travel expenses for MPs and their family members are subject to reimbursement as per the Members of Parliament (Remuneration and Services) Act 2013. The entitlements, such as air travel for MPs, their family members, and travel entitlements for former members, are determined by the Remuneration Authority and the Speaker’s directions for supporting MPs’ parliamentary functions.  

Circumstances under which air travel expenses might not be reimbursed include:  

  1. If travel is undertaken for private business purposes.  
  1. For former members, if they were elected after the 1999 general election, they do not have entitlements to former member travel rebates unless covered under other specific provisions.  
  1. The entitlements may also be subject to limitations and conditions, such as those that apply specifically to domestic or international travel and rebate calculations.  

While the New Zealand Parliament records MPs travel expenses, ministerial travel expenses are recorded by the Department of Internal Affairs (DIA). Getting accurate data is challenging because of its multiple placements on government sites. While domestic air travel expenses are detailed and somewhat accessible, enabling public scrutiny, international travel expenses are often grouped under broad categories such as “overseas travel.” If there are reports of international air travel – they are not easy to find. This lack of granularity makes it difficult to discern specific costs and details of international trips, hindering transparency and accountability. 

Furthermore, there is no comprehensive public record of the carbon emissions associated with ministerial air travel. Although initiatives such as the Carbon Neutral Government Programme require participating organisations to measure, report, and reduce emissions, specific data on emissions from ministerial travel is not readily available. 

https://www.dia.govt.nz/Ministers-expense-releases

General Principles Governing Travel Services, as Outlined in The Members of Parliament (Remuneration and Services) Act 2013:  

These principles aim to ensure that MPs’ travel services are appropriately tailored to their roles and responsibilities, funded responsibly, and administered transparently to maintain public confidence and accountability in supporting parliamentary functions.  

1.        Public Understanding and Transparency:  

Travel entitlements are structured to promote public understanding of MPs’ roles and work, including the travel services necessary to perform their functions. There is an emphasis on maintaining transparency, ensuring that how public funds are used for MPs’ travel is clear to taxpayers.  

2.        Efficient and Effective Service Delivery:  

The entitlements to travel services should facilitate efficient and effective support for MPs to carry out their parliamentary responsibilities. This means the mechanisms and systems for providing travel services must minimise waste and be administratively straightforward.  

3.        Fairness to Taxpayers:  

The principle of fairness to taxpayers underscores that travel entitlements should not be extravagant or wasteful but reflect the prudent use of public money. The provisions must balance the need to support MPs’ functions without imposing an undue burden on taxpayers.  

4.        Consideration of Special Needs:  

Where applicable, entitlements should consider special requirements, such as for MPs with physical or sensory impairments, ensuring inclusivity and equitable support across all MPs.  

5.        Taxation Consequences:  

Suppose a travel entitlement provides a personal benefit or has the potential to do so for MPs, Ministers, or their family members. In that case, it must be reviewed in consultation with tax authorities to assess its value and the potential tax implications. This ensures that any element of private benefit does not unduly or unfairly benefit MPs compared to other taxpayers.  

6.        Consistency, Clarity, and Simplicity:  

The rules and provisions around travel entitlements should be clear and consistently applied, making it easy to determine eligibility and avoiding ambiguity. The entitlements should be simple to administer and enforce.  

