South Africa is getting to grips with reforms that could lift its economic potential, its central-bank governor said on Thursday, adding that success tackling a longstanding power crisis could spur progress in other sectors.

The central bank has repeatedly pointed to the need for structural reforms in areas such as energy and freight rail to boost South Africa's growth potential beyond the meagre 1% expected this year and next.

But, until a dramatic turnaround in electricity availability this year, President Cyril Ramaphosa's government had made little headway on initiatives seen as crucial to boosting growth.

"South Africa is getting to grips with the execution of the reform programme in spite of the difficult environment," South African Reserve Bank governor Lesetja Kganyago told reporters.

"We didn't let the good energy crisis go to waste, eventually we got our arms around it and we are dealing with it," he said, referring to the first time in years the country had gone without power cuts for five consecutive months.

If the government addresses other structural constraints, growth could rise to 3.5%, Kganyago said. He gave a similar estimate to the deputy finance minister recently.

Kganyago acknowledged problems remained in the logistics sector, where debt-laden state company Transnet struggles to provide efficient freight rail and port services due to equipment shortages and maintenance backlogs.

Kganyago was speaking three weeks before the SARB's next interest-rate announcement on Sept. 19, when the bank is expected to cut its main lending rate for the first time in more than four years, as inflation has fallen to within touching distance of the targeted level.

He stressed on Thursday there was still much uncertainty influencing central bank decision-making and that risks to the inflation outlook remained.