Powering up Africa’s economies

People in Zanzibar danced in the streets in June to celebrate the resumption of power after a monthlong blackout. Zanzibar, part of the United Republic of Tanzania, gets its electricity from the grid on the Tanzanian mainland, through underwater cables. The blackout occurred after cable lines supplying Zanzibar failed following a surge in demand. For a month, residents paid about $10 daily to fuel diesel generators for power. Small businesses requiring refrigeration or welding had to close because they could not afford the extra cost.