The NSW Upper House is set to force the Berejiklian government to provide more details about how it spends taxpayers’ money, as the state’s tourism and events agency lost another bid to keep secret its expenditure on events like Vivid.

Vivid, which starts on Friday, is one of the highlights of Sydney’s events calendar, drawing huge crowds to witness the lighting of the Opera House sails and other city buildings.

But Greens Upper House MP David Shoebridge said the NSW Parliament does not have a “clear idea” how much money is spent on the government-owned and operated event.

Vivid is the highlight of Sydney's event calendar, but the NSW government will not reveal how much it spends on the event. Credit:Brook Mitchell

“The Parliament doesn’t have any clear idea what has been spent on Vivid, or other similar events,” he said. “While I’m certain much of the public, including myself, supports Vivid and enjoys the spectacle, nothing should be above scrutiny.”