South Africa typically accounts for more than 70% of the world's platinum mining supply, according to UBS, but the process has been restricted by the country's deepening power crisis.
There will be some recovery in the recycled platinum supply in 2023, but the amount will remain below pre-pandemic levels, the WPIC estimates.
Global automotive demand for platinum is expected to increase by 10% in 2023 to 3.246 million ounces, according to the WPIC.
Jewelry is "probably the area of greatest uncertainty" when it comes to platinum demand, Sterck told CNBC, but it is a relatively small component in the picture.
Industrial demand for platinum will increase by 12% year-on-year in 2023, according to the WPIC, with platinum usage in the glass and medical industries, in particular, expected to increase.