Recorded Travel Expenses for Members of Parliament, 2023
Party  Member  Air ($) 
Te Pāti Māori  Waititi Rawiri  59847 
Te Pāti Māori  Ngarewa-Packer Debbie  25922 
Te Pāti Māori  Ferris Takuta  10014 
Te Pāti Māori  Maipi-Clarke Hana-Rawhiti  5321 
Te Pāti Māori  Kemp Takutai  2945 
Te Pāti Māori  Kapa-Kingi Mariameno  2042 
Nz First  Jones Shane  12214 
Nz First  Marcroft Jenny  6365 
Nz First  Unkovich Tanya  6111 
Nz First  Peters Winston  5556 
Nz First  Arbuckle Jamie  5523 
Nz First  Costello Casey  5381 
Nz First  Patterson Mark  4783 
Nz First  Foster Andy  43 
National  Doocey Matt  51650 
National  Willis Nicola  48290 
National  Mooney Joseph  47730 
National  Reti Shane  47578 
National  Potaka Tama  45649 
National  Bishop Chris  43955 
National  Smith Stuart  43900 
National  McClay Todd  43478 
National  Woodhouse Michael  41177 
National  Muller Todd  41023 
National  Upston Louise  37192 
National  Brownlee Gerry  34676 
National  Simmonds Penny  33687 
National  Watts Simon  32923 
National  O'Connor Simon  31881 
National  Bayly Andrew  30996 
National  Brown Simeon  30804 
National  Collins Judith  29140 
National  Stanford Erica  28481 
National  Goldsmith Paul  27111 
National  Kuriger Barbara  24808 
National  Uffindell Sam  22510 
National  Grigg Nicola  21933 
National  Penk Chris  21793 
National  Lee Melissa  20600 
National  Mitchell Mark  19110 
National  van de Molen Tim  18064 
National  Simpson Scott  16910 
National  Pugh Maureen  16751 
National  Dean Jacqui  16462 
National  McKelvie Ian  15872 
National  Hipango Harete  14694 
National  Bennett David  12357 
National  Wedd Catherine  8065 
National  Rutherford Tom  6957 
National  Cheung Carlos  6295 
National  Brewer Cameron  5980 
National  Lu Nancy  5953 
National  Meager James  5743 
National  Campbell Hamish  5485 
National  Hamilton Ryan  5127 
National  Nakhle Rima  5105 
National  Garcia Paulo  4974 
National  Kirkpatrick Dana  4725 
National  McCallum Grant  4581 
National  Nimon Katie  4387 
National  Weenink Vanessa  4267 
National  Anderson Miles  4171 
National  Luxon Christopher  70956 
National  MacLeod David  3630 
National  Fleming Greg  3367 
National  Bidois Dan  3308 
National  Redmayne Suze  1835 
National  Butterick Mike  1770 
National  Costley Tim  742 
National  Bates Carl  663 
Labour  Prime Willow-Jean  49959 
Labour  Tirikatene Rino  44024 
Labour  Tinetti Jan  42143 
Labour  Parker David  42104 
Labour  Sepuloni Carmel  40223 
Labour  O'Connor Damien  39512 
Labour  Williams Arena  38772 
Labour  Leary Ingrid  38659 
Labour  Brooking Rachel  37283 
Labour  Woods Megan  36788 
Labour  Henare, Peeni  31677 
Labour  Eagle Paul  31152 
Labour  Allan Kiri  31146 
Labour  Andersen Ginny  30937 
Labour  Webb Duncan  30278 
Labour  Hipkins Chris  29945 
Labour  Jackson, Willie  29892 
Labour  Chen Naisi  29448 
Labour  Edmonds Barbara  29360 
Labour  Sio Aupito William  29166 
Labour  Bennett Glen  28440 
Labour  Boyack Rachel  28066 
Labour  Davis, Kelvin  27174 
Labour  Sosene Lemauga Lydia  27008 
Labour  Radhakrishnan Priyanca  26310 
Labour  Little, Andrew  25974 
Labour  Russell Deborah  25673 
Labour  Luxton, Jo  25658 
Labour  Clark David  25471 
Labour  Kanongata'a Anahila  24947 
Labour  Nash Stuart  24419 
Labour  Leavasa Anae Neru  24265 
Labour  Coffey Tamati  23914 
Labour  Strange Jamie  23576 
Labour  Roberts Angela  23081 
Labour  Utikere Tangi  23020 
Labour  Verrall Ayesha  22768 
Labour  Robertson, Grant  21615 
Labour  Twyford Phil  21288 
Labour  Warren-Clark Angie  20835 
Labour  Walters Vanushi  20719 
Labour  Halbert Shanan  19891 
Labour  Belich Camilla  19616 
Labour  White Helen  18759 
Labour  Henderson Emily  18495 
Labour  Omer Ibrahim  17538 
Labour  Salesa Jenny  17286 
Labour  Lorck Anna  16805 
Labour  Williams Poto  16256 
Labour  Wood Michael  15539 
Labour  Craig Liz  15372 
Labour  Peke-Mason Soraya  15195 
Labour  McLellan Tracey  14560 
Labour  McAnulty Kieran  14348 
Labour  Mahuta, Nanaia  14295 
Labour  Pallett Sarah  13732 
Labour  Lubeck Marja  13709 
Labour  Rosewarne Dan  12952 
Labour  Ngobi Terisa  12855 
Labour  Rurawhe Adrian  11136 
Labour  Tangaere-Manuel Cushla  8551 
Labour  Ardern Jacinda  5616 
Labour  O'Connor Greg  5515 
Labour  Davidson Reuben  4984 
Green  Kerekere Elizabeth  32133 
Green  Tuiono Teanau  39425 
Green  Davidson Marama  34223 
Green  Ghahraman Golriz  27490 
Green  Shaw James  26910 
Green  Sage Eugenie  23770 
Green  Swarbrick Chloe  21355 
Green  Menendez March Ricardo  21325 
Green  Lyndon Huhana  12148 
