Development of renewables in the heat supply sector raises different issues. Today, renewables provide 33% of South Africa’s primary energy demand for heat supply, the main contribution coming from theuse of biomass. The lack of district heating networks is a severe structural barrier to the large scale utilisation of geothermal and solarthermal energy. Past experience shows that it is easier to implement effective support instruments in the grid connected electricity sector than in the heat market, with its multitude of different actors. Dedicated support instruments are required to ensure a dynamic development. In the Energy [R]evolution scenario, renewables provide71.2% of South Africa’s total heating and cooling demand in 2050.
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