A police officer gestures towards cars as she tries to control traffic during a power outage in Sarajevo, Bosnia, Friday, June 21, 2024.(AP Photo/Armin Durgut)
An empty electrical train stalls during a power outage in Sarajevo, Bosnia, Friday, June 21, 2024. (AP Photo/Armin Durgut)
A woman waits next to the trolleybus as the traffic stops due to a power outage in Sarajevo, Bosnia, Friday, June 21, 2024. (AP Photo/Armin Durgut)
A man cools himself at a public fountain in Belgrade, Serbia, Friday, June 21, 2024. A major hourslong power outage hit much of the Balkans on Friday as the southern European region sweltered in an early heat wave that sent temperatures soaring to more than 40 C (104 F). (AP Photo/Darko Bandic)
Children enjoy the drizzle from a public fountain before sunset in Bucharest, Romania, Thursday, June 20, 2024 as temperatures exceeded 38 degrees Celsius (100.4 Fahrenheit). The national weather forecaster issued a orange warning for western and southern Romania where temperatures are expected to reach 38 degrees Celsius (100.4 Fahrenheit) in the coming days. (AP Photo/Vadim Ghirda)
Children enjoy the drizzle from a public fountain before sunset in Bucharest, Romania, Thursday, June 20, 2024 as temperatures exceeded 38 degrees Celsius (100.4 Fahrenheit). The national weather forecaster issued a orange warning for western and southern Romania where temperatures are expected to reach 38 degrees Celsius (100.4 Fahrenheit) in the coming days. (AP Photo/Vadim Ghirda)
Residents and tourists fill up their water bottles from a public fountain in Belgrade, Serbia, Friday, June 21, 2024. A major hourslong power outage hit much of the Balkans on Friday as the southern European region sweltered in an early heat wave that sent temperatures soaring to more than 40 C (104 F). (AP Photo/Darko Bandic)
A young man cools off in the drizzle from a public fountain before sunset in Bucharest, Romania, Thursday, June 20, 2024 as temperatures exceeded 38 degrees Celsius (100.4 Fahrenheit). The national weather forecaster issued a orange warning for western and southern Romania where temperatures are expected to reach 38 degrees Celsius (100.4 Fahrenheit) in the coming days. (AP Photo/Vadim Ghirda)
Children enjoy the drizzle from a public fountain before sunset in Bucharest, Romania, Thursday, June 20, 2024 as temperatures exceeded 38 degrees Celsius (100.4 Fahrenheit). The national weather forecaster issued a orange warning for western and southern Romania where temperatures are expected to reach 38 degrees Celsius (100.4 Fahrenheit) in the coming days. (AP Photo/Vadim Ghirda)
Children enjoy the drizzle from a public fountain before sunset in Bucharest, Romania, Thursday, June 20, 2024 as temperatures exceeded 38 degrees Celsius (100.4 Fahrenheit). The national weather forecaster issued a orange warning for western and southern Romania where temperatures are expected to reach 38 degrees Celsius (100.4 Fahrenheit) in the coming days. (AP Photo/Vadim Ghirda)
A child plays next to a public fountain before sunset in Bucharest, Romania, Thursday, June 20, 2024 as temperatures exceeded 38 degrees Celsius (100.4 Fahrenheit). The national weather forecaster issued a orange warning for western and southern Romania where temperatures are expected to reach 38 degrees Celsius (100.4 Fahrenheit) in the coming days. (AP Photo/Vadim Ghirda)
A man a public fountain before sunset in Bucharest, Romania, Thursday, June 20, 2024 as temperatures exceeded 38 degrees Celsius (100.4 Fahrenheit). The national weather forecaster issued a orange warning for western and southern Romania where temperatures are expected to reach 38 degrees Celsius (100.4 Fahrenheit) in the coming days. (AP Photo/Vadim Ghirda)
Children enjoy the drizzle from a public fountain before sunset in Bucharest, Romania, Thursday, June 20, 2024 as temperatures exceeded 38 degrees Celsius (100.4 Fahrenheit). The national weather forecaster issued a orange warning for western and southern Romania where temperatures are expected to reach 38 degrees Celsius (100.4 Fahrenheit) in the coming days. (AP Photo/Vadim Ghirda)
A bird cools itself at a public fountain in Belgrade, Serbia, Friday, June 21, 2024. A major hours long power outage hit much of the Balkans on Friday as the southern European region sweltered in an early heat wave that sent temperatures soaring to more than 40 C (104 F). (AP Photo/Darko Bandic)
A woman carries plastic bags walking by a public fountain before sunset in Bucharest, Romania, Thursday, June 20, 2024 as temperatures exceeded 38 degrees Celsius (100.4 Fahrenheit). The national weather forecaster issued a orange warning for western and southern Romania where temperatures are expected to reach 38 degrees Celsius (100.4 Fahrenheit) in the coming days. (AP Photo/Vadim Ghirda)
A woman cools herself as a pigeon drinks water from a public fountain in Belgrade, Serbia, Friday, June 21, 2024. A major hourslong power outage hit much of the Balkans on Friday as the southern European region sweltered in an early heat wave that sent temperatures soaring to more than 40 C (104 F). (AP Photo/Darko Bandic)
A police officer gestures towards cars as she tries to control traffic during a power outage in Sarajevo, Bosnia, Friday, June 21, 2024.(AP Photo/Armin Durgut)