Green  Genter Julie Anne  11488 
Green  Logie Jan  9596 
Green  Abel Steve  7669 
Green  Tana Darleen  7494 
Green  Pham Lan  7044 
Green  Carter Kahurangi  6591 
Green  Willis Scott  5758 
Green  Paul Tamatha  1480 
ACT  Court Simon  36665 
ACT  Seymour David  34972 
ACT  Chhour Karen  28877 
ACT  McKee Nicole  23394 
ACT  Baillie Chris  22796 
ACT  van Velden Brooke  21234 
ACT  Cameron Mark  20506 
ACT  Severin Toni  18860 
ACT  Smith Damien  15237 
ACT  McDowall James  10674 
ACT  Stephenson Todd  10181 
ACT  Luxton Cameron  8979 
ACT  Trask Laura  5579 
ACT  Parmar Parmjeet  5199 
ACT  Hoggard Andrew  2237
Recorded Travel Expenses for Members of Parliament, 1 January – 30 June 2024 
Party Member Air Expenses ($) Q1 Q2 2024
Te Pāti Māori Ngarewa-Packer, Debbie 42,470
Labour Jackson, Willie 34,622
Te Pāti Māori Waititi, Rawiri 30,610
Green Lyndon, Huhana 30,149
National Goldsmith, Paul 27,366
National Doocey, Matt 27,012
Labour Williams, Arena 26,558
National Reti, Shane 26,503
NZ First Jones, Shane 25,336
Labour Edmonds, Barbara 23,826
National Luxon, Christopher 23,333
Green Carter, Kahurangi 23,031
National McClay, Todd 22,918
National Lu, Nancy 22,148
NZ First Patterson, Mark 21,422
National Rutherford, Tom 21,126
National Upston, Louise 20,747
National Potaka, Tama 20,726
Labour Parker, David 20,593
Labour Boyack, Rachel 19,993
Green Pham, Lan 19,953
Labour Prime, Willow-Jean 19,743
National Simmonds, Penny 19,499
National Watts, Simon 19,469
Labour McAnulty, Kieran 18,981
National Mitchell, Mark 18,854
Labour O'Connor, Damien 18,776
Te Pāti Māori Ferris, Takuta 18,591
Te Pāti Māori Maipi-Clarke, Hana-Rawhiti 18,491
Labour Tinetti, Jan 18,164
Labour Sepuloni, Carmel 18,077
ACT Seymour, David 18,048
National Stanford, Erica 18,001
ACT Trask, Laura 17,852
Labour Leary, Ingrid 17,630
National Mooney, Joseph 17,601
National Wedd, Catherine 17,029
ACT Court, Simon 17,022
National Penk, Chris 17,004
National Meager, James 16,920
NZ First Costello, Casey 16,896
Green Willis, Scott 16,789
ACT Luxton, Cameron 16,654
NZ First Arbuckle, Jamie 16,635
National van de Molen, Tim 16,195
Labour Radhakrishnan, Priyanca 16,021
Labour Hipkins, Chris 15,930
National Brewer, Cameron 15,912
Labour Halbert, Shanan 15,848
Labour Andersen, Ginny 15,699
Te Pāti Māori Kapa-Kingi, Mariameno 15,590
National Uffindell, Sam 15,107
National Brownlee, Gerry 14,958
ACT Stephenson, Todd 14,806
Green Abel, Steve 14,626
National Lee, Melissa 13,989
Labour Sosene, Lemauga Lydia 13,831
National Costley, Tim 13,792
Labour Twyford, Phil 13,776
National Pugh, Maureen 13,761
National Bayly, Andrew 13,664
National Smith, Stuart 13,428
Labour Russell, Deborah 13,261
National Bishop, Chris 13,125
National MacLeod, David 13,097
Green Davidson, Marama 13,000
ACT Hoggard, Andrew 12,904
Labour Luxton, Jo 12,808
National Campbell, Hamish 12,752
National Willis, Nicola 12,673
Green Swarbrick, Chloe 12,645
National Fleming, Greg 12,361
National Cheung, Carlos 12,339
Labour Belich, Camilla 12,323
NZ First Marcroft, Jenny 12,231
National Redmayne, Suze 12,051
Labour Davidson, Reuben 12,040
National Bidois, Dan 12,012
Labour Utikere, Tangi 12,005
National Kirkpatrick, Dana 12,004
National Collins, Judith 11,994
National Hamilton, Ryan 11,985
National Nakhle, Rima 11,824
Green Tuiono,Teanau 11,706
Labour Tangaere-Manuel, Cushla 11,579
ACT van Velden, Brooke 11,528
ACT McKee, Nicole 11,392
Labour Bennett, Glen 11,317
NZ First Unkovich, Tanya 11,238
National Brown, Simeon 11,143
ACT Parmar, Parmjeet 10,929
Labour Webb, Duncan 10,923
Labour Brooking, Rachel 10,587
Green Menéndez March, Ricardo 10,573
National Anderson, Miles 10,510
National McCallum, Grant 10,248
National Simpson, Scott 10,201
Te Pāti Māori Kemp, Takutai 10,183
Labour Woods, Megan 10,120
Green Genter, Julie Anne 10,100
National Garcia, Paulo 9,947
National Nimon, Katie 9,799
Labour McLellan, Tracey 9,785
Green Paul, Tamatha 9,718
National Weenink, Vanessa 9,686
Labour White, Helen 9,490
ACT Chhour, Karen 9,407
NZ First Peters, Winston 9,160
Labour Henare, Peeni 8,745
Labour Verrall, Ayesha 8,280
Green Xu-Nan, Lawrence 8,205
Green Shaw, James 7,751
ACT Cameron, Mark 7,721
Green Tana, Darleen 7,630
NZ First Foster, Andy 7,630
National Kuriger, Barbara 7,336
National Grigg, Nicola 6,617
Labour Salesa, Jenny 6,373
Labour O'Connor, Greg 5,698
Green Wade-Brown, Celia 4,898
National Butterick, Mike 4,862
Labour Rurawhe, Adrian 4,706
National Bates, Carl 3,685
Labour Robertson, Grant 3,116
Labour Davis, Kelvin 1,997
Green Ghahraman, Golriz 889
Labour Tirikatene, Rino 323

