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.

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.

Tech giant Google, Tesla, utility Pacific Gas and Electric (PG&E), and distributed energy resource (DER)-focused company Sunrun are launching a new virtual power plant (VPP) in California, US.

Sunrun has agreed with distributed energy resource platform Voltus to support its Bring Your Own Capacity (BYOC) programmes for AI hyperscalers.

Distributed energy resource (DER)-focused companies Sunrun and FranklinWH are expanding in California and Texas, US, respectively.

US residential solar and energy storage installer Sunrun, energy management platform Renew Home, and Tesla have announced an agreement to deliver more than 16GW of flexible energy capacity to US hyperscalers and utilities.

The Puerto Rico Energy Bureau (PREB) has approved a motion from Tesla, residential solar and battery installer Sunrun, and residential solar installer SunStrong Management to auto-enroll participants in an emergency capacity resource programme.

In this Energy-Storage.news roundup, FlexGen updates its EMS, LandGate launches a BESS site selection tool, ON.energy and Shoals target AI data centres, and Sunrun has a successful season of dispatching energy with PG&E.

Home battery storage and virtual power plant (VPP) specialist Lunar Energy has raised US$102 million in an oversubscribed Series D financing round led by B Capital and Prelude Ventures.

Ed Gunn, VP of revenue at home battery storage and virtual power plant (VPP) specialist Lunar Energy, on the market’s recent past and future potential.