Virtual power plants aren’t new. There are already 30 to 60 gigawatts of them in operation today across the US.
Hydropower accounts for at least 80% of electricity generation in the Congo, Ethiopia, Mozambique, Uganda and Zambia.
Africans have invested in hydropower but drought makes it risky, and a new study from Italy finds solar and wind are a better bet.
As climate change makes extreme rainfall more common, it will further test flood-fighting capabilities.
The Sun-Ways installation relies on a train that rolls out a stream of solar panels to deliver renewable energy from between the rails.
Current power lines aren't far-reaching enough and plans are afoot to extend transmission in hard-to-reach areas.