Hydroponic set-up found after house fire

A hydroponic set-up that police believe was going to be used for growing cannabis has been uncovered in a blaze at a house in Sydney's south.

A 42-year-old woman was treated for smoke inhalation before being charged with consuming electricity without permission.

She's been refused bail to appear before court on Wednesday.

Firefighters put out the blaze overnight and found that the Beverly Hills house had been altered, with electricity bypassed.