MANILA, Philippines - Energy Secretary Jericho Petilla warned the Luzon grid will be on "yellow alert" again on Wednesday.
A yellow alert means the power reserve is less than 600 megawatts.
In an interview on ANC, Petilla said the Malampaya power plant will be conducting maintenance activities, which would affect its generating capacity.
But Petilla says there should be no risks of an electricity outage as long as other power plants don't go offline at the same time.
"We expect a yellow alert again on Wednesday. The Malampaya will have a restricted capacity. Ibig sabihin they cannot supply the entire 2,700 MW because they're doing some maintenance. They're supposed to do the maintenance today, pinamove lang namin because there are two plants that are on forced outage, Masinloc and Pagbilao, since about a week ago," he said.
Meanwhile, Petilla clarifies the Department of Energy's interruptible load program is voluntary.
He said malls and other big establishments don't have to use their generator sets if they don't want to.
The Federation of Philippine Industries has raised concerns about fuel costs if they run their gensets, as well as damage to their equipment.
The program is among solutions proposed by the Energy department to avoid a shortage in power supply.
"We're not really telling them: mag-genset ka na lang... There are manufacturing companies that decide to use when they look at the Meralco bill and the projected Meralco bill... We're trying to come up with the projections and give it to the industry. If they see na mas mataas pala this coming May or April, they might decide to use their genset because it's cheaper in the long-run," Petilla said. - ANC