(TNS) — The era of available electricity whenever and wherever needed is officially over in wildfire-plagued California.

Pacific Gas & Electric served stark notice of that “new normal” this past weekend when it pre-emptively shut power to tens of thousands of customers in five Northern California counties. The utility warned that it could happen again, perhaps repeatedly, this summer and fall as it seeks to avoid triggering disastrous wildfires.

The dramatic act has prompted questions and concerns: What criteria did PG&E use? Did the shutdowns prevent any fires? And what can residents do to prepare for what could be days without electricity?

(TNS) — With temperatures soaring and strong winds blowing through forests across Northern California over the weekend, rural areas in the Sierra Nevada foothills plunged into darkness after Pacific Gas & Electric Co. shut off high-voltage transmission lines to avoid sparking wildfires.

The first formal deployment of its new Public Safety and Power Shutoff rules left more than 20,500 PG&E customers in portions of Butte and Yuba counties without power as 260 utility personnel conducted safety patrols, repaired electric infrastructure and inspected 800 miles of transmission and distribution lines, officials said.

Several insurance companies have filed lawsuits blaming Pacific Gas & Electric Co. for a deadly California wildfire that destroyed 14,000 homes and triggered billions of dollars in insurance claims.

The lawsuits filed by Allstate, State Farm, USAA and their subsidiaries come on top of several other cases filed by victims of the Camp Fire, which devastated the towns of Paradise, Magalia and Concow north of Sacramento after it started Nov. 8.