US retail giant Walmart has made a strategic investment in home battery storage firm Base Power, while Sunrun has doubled the size of its home battery VPP in Puerto Rico.

Distributed energy resource (DER)-focused company FranklinWH has recently announced advancements in residential energy storage programmes in Louisiana and Iowa.

Tech giant Google and distributed energy resource (DER) platform Voltus have announced an expanded agreement to build a 1GW virtual power plant (VPP) in the US.

German home energy storage and virtual power plant (VPP) company sonnen GmbH, sold by gas major Shell in August, has filed for insolvency.

Distributed energy resource (DER) platform Voltus has raised US$225 million in an oversubscribed Series D financing round and is looking to expand in the US and Canada.

Outgoing California Governor Gavin Newsom recenty addressed approximately 1,200 bills, including several energy storage and solar related bills that were either approved or vetoed.

Three US utilities, Ameren Missouri, DTE Energy in Michigan, and Black Hills Energy in Colorado have recently submitted IRPs with highlighted BESS project additions.

Two publicly funded pilots have launched in NSW, testing ways to extend the benefits of distributed solar and battery storage to households.

Residential battery energy storage systems (BESS) across California discharged more than 580MW of peak power to the state’s grid on the evening of 9 September 2026 via a Tesla-Sunrun VPP.

This edition of news in brief from around the world in energy storage features Engie, Econergy and Inion Software in Central and Eastern Europe.