The Berejiklian government plans to tap into its $1.4 billion Climate Change Fund by almost $300 million in the 2019-20 year for programs to help communities and businesses adapt to and cope with impacts from climate change.

National Parks will get more money in the coming year to improve access for the public. Credit:Nick Moir

The $295.4m spending breaks with the habit of recent budgets, in which the fund - drawn from electricity and water use - has routinely collected much more than it has spent.

During the five years to 2012-13, revenue to the fund exceeded outlays by almost half a billion dollars. Over a five year, period, the fund - initially set up to reduce greenhouse gas emissions - will have $1.4 billion to spend.

The government is yet to detail where the climate funds will go. The item, though, was the biggest expenditure in this year's budget on climate or environment issues.