The Trinidad and To­ba­go Elec­tric­i­ty Com­mis­sion (T&TEC) is still in­ves­ti­gat­ing what caused a sec­ond ma­jor pow­er out­age in To­ba­go last night, less than 12 hours af­ter the first in­ci­dent.

T&TEC’s Head of Cor­po­rate Com­mu­ni­ca­tions, Annabelle Bras­nell, said the out­age be­gan around 6.34 pm and af­fect­ed about 90 per­cent of cus­tomers across the is­land. She said it was not a to­tal black­out, but a par­tial sys­tem shut­down sim­i­lar to the ear­li­er dis­rup­tion yes­ter­day morn­ing.

“Nine­ty per­cent of the cus­tomers last night were back on in un­der 40 min­utes, and the bal­ance with­in an hour. So in both in­stances, no­body would have been out for more than an hour,” Bras­nell told Guardian Me­dia.