Rheem will make approximately 100 jobs redundant as it ends solar water heater manufacturing operations in Welshpool late next year.
The ABC reported Thursday afternoon that 100 out of 150 positions would go, with the jobs remaining in sales and service.
The company has blamed factors including the high Australian dollar, as well as inconsistency around regulations at state and federal levels.
"This also includes an assumption that the RET will survive," he said.
The company’s spokesman Gareth Jennings told the West Australian, “The market for solar heaters globally and domestically has undergone many ups and downs lately and we can't justify a stand-alone factory in WA any more,"
The company will close the factory in late-2015, and the sales and admin roles will be shifted to NSW, along with solar heater production.
Rheem will invest $60 million in upgrading sites at Rydalmere and Liverpool in NSW and at Moorabbin in Vitcoria. These sites would handle what was produced at Welshpool, according to the West Australian.
Rheem Manufacturing Co (Australia) began in Australia in 1937 and its brands include Solahart, Everhot and Vulcan.