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GridStor Acquires 100‑MW White Tank Battery in Arizona Under 20‑Year APS Deal

A 20‑year APS tolling contract secures revenue certainty during Arizona's push for storage to meet record demand.

Overview

  • GridStor closed the purchase of the 100‑MW/400‑MWh White Tank project from Strata Clean Energy, which will stay on as a construction consultant.
  • The project in Maricopa County is slated to enter commercial operation in the first half of 2027.
  • The APS tolling structure gives the utility charge and discharge control to support reliability for its 1.4 million customers.
  • e‑STORAGE, a Canadian Solar business, will supply and service roughly 120 SolBank 3.0 battery enclosures under long‑term agreements.
  • The deal marks GridStor’s fourth acquisition in a year and second in Arizona, adding to a pipeline exceeding 5 GW backed by Goldman Sachs Asset Management.