Flames ripped through the brick building at Checkhill Farm in Stourton, destroying the roof.
Firefighters battled for up to five hours to bring the fire under control after it started at around 9.30pm last night.
Crews and police remained at the farm, in Checkhill Lane, today as the barn continued to smoulder.
The barn had been severely damaged by the blaze, which was extinguished at around 2am today.
A section of the roof covering an area measuring around 32ft had caved in due to the force of the flames. The blackened sheets of corrugated metal,which had made up the roof, had collapsed and fallen onto the ground around the barn today.
A patrol car was parked on the driveway of the farm this morning as fire officers spoke to the shocked owners at the scene who were today left counting the cost of the damage.
Fire crews also remained at the farm dampening down to ensure the fire did not reignite as the barn continued to smoulder. The owner of Checkhill Farm was working with police and fire officers as they started to investigate the cause of the fire.
When approached the farm owner refused to comment further on the blaze today.
Fire investigation officers were also sifting through charred debris at the scene to try to establish how the blaze started.
The farm, secluded at the top of a hill, has a number of barns but the one affected by the farm appeared to have machinery inside.
Staffordshire Fire Service confirmed no one was in the barn at the time of the fire.