Texas Bitcoin mines threaten to crash the power grid—and are already causing energy prices to spike

Residents in the small town of Granbury are raising alarms over noise from a local Bitcoin mine, while state lawmakers warn about the risks to the grid.

GRANBURY, TEXAS — Cheryl Shadden cannot sleep. The 61-year-old nurse, who works at hospitals giving patients anesthesia, says she’s kept up at night by the nonstop mechanical whir of fans spinning to cool tens of thousands of computers.