The Inga project, well-known to anyone interested in hydropower on the African continent, has been an idea in the heart of Congo's desire to develop and the heart of many economists that see Inga as the answer to Africa's energy needs. The siting of Inga can harness 11% of global hydropower potential - yes global not just Congo River - and this is found on one stretch of the Congo River, downstream from Kinshasa. I wrote a bit about this twice in 2013 (here is the second post) and it is the highest traffic post I've written receiving more than 4500 hits to date.
The two tenders are big companies, one of which constructed Three Gorges Dam and we all know how efficient that dam is running. Perhaps they have learned from their mistakes? With Congo's internal political challenges, it will be quite interesting to see how and when this project can get off the ground. The estimated cost of 50 billion dwarfs Ethiopia's GERD, which is the largest hydropower project being constructed on the African continent right now.