Yesterday we visited a village where two microhydro generators have been installed. This project was actually sponsored by another organization, but we were the ones who provided the idea and the training. The connection is kind of convoluted since this other organization and ourselves are part of the same network. So the research we did on microhydro gets out to another organization, who sets up an exposure visit to our Farm Research Centre, and farmers from this village get the idea to install hydro generators, which they do. Now two 3 kilowatt generators are running full time on river power through that blue pipe you see, and providing light to 30 homes. a daycare centre and the local  church. It's sort of the butterfly effect in that a seed of  an idea eventually switches on  lights in people's homes.