The Skype line to a group of power developers in Nairobi is cut abruptly. When it returns, African Energy asks whether the interruption was caused by political turbulence; it surely can’t be due to generation shortfalls? (Kenya is building up a surplus of generation capacity). Of course not, chorus participants at the Nairobi end: it’s down to transmission and distribution (T&D) problems. Across sub-Saharan Africa, investment in transmission – including modern high-voltage lines – has lagged as planners and investors have focused on generation.