This project by SELF (Solar Electric Light Fund) brings solar electricity to the people so they can irrigate their gardens.  By combining solar-powered pumps with drip irrigation, SELF helps the women farmers in Benin grow food for their families year-round, in spite of a six-month dry season. The UN will showcase this project at the Climate Change conference in Paris in December.  Go here to see article and pictures:

http://earthtechling.com/2013/03/solar-power-in-africa-helps-villages-meet-basic-needs/