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Christchurch Airport announces ‘climate positive’ status

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Christchurch Airport’s ongoing sustainability achievements have recorded a new milestone – the airport has achieved being beyond carbon neutral, to become climate positive.

Its general manager for planning and sustainability, Nick Flack, believes that the move makes his gateway a global leader in the transition of airports and aviation to a lower carbon future.

“Achieving this next level in our journey is critically important because airports and aviation support economic activities that earn the most export dollars per tonne of carbon and support improved wellbeing for future generations,” enthuses Flack.

Christchurch Airport has had greenhouse gas (GHG) footprints independently measured and audited since 2006. Taking immediate action to reduce Scope 1 (onsite operational) emissions was the first step and has resulted in close to a 90% reduction in Scope 1 emissions to date.

The airport was recognised as world leading in airport decarbonisation late 2020, when it became the world’s first airport to achieve Level 4 status in ACI’s Airport Carbon Accreditation programme.

As a result, it now mentors airports around the world, including Brisbane and Perth in Australia and New York’s JFK, Newark Liberty and LaGuardia airports in the US, on how to reduce emissions.

Flack says Christchurch Airport will continue to address emissions reduction, ahead of science-based targets aligned with limiting global temperature rise to 1.5 degrees.

“This includes working with airline partners to accelerate the decarbonisation of the aviation sector,” he notes.

“Emissions by aircraft while in the air are a big part of the remaining challenge. Airlines and aircraft manufacturers have plans to accelerate the development and deployment of lower-carbon technology.

“As an airport, our focus is to ensure we are leading development of the necessary infrastructure so we can be early adopters of new technology. New Zealand’s first electric passenger aircraft was developed at Christchurch Airport and leading technological contenders are hydrogen and battery electric power for short-haul aircraft.”

Last December, the airport announced its Kōwhai Park project, on track to be New Zealand’s largest solar energy array at 400 hectares on the airport campus.

“By developing renewable energy, we will have the potential to provide 100% renewable electricity or hydrogen for aviation in Christchurch, and a renewable energy source to power low carbon ground transport and industry for Christchurch.

“We see Kōwhai Park as a step beyond carbon neutrality and a way we can catalyse the low carbon future of the Canterbury region.

“To progress this work, we are working with Hamburg International Airport. Hamburg is the European leader in applying hydrogen within airport operations, and works with Airbus to assist the transition of aviation to more sustainable energy.

“The two airports now work together with regular meetings in the wee small hours to combine our knowledge and accelerate adaptation.”

And Flack insists that his gateway is not stopping there, noting that in addition to this work, Christchurch Airport is voluntarily supporting permanent New Zealand native forestry restoration that removes GHG emissions from the atmosphere.

He says: “We have followed best practice as set out by MfE ‘Interim Guidance for voluntary climate change mitigation’.

“It means before making claims of voluntary climate change mitigation, organisations should first measure their emissions, commit to an emissions reductions plan, and continue to take action to reduce their emissions in accordance with their plan.

“Our ambition is to go beyond ‘neutral’. We want to have a positive net benefit on our environment so are aiming at 25% beyond neutral. We achieved 90% reductions in our Scope 1 emissions, but at the moment, there is no technology available to reduce the final 10%.

“So we are investing in New Zealand based permanent native forestry restoration to remove carbon from our atmosphere beyond our own footprint. This will also actively assist biodiversity, habitat restoration, landscape resilience improvements, soil health and water quality.”

This work sees Christchurch Airport partnering with CarbonZ to support permanent native forest restoration in the Lake Hawea region in Otago, including Manuka, Kanuka and Mountain Beech reforestation.

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