Fear and uncertainty surrounding the wildfires in California appear to be weighing on shares of Edison International, whose Southern California Edison is the power utility for the areas directly surrounding the city of Los Angeles.

Edison International stock fell nearly 13% Wednesday after the company shut off power to tens of thousands of customers in Southern California as wildfires blazed through the region.

Edison International’s shares and bonds fell on Wednesday as a wildfire raged across the Los Angeles region, close to areas served by the company’s utility unit.