First Gen Corp said its power plants in Batangas province remained operational despite the eruption of Taal Volcano.
Any decision to stop operations will consider "safety and good utility," First Gen said in a statement. Continued ash fall can damage the plants' gas turbines, it said.
"We are coordinating closely with the National Grid Corp of the Philippines and Manila Electric Co, and we will work with the Department of Energy, should any curtailment be warranted," First Gen said.
First Gen has 4 natural gas plants in Batangas.