JERUSALEM--Israel is likely facing rolling electricity blackouts this summer as a heatwave and natural-gas shortage could result in energy demand outstripping supply, the state-run Israel Electric Corp. Ltd. said Wednesday.

The electricity shortage results from both a shortage in natural gas provisions and lack of sufficient infrastructure, including power stations, the electric company said, although any blackouts would only likely last for one hour each day, and occur in one geographic region at a time, the state company said.