Iberdrola Starts 41 MW Oregon Battery Project
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- Iberdrola is constructing its first US battery energy storage project — the Shutler battery project in Gilliam County, north-central Oregon — with a power capacity of 41 MW and 82 MWh of storage capacity, expected to come online in 2027.
- The 41 MW/82 MWh system is a two-hour battery, meaning it can deliver its full 41 MW output for roughly two hours before needing to recharge, a common duration for utility-scale batteries that shift excess renewable energy to higher-demand periods.
- Avangrid, Iberdrola's US subsidiary, already operates roughly 3,000 MW of generation capacity in the Pacific Northwest, providing the parent company an existing regional footprint to build storage onto.
- Battery storage has become one of the fastest-growing segments of the US power sector because it helps utilities extract more value from renewable energy while improving grid reliability.
Why it matters: Iberdrola's entry into US battery storage — one of the fastest-growing segments of the American power sector — comes through Avangrid, which already runs 3,000 MW of generation across the Pacific Northwest. The 2027 Oregon project signals the Spanish utility is now pairing storage with its existing renewables footprint rather than continuing to rely on generation alone.
