About 80% of the-billions of dollars pledged by rich nations for South Africa’s shift away from coal will be loans, not grants, and some may be hard to unlock due to national rules protecting domestic jobs, an official familiar with the matter said. Last year the United States, European Union, Britain, France and Germany committed to investing $8.5-billion over three to five years to help South Africa reduce its carbon emissions, which are among the world’s highest because it depends on coal for 80% of its electricity.