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.Together, these three facilities can power roughly 300,000 homes for four hours during peak demand or when power is limited due to weather or unexpected interruptions. Additionally, they offer flexibility and backup capaci ...