These numbers are from 2012, and the 620 million in Africa made up about half of the 1.2 billion people worldwide who didn't have electricity in their homes that year. Here are 9 key points from the IEA report:
2) About 80 percent of those without electricity live in rural areas, away from the grid. So at first glance, it might seem like this problem will take care of itself as more people move to cities. But the IEA notes that, unlike other parts of the world, Africa is actually expected to see its rural population grow in the coming years.
3) Even those who do get electricity don't get a lot of it. Ghana, for instance, had to ration its electricity just to make sure people could watch the World Cup. And the average consumption in sub-Saharan Africa is about 317 kWh per year — or less than a modern American refrigerator.
4) The most popular energy source, by far, is "bioenergy" — mainly the burning of wood, charcoal, and dung. That, in turn, produces a lot of indoor air pollution, which is currently killing millions of people per year:
6) Some energy experts have argued that a great way to provide power to rural Africa is through "off-grid" solar panels and wind turbines. The IEA report suggests that there's something to this. On the one hand, off-grid options are still much more expensive than traditional centralized power plants (see chart below). So for areas that are already connected to the grid or close by, fossil fuels are usually cheaper.
But in places where grid connection is too hard or costly, off-grid solar power and "small wind" are quickly becoming competitive with off-grid diesel generators. That suggests renewables could play a major role in big areas:
8) That said, as Alex Trembath of the Breakthrough Institute points out on Twitter, the IEA defines "energy access" as about 50 to 100 kWh per person per year — again, way less than a modern American fridge. So getting the rest of sub-Saharan Africa up to, say, South African levels of electricity consumption would require a much more radical push.
9) The charts above is a good reminder that there's potentially some tension between reducing global greenhouse-gas emissions and expanding energy access in poorer parts of the world.
Africa needs a lot more energy to lift itself out of poverty. And, right now, fossil fuels are still the cheapest way to do that in grid-connected areas — note that coal plants and gas turbines cost just one-third of what solar panels do. (Although in rural areas far from the grid, it's a closer call, and wind and solar power are quickly becoming competitive.) And unless or until clean energy gets significantly cheaper, fossil fuel use is almost certain to rise in the decades ahead.