Another day of possible record-setting heat is on the way. But the big question is, will we have the power to run air conditioning units and fans. On Friday and Saturday, tens of thousands of California residents lost power to avoid energy overload due to extreme heat and high demand. San Luis Obispo and Santa Barbara counties weren’t impacted. That could change this week. PG&E customers received Flex-Aert messages yesterday, warning of possible outages through tomorrow.