All those projects mentioned are on paper. The coal plants in Kenya are actually being built. Remember that most of the power output from Gibe I-III and GERD are to be exported primarily to Kenya.
And yes, 1,000 MW is a big deal. More than 25 % of homes can be connected to the grid. At current production of approximately 2300 MW ,it works out to about 1/3 of Power output. And at least 60% of yours,if reliable stats exist.