This excellent article is for anyone with an interest is what is really happening with mobile phones in Africa - and why facebook is the power that it is there - and much else besides
I came across it via i-connect http://iconnect-online.org/node/418
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From INTELLIGENT LIFE Magazine, Spring 2011 http://moreintelligentlife.com/content/ideas/jm-ledgard/digital-africa?page=full

(snip)
When it comes to electricity, Africa remains the dark continent. There are a billion Africans, and they use only 4% of the world’s electricity. Most of that is round the edges, in Egypt, the Maghreb and South Africa. The rest of Africa is unlit; seen from space, the Congo River basin is as dark as the Southern Ocean. Demand for power is already outpacing economic growth. With its population expected to double to 2 billion by 2050, Africa will have to build entire new power grids just to stand still. So far, the failure has been systematic: of Nigeria’s 79 power stations, only 17 are working. All of this increases political risk. Some African countries could collapse by 2020 unless they can power an industrial base. Yet Africa’s virtual future is not dependent on its physical future. You don’t need much electricity to run a phone network. You need even less to run a phone itself. Even the scabbiest African village has worked out how to charge mobiles and other devices using car batteries, bicycles and solar panels. Connectivity is a given: it is coming and happening and spreading in Africa whether or not factories get built or young people find jobs. Culture is being formed online as well as on the street: for the foreseeable future, the African voice is going to get louder, while the voice of ageing Europe quietens.

continued at http://moreintelligentlife.com/content/ideas/jm-ledgard/digital-africa?page=full