The environmental impact and energy balance of a biofuel are important to its market viability for a few reasons. If the end goal is to reduce anthropogenic environmental impact, use of biofuel would not be worth the effort if the result would be trading one problem for another. If the end goal is investment in profitable production and the environmental impact is a net negative, disposing of the byproducts and consumption of resources can be expensive. Additional expense leads to higher market prices, and lower profit. In addition to other motives, regulations relating to environmental impact, such as EPA emissions standards, have indirectly affected the production of BD.