MOD will have no issue getting power IMO - it will just be what form/fuel source ie diesel gensets, grid power or even something like a hybrid diesel/solar given the amount of sun in Botswana. I do think they will get grid power eventually.
The recent note from Arden addresses some of the power issues and highlights Botswana govt are investing quite a bit in their grid and energy security. Below are my estimates of power requirements and costs of the 3mtpa concentrator - the fuel cost of the energy can have quite a material cost of production per pound of copper and the choice of fuel/energy source will be a key consideration in the DFS.