Methodology: How we used available data to estimate carbon emissions 

Based on airline search results, we deduced some insights into air travel costs, distances, and carbon emissions for New Zealand in 2024:  

We focused on international flight routes because they provided a wealth of verified data, including details on different aircraft types and information from multiple reliable sources. While these figures are likely conservative compared to domestic flights, there is very limited data available on local New Zealand routes. However, we did find a few estimates for the Auckland-Wellington route, suggesting emissions of around 150kgs per trip. This aligns with our calculations and validates our approach. As we’ve consistently noted, if anything, our estimates are on the conservative side. 

Average Costs  

Air New Zealand announced a major sale for 2024 with some indicative prices:  

  • Auckland to Sydney: $197 one way  
  • Auckland to Melbourne: $209 one way  
  • Auckland to Honolulu: $547 one way  
  • Auckland to Los Angeles: $697 one way[1]  

Over the last 12 months, the average cost of a return ticket from Auckland to Los Angeles has been between $1200 and $2000[1].  

For flights to New Zealand from the USA, the cheapest return flight found was $419[2].  

Average Miles Flown  

While the search results don’t provide specific data on average miles flown by individuals in New Zealand for 2024, we can infer some information based on popular routes:  

  • Auckland to Sydney: approximately 1,340 miles  
  • Auckland to Los Angeles: approximately 6,510 miles  

Carbon Emissions Per Person  

New Zealand ranks 6th in the world for per-capita aviation emissions, at 1 tonne of CO2 per person, which is about 10 times the world average[3].  

For specific routes, carbon emissions can vary significantly based on factors such as:  

  • Class of travel: Business class emissions are about three times higher than economy class for long-haul flights[5].  
  • Aircraft type: Newer “next generation” aircraft are more fuel-efficient[5].  
  • Direct vs. multi-leg trips: Direct flights generally have lower emissions[5].  

Some examples of carbon emissions for specific routes:  

Note: these routes were selected as there was solid data around price AND CO2, though will be more conservative than local hop flights. 

