Power company Pacific Gas and Electric Co. says up to 17 counties may be affected starting on Wednesday. Some of these counties include Yuba, San Joaquin and Solano. The announcement comes as windy and humid conditions are returning to the areas. Southern California Edison is also considering shutting off power for thousands of customers. Counties within Edison's range includes Los Angeles and San Bernardino. The deliberate shut-offs are meant to avoid wildfires, which have devastated California. Recent major blazes have often been linked to equipment malfunctions. Earlier this month, power cuts affected around two million people due to the weather. PG&E Chief Executive William D. Johnson says it could be awhile until the forced shut-offs end. Until PG&E's transmission lines are protected from starting fires, Johnson says they may last up to 10 years.