Waymo has announced a partnership with B2U Storage Solutions to repurpose batteries retired from its all-electric autonomous vehicle fleet for grid-scale energy storage applications, further advancing the company's efforts to establish a circular lifecycle for electric vehicle batteries. The collaboration aims to extend the useful life of battery packs beyond their automotive service phase while supporting grid resilience and the broader integration of renewable energy resources.
As electric vehicle deployment accelerates, battery lifecycle management is emerging as a critical challenge for the mobility sector. While EV batteries may no longer meet the stringent performance requirements demanded by transportation applications, they often retain sufficient capacity to provide value in stationary energy storage systems. Through its collaboration with B2U, Waymo plans to capture this residual value by redeploying retired batteries into large-scale battery energy storage systems (BESS), delaying recycling and maximizing material utilization.
B2U's technology enables second-life battery packs to be integrated into stationary storage installations that can absorb electricity during periods of surplus generation and discharge energy back to the grid during peak demand. Such systems play an increasingly important role in improving grid stability, supporting renewable energy integration, and enhancing energy resilience in local communities.
The initiative reflects Waymo's broader sustainability strategy and leverages the unique operating characteristics of autonomous mobility services. Because vehicles in the company's ride-hailing fleet experience significantly higher utilization rates than privately owned automobiles, Waymo expects a growing supply of batteries suitable for second-life applications over time. The company views battery repurposing as an important intermediate step in the battery value chain, enabling batteries to continue delivering useful energy storage capacity before ultimately entering material recycling processes.
By extending battery service life, the partnership seeks to improve resource efficiency and reduce waste associated with end-of-life batteries. According to Waymo, batteries removed from its fleet will begin a "second life" supporting local electricity infrastructure in the communities where the company operates. This approach aligns with the growing industry focus on circular battery ecosystems, in which reuse, repurposing, and eventual recycling are combined to maximize the value extracted from critical materials.
The collaboration also highlights the increasing convergence between transportation electrification and stationary energy storage. As electric and autonomous vehicle fleets continue to expand, second-life battery systems are expected to become an important source of energy storage capacity, providing a bridge between mobility applications and grid infrastructure.
By combining autonomous driving technology with battery circularity initiatives, Waymo is demonstrating how electrified transportation assets can contribute beyond mobility and support broader energy transition objectives. The partnership with B2U illustrates the potential for retired EV batteries to serve as distributed energy resources that help strengthen electricity networks while extending the lifecycle of valuable battery materials.
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About Waymo
Waymo is an autonomous driving technology company and a subsidiary of Alphabet. The company develops the Waymo Driver, a fully autonomous driving system designed to enable safe and convenient mobility. Through its Waymo One ride-hailing service, the company operates an all-electric autonomous fleet and continues to invest in technologies that enhance transportation safety, accessibility, and sustainability. In addition to autonomous mobility, Waymo is pursuing initiatives aimed at improving the environmental footprint of electrified transportation through battery reuse and circular resource management.
