The buyer is a Delaware-based partnership named Hines Atlas US.
The sale means PG&E is on track for a phased move to its new headquarters in Oakland. That's slated to begin the first part of next year.
RELATED: PG&E is leaving San Francisco, moving to Oakland
Its new headquarters will be at the 28-story Kaiser Center high-rise at Lake Merritt.
PG&E has been headquartered in San Francisco for more than 115 years.
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