Powerhouse Museum heading west

Sydney's Powerhouse Museum is set to move from Ultimo to Parramatta in what the government says is a bid to boost cultural capital in the west.

Premier Mike Baird confirmed the relocation as part of a plan to give western Sydney better access to art and science education.

"Why should cultural facilities just be in the centre of the city?" he said on Wednesday.

"Western Sydney deserves it."

Mr Baird said stakeholders would need to be consulted before a timeframe was announced.

The Old Kings School in Parramatta is one of several potential sites for the museum.