Top-line cross-source view and TSO verification result:
Source 1 (Gizmodo) says Waymo has partnered with B2U Storage Solutions to use retired batteries for grid-scale storage in California and Texas, reusing “thousands of batteries” to store clean energy and support the grid.
Source 2 (WSJ) says Waymo told WSJ Pro Sustainable Business that it is working with B2U to repurpose “thousands” of EV batteries into large-scale energy storage systems to support the grid.
Source 3 (TechCrunch) says Waymo has announced an agreement with B2U to use retired Robotaxi batteries for power systems in California and Texas, and mentions storage capacity of “hundreds of megawatts.”
TSO verification conclusion: the three sources corroborate each other on the core facts. The confirmed shared facts are that “Waymo is working with B2U,” “retired batteries are being repurposed,” “the purpose is grid/storage use,” and “the locations are California and Texas.” There is a discrepancy in how the scale is described, but it does not change the core event.
Shared confirmed facts:
Waymo has a partnership with B2U Storage Solutions.
The batteries involved are Waymo’s retired/used EV batteries and are being reused.
The reuse purpose is grid-scale storage, supporting the power system and storing clean or renewable energy.
The project involves California and Texas in the United States.
At least one source explicitly states that the scale involves “thousands of batteries.”
Main differences or points of divergence:
Different scale descriptions:
Sources 1 and 2 both mention “thousands of batteries.”
Source 3 mentions “hundreds of megawatts” of storage capacity.
These are not equivalent descriptions, and it cannot be confirmed from the available sources whether they refer to the same measurement basis.
Differences in project wording:
Source 1 emphasizes “clean energy” and “support the power grid.”
Source 2 emphasizes “large-scale energy-storage systems” and “shore up the electric grid.”
Source 3 emphasizes serving electricity grids.
The wording is broadly similar in direction, but not identical.
Timing information:
Source 3 includes a June 4, 2026 date in the headline, but Sources 1 and 2 do not provide comparable independently confirmable timing details.
Whether the project was formally launched on that date cannot be confirmed from the available sources.
Background and analysis:
Taken together, the three sources describe a classic battery second-life storage project. The core idea is to convert batteries that are no longer used in vehicles into grid-side energy storage resources. The common emphasis is not on technical specifics, but on the commercial rollout: Waymo is moving batteries that once powered autonomous vehicles into use within the power system.
Beyond the shared facts of the partnership, reuse, and location, however, the sources do not provide verifiable details on total capacity, deployment progress, the exact number of units, grid interconnection arrangements, operating model, or economic terms.
For now, what can be confirmed is that a cross-sector storage partnership has been publicly disclosed. But to assess the project’s real impact on local grids, whether it is fully operational, and how “thousands of batteries” relates to “hundreds of megawatts,” more sourcing would be needed.
Three-source summary:
Gizmodo: Waymo and B2U are partnering to use retired batteries for grid storage in California and Texas, with thousands of batteries involved.
WSJ: Waymo confirmed to the media that it is working with B2U to repurpose thousands of EV batteries into a large-scale storage system.
TechCrunch: Waymo announced a partnership with B2U to make retired Robotaxi batteries serve the grids of California and Texas, involving hundreds of megawatts of capacity.
Conclusion:
Across the three sources, it can be confirmed that Waymo has publicly moved forward with a grid-scale reuse project for retired Robotaxi/EV batteries, with B2U Storage Solutions as the partner and California and Texas as the target locations. Aside from these consistent facts, other details such as capacity metrics, implementation stage, and specific operating arrangements should be treated as unconfirmed based on the available sources.