A total of 16 trucks are responding to the blaze which is currently tearing through Tallawarra Power Station in Yallah Bay.
Fire and Rescue NSW Super Intendant Adam Dewberry said Shellharbour Airport has been closed.
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"We have shut down Albion Park Airport as the smoke plume is impacting the approaching aircraft" he said.
He said the situation is evolving but so far, emergency services are unable to extinguish the blaze.
"At this stage firefighters are unable to fight the fire until the confirmation power has been shut off by the electrical authority."
Tallawarra is a 435-megawatt combined cycle natural gas power station in the city of Wollongong.
More to come.