More work's needed - for New Zealand to meet its climate change targets

New Zealand's ranked in the "low" category in the Climate Change Performance Index - falling from 34th to 41st - out of 67 countries.

Australia's on 52nd, and the UK's improved the most - rising 14 places to sixth.

Index author, Jan Burck , says New Zealand's recent moves on renewables were positive.

But he says the policies aren't in place to reach the target of more than 50 percent renewables by 2030, and energy use is too high.