The man, 24, was working on a tower at a height of about 50 metres when he was hit on the head and shoulder by the plastic tubing, which had fallen about 20 metres.
The man briefly lost consciousness and suffered spinal injuries.
Paramedics and emergency services were called to the scene and stretchered the man down a ladder.
The man was flown to The Alfred hospital in Melbourne in a stable condition.
Leading Senior Constable David Rook said the man’s hard hat probably prevented a fatality.
“This shows the importance of wearing safety equipment. It saved his life,” he said.
He described the initial response from AGL as “exceptional”, with the safety of the employee the company’s number one priority. “I also can’t praise the SES and CFA enough for the way everyone worked together,” Leading Senior Constable Rook said.
He said it took time and patience to get the man down the inside of the 50-metre tower.
“It was a bit detailed. It’s not something you can rush though.
“I can’t praise AGL enough — they followed their procedures to the book.”
A spokesman for AGL confirmed that the injured worker was in a stable condition and had been flown to The Alfred hospital in Melbourne as a precautionary measure.