1. Wellington/Auckland/Singapore/Auckland/Wellington:  

   – Economy: 1.93 tonnes CO2  

   – Business: 5.61 tonnes CO2[5]  

2. Auckland/Dubai/Paris/Dubai/Auckland:  

   – Economy: 3.89 tonnes CO2  

   – Business: 11.31 tonnes CO2[5]  

3. Auckland/Sydney/Auckland (economy class):  

   – Boeing 787-9: 0.33 tonnes CO2  

   – Airbus A320: 0.39 tonnes CO2  

   – Boeing 777-300ER: 0.44 tonnes CO2[5]  

It’s important to note that these figures are averages and can vary based on individual travel patterns and choices. Additionally, the aviation industry and the New Zealand government are working on initiatives to reduce carbon emissions from air travel in the coming years[3][5].  

Citations

[1] https://www.nzherald.co.nz/travel/air-new-zealand-flight-sale-announced-for-2024/VIABFCEBZJBATCS5FJWKHOOQZY/  

[2] https://www.flightsfinder.com/flights-new-zealand  

[3] https://www.wgtn.ac.nz/igps/publications/working-papers/Aviation_Review-McLachlan_and_Callister-WP_22-01.pdf  

[4] https://www.cheapflights.co.nz/flights-to-New-Zealand/  

[5] https://www.procurement.govt.nz/contracts/air-travel-services/air-travel-services-broader-outcomes/  

[6] https://www.tandfonline.com/doi/full/10.1080/03036758.2023.2212174  

[7] https://environment.govt.nz/assets/publications/Measuring-emissions_Detailed-guide_2024_ME1829.pdf  

[8] https://www.flyertalk.com/forum/united-airlines-mileageplus/2146839-strategy-us-new-zealand.html  

Calculation methodology  

Step-by-Step Calculation  

  1. Understanding the Data Provided:  
  1. Flight Costs and Distances: We have several example routes with costs and distances.  
  1. Carbon Emissions: We have carbon emissions for specific routes and aircraft types, and an average per-capita aviation emission of 1 tonne of CO2 for New Zealanders.  
  • Objective:  
  • Calculate the average carbon emissions per $100 spent on air travel.  
  1. Key Routes and Their Costs and Emissions:  
  • Auckland to Sydney:  
  1. Cost: $197 one-way  
  • CO2 emissions (Boeing 787-9): 0.33 tonnes CO2 round-trip  
  • Auckland to Los Angeles:  
  • Cost: $697 one-way  
  • We don’t have direct CO2 data, but let’s estimate using proportional data or average emission data for long-haul flights.  
  • CO2 Emissions per Dollar Spent Calculation:  
  • For each route, calculate the CO2 emissions per dollar spent by dividing the total CO2 emissions by the cost of the flight.  
  1. Calculations:  

Auckland to Sydney:  

  • Round-trip Cost: $197 one-way, so round-trip cost = $197 * 2 = $394.  
  1. Round-trip CO2 Emissions: 0.33 tonnes.  
  • CO2 per Dollar: 0.33 tonnes394 dollars≈0.000838 tonnes CO2 per dollar\frac{0.33 \text{ tonnes}}{394 \text{ dollars}} \approx 0.000838 \text{ tonnes CO2 per dollar}394 dollars0.33 tonnes​≈0.000838 tonnes CO2 per dollar.  

Auckland to Los Angeles:  

  • Round-trip Cost: $697 one-way, so round-trip cost = $697 * 2 = $1394.  
  • Estimated Round-trip CO2 Emissions: Let’s use an average long-haul flight emission (such as 2.0 tonnes CO2 based on similar distances and aircraft types).  
  • CO2 per Dollar: 2.0 tonnes1394 dollars≈0.001435 tonnes CO2 per dollar\frac{2.0 \text{ tonnes}}{1394 \text{ dollars}} \approx 0.001435 \text{ tonnes CO2 per dollar}1394 dollars2.0 tonnes​≈0.001435 tonnes CO2 per dollar.  
  • Average CO2 Emissions per Dollar Spent:  

Now we average the CO2 per dollar for these two routes:  

Average CO2 per dollar=0.000838+0.0014352≈0.001137 tonnes CO2 per dollar\text{Average CO2 per dollar} = \frac{0.000838 + 0.001435}{2} \approx 0.001137 \text{ tonnes CO2 per dollar}Average CO2 per dollar=20.000838+0.001435​≈0.001137 tonnes CO2 per dollar  

  • CO2 Emissions per $100 Spent:  

To find the CO2 emissions per $100 spent:  

\text{CO2 per $100} = 0.001137 \times 100 = 0.1137 \text{ tonnes CO2 per $100}  

On average, for every $100 spent on air travel, approximately 0.1137 tonnes (or 113.7 kg) of CO2 are produced per person.  

