Puget Sound Energy (PSE) and Renewable Energy Systems Americas Inc. (RES Americas) have signed agreements to cooperate on launching an innovative battery storage project in Whatcom County that could pave the way for larger scale efforts in PSE’s service territory.

Electricity will be stored in state-of-the-art battery modules that are as large as 40-foot shipping containers, the same amount of energy found in 1.7 million AA batteries. The battery system will be capable of providing up to 18 hours of power during an outage for the core area of Glacier. The average demand of the core part of town is estimated to be 250 kW.

The Glacier battery units have been online since September 2016, however, the automation of the batteries has not yet been completed. This means that the units cannot automatically shift the power load of the "island" from the power grid to the batteries and back to the grid.

During a planned power outage on Oct. 24, we completed some very useful and valuable testing of the automation, during which the batteries successfully powered the island of the town for approximately 6 hours. Future testing of the automation feature will be required.

During a planned power outage on Aug. 28, we successfully used the battery to back up the island of customers in Glacier

Lithium-ion Battery