Engineering News, Dr Tobias Bischof-Niemz, 15 September, 2017.
ew analysis conducted using updated cost assumptions for solar photovoltaic (PV), onshore wind and batteries shows that the share of renewable energy in an electricity mix that would also be the least cost for South Africacould grow to above 90% by 2050.
Such a portfolio, the study indicates, will be 30% cheaper than the generation mix currently outlined in the Draft Integrated Resource Plan (IRP) Base Case, published by the Department of Energy (DoE) in November 2016.
The analysis represents an update of the least-cost mix presented in March by the Council for Scientific and Industrial Research (CSIR) in response to the DoE’s call for public comment on the IRP Base Case.
In the March response document, the science council argued that the least-cost mix to meet a projected 2050 demand of 522 TWh would comprise more than 70% renewables, with the balance of the energy arising from coal, gas and hydro. Such a mix was calculated to be R75-billion a year cheaper than the one proposed in the Base Case and included no nuclear, which made up 28% in the Base Case.
(Ed. note: What will prevail in our energy decisions – corruption and vested interests, or common sense?).