This value reflects an estimate based on typical routes and provided data, and the actual emissions may vary depending on specific circumstances, such as the type of aircraft, route taken, and class of service.  

Note: this will not account for high-cost routes or carbon offset paid expenses and is extremely conservative in approach anyway.  

What carbon emissions did we estimate? 

It’s no shock that politicians’ emissions surpass those of the average New Zealander—extensive travel comes with the job. But our investigation revealed something far more troubling: staggering disparities, glaring omissions, and travel expenditures that challenge justification. 

Top 10 MPs by Air Travel Costs and Estimated Carbon Emissions, 2023 

Christopher Luxon (National): 

Air Expenses: $70,956 

CO2 Emissions: 97.21 tonnes 

Rawiri Waititi (Te Pāti Māori) 

Air Expenses: $59847 

CO2 Emissions: 81.99 tonnes 

Matt Doocey (National): 

Air Expenses: $51,650 

CO2 Emissions: 70.76 tonnes 

Willow-Jean Prime (Labour): 

Air Expenses: $49,959 

CO2 Emissions: 68.44 tonnes 

Nicola Willis (National): 

Air Expenses: $48,290 

CO2 Emissions: 66.16 tonnes 

Joseph Mooney (National): 

Air Expenses: $47,730 

CO2 Emissions: 65.39 tonnes 

 Shane Reti (National): 

Air Expenses: $47,578 

CO2 Emissions: 65.18 tonnes 

8 Tama Potaka (National):

Air Expenses: $45,649

CO2 Emissions: 62.54 tonnes

9 Rino Tirikatene (Labour):

Air Expenses: $44,024

CO2 Emissions: 60.31 tonnes

10 Chris Bishop (National):

Air Expenses: $43,955

CO2 Emissions: 60.22 tonnes 

An analysis of the estimated carbon emissions of MP’s in 2023:

1. Labour Party: 

Total Air Expenses: $1,549,694 

CO2 Emissions: 2,123.08 tonnes 

Labour’s air travel expenses and emissions are the highest among all parties, accounting for more than 50% of the total figures. This reflects their large member base and potentially higher travel needs. With that said, with its influence on policy and public behaviour, the party has an opportunity to lead by example by reporting on emissions.  

2. National Party: 

Total Air Expenses: $1,114,393 

CO2 Emissions: 1,526.72 tonnes 

Although their expenses and emissions are second to Labour, National MPs like Christopher Luxon stand out with a personal CO2 footprint of 97.21 tonnes, the highest among all MPs. 

3. Green Party: 

Total Air Expenses: $272,446 

CO2 Emissions: 373.25 tonnes 

The Green Party’s emissions, while lower than larger parties, remain significant and challenge their environmental stance. Individual MPs, like Marama Davidson, emitted 46.89 tonnes of CO2, highlighting room for improvement. This raises questions about whether travel arrangements align with the party’s sustainability principles.  

4. ACT Party: 

Total Air Expenses: $265,390 

CO2 Emissions: 363.58 tonnes 

ACT’s figures are similar to the Greens but stand out for MPs like Simon Court, who emitted 50.23 tonnes. This highlights significant emissions despite being a smaller party. 

5. Te Pāti Māori: 

Total Air Expenses: $106,091 

CO2 Emissions: 145.34 tonnes 

As a smaller party, their expenses and emissions are relatively low. In saying this, Rawiri Waititi stands out with emissions of 81.99 tonnes, showing significant individual impact compared to the party’s total. 

6. New Zealand First: 

Total Air Expenses: $45,976 

CO2 Emissions: 62.99 tonnes 

With the lowest figures among represented parties, NZ First demonstrates the smallest environmental and financial footprint, reflecting their modest member base. 

Key Observations and Points of Interest: 

Christopher Luxon’s CO2 Leadership: With 97.21 tonnes of emissions, National’s Christopher Luxon tops the individual emissions chart, likely due to his leadership responsibilities. 

Labour’s Dominance: Their total expenses and emissions overshadow all other parties, suggesting a significant reliance on air travel. 

The Green Dilemma: While the Green Party promotes environmental sustainability, the emissions of some members challenge their eco-conscious branding. 

Te Pāti Māori’s Mixed Performance: Though small, the individual impact of Rawiri Waititi is disproportionately high, accounting for over 50% of the party’s emissions. 

