The world's most powerful battery storage project under construction north of Sydney, Australia has been hit by a major failure of one of three giant transformers, creating a significant headache for the BlackRock-owned developer ....

> The details emerged from an internal memo sourced by the newspaper. In the memo, Akaysha CEO Nick Carter acknowledged that one of the three 350 MVA high-voltage transformers, supplied by Wilson Transformer Company, suffered a “catastrophic failure” during testing over a weekend in November.

Failure at the storage facility, not of the battery storage system.