Guam Power Authority (GPA) has chosen to install two energy storage systems that will help reduce intermittent power outages that Guam has been experiencing from net metering penetration and utility-scale renewable energy projects.
Energy solutions provider LG CNS last week said that it secured a $43 million contract with GPA for the 40-MW/22-MWh energy storage systems.
According to LG, the project calls for a 24-MW/6-MWh storage system for frequency regulation to be located at a substation in the village of Agana, and a 16-MW/16MWh system for renewable integration to be installed at a substation in the village of Talofofo, which is connected to an existing solar farm. LG said that it needs to deliver the systems on a turnkey basis within 12 months.
“This investment will help alleviate system frequency issues, forced outages and support renewable integration,” John Benavente, P.E. general manager, GPA, said in a statement. “Our ratepayers typically experience short outages whenever a generator trips in the system in order for us to avoid a blackout. It is estimated the [energy storage] would eliminate about 77 percent of those outages, thereby substantially improving service reliability to our ratepayers.”
The storage systems will use LG Chem lithium-ion batteries and LG CNS’ energy management system to provide frequency regulation and solar PV ramp rate control.