It operates as a peaking plant and provides electricity into the South West Interconnected System (SWIS).

When it was built in 2005, it was rated at 260.9 MW, and received an upgrade to the current capacity in June 2008.

When gas is not available, the power station can also operate on fuel oil.

[9] Kemerton power station also has four 1.25 MW diesel generators completed in October 2018.

These are used in a contract with the Australian Energy Market Operator to provide the capability for a black start on the SWIS if needed.