Three energy storage projects have reached key milestones, including pumped hydro, thermal storage, and geothermal alternatives to battery energy storage systems (BESS).

From the US, Maxwell Technologies is acquired for its third time, by Clarios, Fullmark Energy completes a tax credit transfer, and OATI partners with Colville Tribes on microgrid solutions.

Berkshire Hathaway Energy-owned utility PacifiCorp has filed its 2025 integrated resource plan (IRP) with the six state utility commissions in its service area.

In one of his final acts before leaving office, Washington governor Jay Inslee gave the green light for Innergex’s Wautoma Solar and Storage project.

Hawthorne Renewable Energy has commenced permitting for a 300MW solar project co-located with a 300MW/1,200MWh BESS in Grant County, Washington.

IPP Tenska has submitted an application with the Washington Energy Facility Site Evaluation Council for the construction and operation of a 200MW/800MWh standalone BESS.

Microgrid projects in the US states of Washington and Maryland combining battery storage, solar and vehicle-grid integration have gone online.

Programmes to provide home energy storage solutions to low-income homes and businesses have been launched in Washington D.C and Connecticut by Electriq Power and Generac/PosiGen, respectively.

A proposed 2,650MW pumped hydro energy storage project in Washington State has received a preliminary permit from the US Federal Energy Regulatory Commission (FERC).

New technology which can help prevent flammable gas build-up in lithium-ion battery storage systems is being made available for “low-cost, non-exclusive licensing” by the US Department of Energy’s Pacific Northwest National Laboratory (PNNL).