US ROUNDUP: EDP 800MWh Arizona Project, Pathway Targets SPP & MISO, Waymo Second-Life Partnership

Why It Matters

The deals signal deepening investor confidence in grid‑scale storage as a cornerstone of U.S. decarbonization, while second‑life battery use expands supply and reduces costs for renewable integration.

Key Takeaways

• EDP’s 200 MW/800 MWh BESS is the largest in its global portfolio
• Pathway Power secured $150 million senior‑secured debt for early‑stage storage projects
• Waymo will use retired EV packs, retaining up to 70% capacity
• B2U’s plug‑and‑play second‑life tech cuts costs, enabling rapid BESS deployment

Pulse Analysis

Arizona’s power grid is under pressure from rapid data‑center expansion and population growth, making large‑scale battery storage essential for balancing supply and demand. The newly commissioned Flatland Energy Storage project, co‑located with the 200 MW Brittlebush Solar Park, exemplifies a hybrid approach that can draw power from both the grid and on‑site solar. By delivering 800 MWh of dispatchable energy, the facility bolsters reliability for the Salt River Project’s customers and showcases how utilities are integrating storage to meet peak‑load challenges.

Financing for battery‑energy‑storage systems is evolving beyond traditional construction loans, as illustrated by Pathway Power’s $150 million senior‑secured facility from AB CarVal. The capital targets pre‑construction milestones—interconnection studies, PPA negotiations, and equipment deposits—bridging the gap between early‑stage equity and later‑stage debt. This financing model reflects a broader market trend where institutional investors seek exposure to contracted cash flows in emerging storage markets such as the Southwest Power Pool and MISO, intensifying competition among developers for cheap, long‑term capital.

The partnership between Waymo and B2U Storage Solutions underscores the growing economic case for second‑life batteries. Retired EV packs retain roughly 70% of their original capacity, allowing them to be redeployed in grid‑scale applications at a fraction of the cost of new cells. B2U’s plug‑and‑play EPS technology eliminates remanufacturing steps, delivering low‑LCOS storage that can compete with first‑life projects. As EV fleets age, gigawatts of repurposable capacity will emerge, creating a circular supply chain that supports both sustainability goals and the rapid scaling of renewable‑energy integration.