Under the Paris Agreement, the global commitment is to limit warming to below two degrees above the pre-industrial level, but Pacific countries want the temperature rise to be capped at 1.5 degrees.
Mr Shaw said the new New Zealand government intended to pass a so-called Zero-Carbon Act to help curb global warming.
"In relation to the Pacific's goal of a one-and-a-half degree limit to temperature rises, we believe by New Zealand becoming carbon neutral by 2050 is a goal that is consistent with the Pacific's ambitions," said Mr Shaw.