Top 10 MPs by Air Travel Costs from January 1- June 30 2024 

Debbie Ngarewa-Packer (Te Pāti Māori): 

Air Expenses: $42,470 

CO2 Emissions: 58.18 tonnes 

 Willie Jackson (Labour): 

Air Expenses: $34,622 

CO2 Emissions: 47.43 tonnes 

 Rawiri Waititi (Te Pāti Māori): 

Air Expenses: $30,610 

CO2 Emissions: 41.94 tonnes 

Huhana Lyndon (Green): 

Air Expenses: $30,149 

CO2 Emissions: 41.30 tonnes 

 Paul Goldsmith (National): 

Air Expenses: $27,366 

CO2 Emissions: 37.49 tonnes 

Matt Doocey (National): 

Air Expenses: $27,012 

CO2 Emissions: 37.01 tonnes 

Arena Williams (Labour): 

Air Expenses: $26,558 

CO2 Emissions: 36.38 tonnes 

Shane Reti (National): 

Air Expenses: $26,503 

CO2 Emissions: 36.31 tonnes 

Shane Jones (NZ First): 

Air Expenses: $25,336 

CO2 Emissions: 34.71 tonnes 

Barbara Edmonds (Labour): 

Air Expenses: $23,826 

CO2 Emissions: 32.64 tonnes 

The data on air travel expenses and associated carbon emissions for New Zealand MPs during the first half of 2024 offers a revealing glimpse into the environmental and financial costs of political mobility. The analysis, organised by party, critiques the practices of MPs, highlights notable emitters, and emphasises the need for systemic improvements. 

National Party 

The National Party recorded total air expenses of $729,313 and estimated emissions of 999.16 tonnes, the highest among all parties. This is somewhat expected given their large number of MPs and the need to travel extensively across constituencies. Notable contributors include Paul Goldsmith ($27,366, 37.49 tonnes CO2), Matt Doocey ($27,012, 37.01 tonnes CO2), and Shane Reti ($26,503, 36.31 tonnes CO2). The Prime Minister, Christopher Luxon, also has a significant footprint, which is anticipated due to the demands of the role. While the size of the party naturally contributes to these figures, the data suggests there may be opportunities to improve travel efficiency. 

Labour Party 

Labour’s air expenses of $503,544 and estimated emissions of 689.86 tonnes reflect its size and the breadth of its nationwide responsibilities. Major contributors include Willie Jackson ($34,622, 47.43 tonnes CO2), Arena Williams ($26,558, 36.38 tonnes CO2), and Barbara Edmonds ($23,826, 32.64 tonnes CO2). Labour’s emissions are the second highest among the parties, reflecting the travel demands of its members. The figures suggest potential opportunities to explore more sustainable travel options while maintaining their engagement across the country. 

Green Party 

The Green Party recorded air expenses of $206,837 and estimated emissions of 283.37 tonnes. Although smaller in scale than the larger parties, these figures still highlight the environmental impact of air travel. Notable among its contributors is Huhana Lyndon, with $30,149 in expenses and 41.30 tonnes CO2. These emissions, while moderate, suggest areas where the party might refine its approach to align more closely with its environmental principles. 

Te Pāti Māori 

Te Pāti Māori’s air travel expenses totalled $135,935, with estimated emissions of 186.23 tonnes. Individual MPs contributed significantly to this total, including Debbie Ngarewa-Packer ($42,470, 58.18 tonnes CO2) and Rawiri Waititi ($30,610, 41.94 tonnes CO2). These contributions account for a considerable proportion of the party’s overall emissions, reflecting the role of key members in driving the totals. 

NZ First 

NZ First recorded air travel expenses of $120,548 and estimated emissions of 165.15 tonnes. While lower than larger parties, individual contributors such as Shane Jones ($25,336, 34.71 tonnes CO2) and Mark Patterson (from previous data, $21,422, 29.35 tonnes CO2) highlight the impact of frequent travel by certain MPs. The figures provide insights into the party’s overall travel patterns. 

ACT Party 

ACT’s air travel expenses amounted to $148,263, with estimated emissions of 203.12 tonnes. Key contributors include David Seymour ($18,048, 24.73 tonnes CO2) and Laura Trask ($17,852, 24.46 tonnes CO2). While smaller than the major parties, these figures illustrate the emissions associated with their activities and provide a point of comparison with similarly sized parties like NZ First. 

Critical Reflections 

Individual Contributors: High individual emissions from MPs like Debbie Ngarewa-Packer, Willie Jackson, and Paul Goldsmith underscore inefficiencies in planning and decision-making regarding travel. 

