(a) When will the flue gas desulfurisation (FGD) scrubbers be fitted on the chimneys at Eskom’s Medupi Power Station, (b) how long have the chimneys been complete, (c) why were the FGD scrubbers not fitted before commissioning, (d) how long will the power station have to be offline to retrofit these scrubbers and (e) how much power will be lost during this stoppage?