Adrian Macey: Victoria University Adjunct Professor on the financial challenge with NZ's climate change targets

A looming financial issue is being highlighted as the country works towards its next emissions budget.

The Climate Commission is recommending greenhouse gas is limited by 134-million tonnes between 2036 and 2040.

But Victoria University Adjunct Professor Adrian Macey told Mike Hosking that there's still a massive issue if we are going to meet our Paris pledge.

He says a government between now and 2030 is going to have to find about $20-25 billion to buy carbon credits.

Macey doesn't see any government being able to feasibly do this.

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