Keck Energy is a leading distributor of motor fuels in Iowa. With our own fleet of transports and tankwagons, we can deliver any quantity needed from 100 gallons on up. Quantity discounts. We specialize in the agricultural, construction and commercial industries. Keck Energy has been a leader in biofuels, delivering biodiesel for more than 10 years. We offer BP branded fuel as well as unbranded. Products sold: #1 diesel, winter blended diesel, ULSD #2 diesel, on road and off road diesel, bio diesel B2 to B99 blends, premium diesel, ethanol, E85, gasahol and unleaded gasoline.