First Gen Corp. on Wednesday said a fault occurred at the main generator transformer of unit 20 of its 1,000-megawatt Sta. Rita combined cycle power plant in Batangas.
First Gen, controlled by the Lopez Group, disclosed to the Philippine Stock Exchange the unit was under scheduled maintenance outage from July 23 to August 26.
“Investigation is ongoing to confirm the condition of the transformer. If necessary, FGPC can immediately deploy its spare main generator transformer which is stored at the Sta. Rita power plant site,” it said.
The move followed announcements early this week of Aboitiz Power Corp. subsidiary Therma South Inc. and Energy Development Corp. of maintenance shutdown.
Therma South said a 150-megawatt unit of the 300-MW Davao baseload power plant would undergo a 17-day maintenance outage starting Aug. 22 for preventive maintenance.
“This maintenance activity is necessary to review unit 1 and to implement some corrective measures as needed which should be similar in nature to the coverage of work done in the recently planned outage of unit 2 from June 18 to July 13,” said Therma South president and chief operating offer Sebastian Lacson.
The maintenance activity started Aug. 21 and is expected to last until Sept. 7.
“We are confident that after this outage, TSI should be better equipped to reliably meet the needs of our customers. As always, we will try our best to keep the duration of this interruption to a minimum,” Lacson said.