Mr. Assefa lost his leg above the knee in a train accident early last year.

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Dr Assefa said this was the culmination of more than a decade of research designed to help internet-based products cope with demand.

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"Hydropower is the cheapest electricity you can generate anywhere so Ethiopia has huge advantages for that and Ethiopia will export enough power to make a difference in the economy, " says Henock Assefa, an economist and managing partner of Precise Consult International based in Addis Ababa.

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