Biodiesel can be made from any oil-producing crop. For example, an acre of sunflowers yields about 102 gallons of biodiesel fuel.
PHOTO: MOTHER EARTH NEWS STAFF
A biofuels dispenser at Baca Street Biofuels in Santa Fe, N.M., offers a blend of 20 percent biodiesel, 80 percent petrodiesel.
NREL/CHARLES BENSINGER AND RENEWABLE ENERGY PARTNERS OF NEW MEXICO
Biodiesel, a clean, renewable fuel that can power any diesel engine.
Biodiesel can be produced on any scale from an industrial facility to a blender in the kitchen. This trailer holds all the equipment necessary to produce biodiesel on the road.
Many crops can be used to produce oil for biodiesel, including soybeans, which yield about 48 gallons per acre.
North Dakota Extension specialist Gary Willoughby uses biodiesel to fuel a tractor.
AP PHOTO/MINOT DAILY NEWS, MARVIN BAKER
Shawn Antaya of Boulder, Colo., holds biodiesel, which costs him about 50 cents a gallon to brew.
AP PHOTO/DAVID ZALUBOWSKI
Harvesting oil from algae is still in the research phase, but estimates indicate it could produce more than 3,500 gallons per acre.