Eskom has been unable to keep up with demand and hopes its emergency measures will drop national demand by 10 percent. "We are calling for a 10 percent reduction by all sectors. That is urgent. Because, if we are not delivering on that, then we are not likely to achieve the 4,000MW that we need to [stabilise] the system," The Star newspaper quoted Minister of Minerals and Energy Buyelwa Sonjica as saying on Wednesday.