SYDNEY, AUSTRALIA - FEBRUARY 10: A general view is seen of powerlines over the George River National Park on February 10, 2017 in Sydney, Australia. With temperatures forecast to go as high as 39 degrees over the weekend, meteorologists are predicting what could be the hottest three-day spell ever for the city and the Australian Energy Market Operator have warned of possible power shortages due to increased demand. (Photo by Mark Kolbe/Getty Images)
