Bongao Power Diesel Plant Curtailment Starting Tomorrow on December 16, 2017. The Power Curtailment in Bongao Grid cause by non arrival of fuel tanker/hauler from Zamboanga City. All sea vessels from Zamboanga City port were orderd grounded by Philippine Coast Guard due to typhoon. Plant Operation will stop at 6:00 am and resume at 6:00 pm until on the following day to prolong its operation serving night time only due to critical fuel supply available.