Technical FAQs 4

How many MW of battery storage does PGE have?

In addition to the three new large-scale battery facilities, PGE completed its 17 MW Coffee Creek Battery Storage system near Wilsonville in 2024. The completion of Seaside, Sundial, Constable and Coffee Creek brings PGE's large-scale battery storage capacity to 492 MW.

Where are PGE battery energy storage systems located?

Strategically located at key substations in North Portland, Troutdale and Hillsboro, these four-hour lithium-ion battery energy storage systems are integrated into PGE's system to better align the production and consumption of electricity, which reduces strain on the grid.

What does PGE stand for?

PORTLAND, Ore., Aug. 7, 2025 /PRNewswire/ -- Portland General Electric (PGE) today announces the completion of three new utility-scale battery energy storage systems, adding 475 megawatts (MW) and more than 1.9 gigawatt hours (GWh) of dispatchable capacity to serve the Portland metro area.

Are lithium-ion batteries suitable for grid-scale energy storage?

This paper provides a comprehensive review of lithium-ion batteries for grid-scale energy storage, exploring their capabilities and attributes. It also briefly covers alternative grid-scale battery technologies, including flow batteries, zinc-based batteries, sodium-ion batteries, and solid-state batteries.

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