On Thursday Eskom downgraded load shedding to stage 2 during the nights through this weekend courtesy of new diesel reserves making it to the power utility. Eskom received the major lifeline from PetroSA in the form of 50 million litres of diesel to keep its open-cycle gas turbines running. The turbines are meant to be run only during peak energy demand periods when the normal coal stations cannot handle the surplus. Some experts say as Eskom itself is in a financial bind, the latest diesel delivery means PetroSA is essentially now supplying diesel to Eskom on a credit basis.  We spoke to Energy expert, Prof. Mark Swilling from Stellenbosch University