Bongani Bingwa speaks to Dr. Ranajit Sahu, US-based coal plant expert:

Nearly all Eskom power plants persistently exceed air pollution limits stipulated in their licences. This is according to a new report by US coal plant expert Dr Ranajit Sahu, who found that the power utility's coal power plants exceeded its already-weak licence conditions almost 3,200 times

: 00:00