Puget Sound Energy innovation project

Glacier battery storage project

2018 project updates

The December 2018 testing went well. PSE’s engineers are reviewing the results of the testing to make improvements going forward.

Project overview

Puget Sound Energy has worked hard over the last few years to improve the reliability of electric service for customers in the area. Just this year, we’ve brought the Glacier battery project online, moved power poles farther from SR 542, trimmed and removed trees near power lines, and installed equipment necessary to use the batteries for backup power during an outage.

These upgrades allow us to meet the current and future power needs in your community, as well as your expectations for safe, reliable and affordable electric service. Read below to learn more about the battery pilot project and other projects in the Glacier area.


Battery storage project

The project entails installation of a 2 megawatt (MW) / 4.4 megawatt-hour (MWh) lithium-ion battery system at the existing Glacier substation.
The project is funded in part by a generous $3.8 million Smart Grid Grant from the Washington State Department of Commerce in addition to
$7.4 million invested by PSE.


The Glacier battery storage pilot project performs three primary functions:

  • Serves as a short-term backup power source to a portion of the local Glacier circuit during outages.
  • Reduces system load during periods of high demand.
  • Balances energy supply and demand, helping to support greater integration of intermittent renewable energy generation on PSE’s grid.

For more information, see our Glacier battery storage project fact sheet and frequently asked questions.


Other PSE work in the Glacier area

In addition to the battery pilot project, there have been several other projects completed in the Glacier area in recent years.

The Glacier battery storage pilot project performs three primary functions:

  • In 2014, PSE installed supervisory control and data acquisition technology (SCADA), allowing us to receive information about Glacier’s electric system remotely. With the addition of the battery system, we can now learn about outages in real-time and remotely activate the batteries to restore power after an outage.
  • In 2015, PSE replaced a pole and its switch which allows PSE to more reliably respond to storms and other issues in the area’s power system.
  • In 2016, PSE worked with Washington State Department of Transportation (WSDOT) to move power poles farther away from SR 542 to meet requirements for the “control zone” – an area adjacent to the roadway that should be free of obstructions. This will improve safety and reliability in the area by reducing the likelihood of pole-vehicle collisions.
  • PSE has also trimmed and removed trees near poles to reduce the frequency of tree-related power outages.

Contact us

We welcome your questions and comments. Please contact:

Shane Richards
Project Manager


Learn more