Arizona is experiencing recording breaking heat this week with an excessive heat warning in effect until Sunday.

With highs of 117 degrees expected in Phoenix on Friday and 113 degrees in Tucson, Tucson Electric Power is asking customers to help conserve energy.

Tucson Electric Power spokesperson Joe Barrios says people should utilize fans since they use less energy than an air-condiitioning system.

“If you have window coverings, blinds or curtains, make use of them. It keeps the sunshine and the heat out. It makes it a little easier to cool inside your home," Barrios said.

Barrios also says summer time is when their energy grid and employees are put to the test. They must keep track of energy supply, watch for monsoon storms and be at the ready if an outage occurs.