Adjusted for oil inventories, earnings before interest, tax, depreciation and amortisation (EBITDA) were 63 million euros ($74.3 million) in the April to June period, down from 130 million euros a year before.
Global travel restrictions to stem the spread of the novel coronavirus have led to a significant drop in passenger traffic at Greek airports, curbing domestic demand for fuel, Hellenic said.
The refinery will gradually shut down its 148,000 barrel per day (bpd) Aspropyrgos refinery for maintenance from Aug. 28. The turnaround, budgeted at 130 million euros, will take nine weeks and is expected to cut particulate emissions by 50%, it added.
Hellenic is selling its 35% stake in state-controlled gas distribution utility, DEPA Infrastructure. On Thursday, it said shortlisted investors were expected to submit binding bids for the asset in January.