I am planning to visit Luzon, Philippines, and would probably be staying either in Manila or in Morong, Bataan, possibly in a private residence.
I've read that the electric power system in the Philippines is overtaxed and that rolling blackouts are common. However, some sources have mentioned it as a daily occurrence during hot & dry spells, while others cite only very occasional but major failures.
Are there indeed regular blackouts in these locations, and if so how often do the blackouts typically occur and how long do they typically last?