Prices for solar panels are falling. This is great news for small-scale farmers in Africa; instead of spending hundreds of dollars a month for diesel fuel to run irrigation pumps, they can instead purchase simple irrigation kits that make good—and free!—use of the sun. Not only does this save them money, it’s better for the environment and enables them to save labor costs. Plus, efficient and consistent irrigation leads to higher yields.
Wind turbines are also becoming much more affordable. Homeowners in India are using them to provide reliable, off-grid power to their homes, which means less reliance on India's aging electrical power infrastructure.