The timeline below sets out some of the key developments in the growth of the Hydrodec Group:
| 1992 | CSIRO commences project to remove PCBs from naphthenic oils |
|---|---|
| 2001 | Hydrodec founded to commercialise technology |
| 2006 | First plant built at Young, New South Wales, Australia |
| 2008 | Plant built at Canton, Ohio |
| 2015 | Commissioning of rebuilt and expanded plant at Canton, Ohio |
| 2016 | Approval of technology as a carbon offset project - only oil re-refining business in the world to receive carbon credits for its output |
| 2019 | Disposal of Australian plant |