In organic citrus farming the sun is still the most important energy source, like it should be. In conventional farming the use of fertilizers and chemicals can amount to 80% of the energy input, since these substances are produced with oil and gas.  Since Annemarie and her family grow organic fruits, she saves energy and fossil fuel. “We make our own biodiesel. This is made from used sunflower oil which we buy from the local fish and chips shops. We save a lot of money that way, and we burn clean, renewable fuel. Our engines will last longer too!”