Party Discrepancies: The Green Party, despite its environmental focus, has individuals emitting significant levels of CO2, raising questions about accountability and leadership by example. 

National vs Labour: While National leads in both expenses and emissions, Labour’s footprint is not far behind, highlighting the substantial impact of these two dominant parties on total emissions. 

Room for Optimisation: Across all parties, the data suggests significant room for reducing unnecessary travel and exploring lower-carbon alternatives, such as virtual meetings or inter-party collaborations on travel. 

The Bigger Picture: Missing Data 

It is important to acknowledge that the data analysed here may not represent the full extent of MP air travel and associated emissions. Potential gaps include: 

Unreported Domestic Travel: Not all flights may be accounted for due to reporting omissions. 

International Air Travel: International flights, which often have significantly higher emissions, may not be accurately captured or reported. 

Given these potential gaps, the actual financial and environmental impact is likely to be even greater than reported. This underlines the need for improved transparency and comprehensive tracking of all MP travel to ensure a true picture of their environmental impact. 

While the size and scope of parties like National and Labour contribute to their significant footprints, it is not an excuse to avoid scrutiny. Leaders, especially those in roles like the Prime Minister, are expected to travel frequently, but this should come with a responsibility to offset emissions and innovate in reducing their environmental impact. Across all parties, adopting lower-carbon alternatives, optimising travel schedules, and increasing transparency in reporting are essential steps towards aligning parliamentary practices with New Zealand’s climate goals. 

What does the data tell us? 

This report highlights a significant gap in the systematic reporting of carbon emissions associated with New Zealand’s political parties. The findings rely on estimates derived from reported air travel costs, as there are no standardised methods to measure or disclose emissions accurately. This lack of robust reporting reflects a broader issue of insufficient transparency, particularly regarding the emissions directly tied to MP travel. 

Such opacity contrasts with the principles outlined in the Members of Parliament (Remuneration and Services) Act 2013, which emphasises accountability and the responsible use of public resources. Without comprehensive data, it is impossible to fully assess the carbon footprint of MPs. Even for those with reported travel expenses, there is no guarantee that all flight-related emissions connected to their work are included. This incomplete picture underscores the need for improved reporting standards to better understand and address the environmental impact of parliamentary travel. 

To address this, there is a need for comprehensive and transparent reporting mechanisms that account for the full extent of MPs’ travel emissions, including clear rules for reporting by party leaders. Such measures would provide a clearer understanding of the environmental implications of political travel and align with broader goals of accountability and climate responsibility.

 

Closing Section: Expert Insights

Dr Christine Winter, is a Senior Lecturer in environmental, climate change, multispecies and indigenous politics. She highlights the critical role of transparency in governance: 

“Transparency from/in government is a vital part of democracy – freedom of information is a cornerstone of our democratic arrangements. 

Secondly, as employees of ‘the people’ parliamentarians should be accountable to us. 

Greenhouse gas emissions are a form of ‘expenditure’. By that I mean that all current greenhouse gas emissions are adding to the total burden of ghg’s contained in the atmosphere and oceans.  Given the IPCC target of no more than 1.5OC temperature rise (over preindustrial temperature averages) then every emission is costing present and future generations: that is they remove ‘space’ in the atmosphere and oceans that others might need for more weighty things (like food production, heating and cooling of homes. Here I am making a distinction between vital  and life preserving ghg emissions and luxury emissions. We can lump non-essential or extravagant travel into that luxury category). 

Being required to account for their emissions means that the public will be informed of parliamentarian’s ghg expenditure and whether or not they are living their commitments to limit emissions and to meet the 2050 net zero target. 

It is likely too, to make them more cognisant of their emissions – it is easy to overlook them if you are not accounting for them.”  

Dr Winter’s perspective stresses the findings of this report, reiterating that accountability and emissions reporting are not just climate imperatives—they are democratic obligations. 

By Alice Taylor, Peter Mangin and Richard Conway.

Alice Taylor

Alice is a Digital Content Creator at Pure SEO, where she crafts SEO-optimised blog posts, landing pages, and digital features. With over a decade of experience in writing, Alice has previously worked in both the culinary world as a chef and the publishing industry, including authoring her own cookbook, Alice in Cakeland. She also holds a Master’s degree in Politics, specialising in Taiwanese foreign policy, reflecting her deep interest in complex global issues. Outside of work, Alice enjoys Pilates, gardening, creating food content, and is currently learning Italian. She also has a twin brother.

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