The National Energy Regulator of SA (Nersa) has approved tariffs to boost investment to help meet its alternative energy target. The tariff sets out the price per unit of electricity to be paid for energy from renewable sources generated by private power producers: R1.25 for each killowatt-hour produced from wind, 94c for hydro, 90c for electricity from landfill gas and R2.10 for power from concentrated solar. - Reuters