South Africa's Thungela Resources expects a significant rise in half-year profit due to soaring coal prices, it said on Monday, but flagged rising costs amid inflationary pressures.

Thungela said it expects to post headline earnings per share - the main profit measure in South Africa - of between 66.85 rand ($4.03) and 67.45 rand for the six months to June 30, compared to 3.05 rand last year.

The company said while it had benefited from high coal prices, rising energy costs and inflationary pressures had raised its operating costs.

The coal exporter, which was spun off from Anglo American Plc AAL.L last year and listed separately, is expected to release its half-year results on Aug. 15.

Anglo American sold off its residual shareholding in Thungela in March. ($1 = 16.5981 rand) - Reuters