NMB planned power outage to maintain and repair the critical 132KV power lines. Image: Nelson Mandela Bay Municipality / FacebookIf you live in Nelson Mandela Bay, brace yourself for a major planned power outage this October. PLANNED POWER OUTAGE: WHEN WILL IT HAPPEN? The Nelson Mandela Bay Municipality apologises for the inconvenience and says the NMB planned power outage is a vital step towards a more stable, reliable power supply. HOW WILL THE NMB PLANNED POWER OUTAGE AFFECT YOUR HOME OR BUSINESS?