JOHANNESBURG – After managing to keep rolling blackouts at bay for over 300 days, power utility Eskom shocked the nation by announcing their return following reduced power generation.The announcement coincides with Nersa’s approval of a substantially lower tariff increase than Eskom asked for.WATCH: Eskom announces return of rolling blackoutsEnergy expert Matthew Cruise suspects the return of blackouts could have something to do with that lower tariff increase.”The optics looks really bad that it happens to be on the day that Eskom got the news that they’re only going to get a third of…