One of the biggest announcements from last year’s COP26 climate talks was a pledge by some rich countries to provide $8.5-billion to help South Africa transition away from coal. Now different interests within the country are tussling over how that money should be distributed. Eskom Holdings, the embattled state-owned utility, is proposing that a substantial portion be used to expand the grid in order to encourage more investment in renewable electricity, according to people familiar with the situation.