The Guam Power Authority is requesting its valued customers to continue conserving power from 5 p.m. to 11 p.m., and implement conservation measures such as turning off water heaters and limiting full usage of air conditioning at their homes and offices. 

Enacting conservation plans reduces the demand for energy and can mitigate the need for outages.

Today, three power plant units are operating at limited capacity and one baseload unit is offline for major engine overhaul. GPA reassures it customers that plant personnel are working around the clock to get generator units back online and increase system capacity.

Power Plant Status Update:

  • Baseload unit Piti#8 is still operating at a limited capacity of 30 MW since March 25, 2025 due to high liner temperature issue.
  • Baseload unit Piti#9 was taken offline on March 30, 2025 for major engine overhaul. The unit is expected to return to service on April 21, 2025.
  • Baseload unit Cabras#1 is operating at limited capacity of 33 MW due to monitoring of boiler operation.
  • Piti 7 CT is still operating at a limited capacity of 18 MW due to high exhaust gas temperature.

GPA’s recent progress to address Guam’s power capacity shortfall has reduced the frequency and scale of load shedding events in the last few months. 

However, when two or more baseload units are offline for emergency repairs or limited in capacity production, it puts the power system in a precarious situation, leaving it vulnerable to some capacity shortages until we bridge the gap to the new Ukudu Power Plant scheduled for commissioning by September 2025.

To increase capacity and assist with generation shortfall, GPA is working with its Battery Operators to shift up to 16 MWh of Battery Energy Storage System. 

GPA is also requesting assistance from our U.S. Navy partners to help with additional capacity during peak hours.

Guam Ukudu Power, GPA’s partner for the Ukudu Power Plant is undergoing testing as part of the plant commissioning process. Testing schedules vary due to planned activities. GUP will not be testing tonight as it prepares units for additional tests.

GPA thanks the community for its continued patience and understanding. Together, we can beat the peak! For the latest updates, customers are urged to visit GPA’s website and follow our social media channels.