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Daylight saving change to cut greenhouse emissions

A lobby group that has spent more than a decade pushing for the extension of daylight saving in New South Wales says the move should help reduce greenhouse gas emissions.

The New South Wales Government is joining with Victoria, Tasmania and the ACT in pushing for a common starting and finishing time for daylight saving.

The plan which is due to be announced today will see daylight saving starting on the first Sunday in October and return to standard time on the first Sunday in April.

For NSW, it would mean daylight saving would start three weeks earlier and end a week later.

Daylight Saving Extension Association secretary Tony De Govrik says a longer period of daylight saving will have environmental benefits.

"Obviously there's a lower demand for energy during the periods of daylight saving," he said.

"In fact that's why they introduced it for the two world wars. So that means a corresponding reduction in greenhouse gas emissions from our coal-fired power stations."