By Michael O. Dioha, Norbert Edomah, Ken Caldeira The divergent fates of two community mini-grids in Nigeria illustrate why energy systems should be built to enable economic transformation. Over the past two decades, the United Nations, the World Bank, regional development banks, and national governments have led efforts to give more people access to electricity. The movement has made significant gains: in Asia alone, about 1.2 billion people have gained electricity access since 2000.