About 19,000 Southern California Edison customers are without electricity due in part to heat-related power outages, the utility company announced Saturday morning.

“Crews are working as quickly and safely as they can to get the power restored,” said Edison spokesperson Caroline Aoyagi.

In Long Beach, at least 39 customers are affected due to heat-related issues, according to a power outage map on Edison’s website.

About a half dozen other reported outages in the city are a result of equipment problems or are not yet analyzed by Edison, according to the map.

UPDATE: Long Beach breaks 20-year heat record at 107 degrees

In response to the excessive-heat warning by the National Weather Service, Edison officials said they has extra crews ready and additional personnel monitoring the impact on the electrical grid in case high temperatures cause more power outages.

Edison provides service to over 15 million people in a 50,000-square-mile area of central, coastal and Southern California.

Edison officials urge customers to conserve energy when possible to reduce stress on the electrical grid, including by setting the thermostat to no lower than 78 degrees, closing drapes and blinds to keep out direct sunlight, turning off unnecessary appliances and equipment, and using electric fans instead of air conditioning when practical.