Pacific Gas & Electric (PG&E) said the shut-offs on Tuesday are a precaution as high winds are forecast.
It already faces an investigation by regulators after cutting power to almost a million properties in a bid to reduce the fires.
Wildfires fanned by the strong winds are raging in two parts of the state.
Thousands of residents near the wealthy Brentwood neighbourhood of Los Angeles have been told to evacuate because of a wildfire that began early on Monday.
