Ex-Im – which offers finance to projects that benefit US exports – will offer the loans after singing a deal with South Africa's Industrial Development Corporation.

The agreement was finalised yesterday during a visit to South Africa by US Secretary of State Hillary Clinton.

The US body has deemed South Africa one of its nine key global markets for American exporters.

South Africa is racing to build a renewable energy base as it battles to expand its generating capacity and lessen its reliance on coal.

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