Editing Net energy gain (section)

===Biofuels===
Net energy gain of [[biofuels]] has been a particular source of controversy for [[ethanol]] derived from [[Maize|corn]] ([[bioethanol]]). The actual net energy of biofuel production is highly dependent on both the bio source that is converted into energy, how it is grown and harvested (and in particular the use of petroleum-derived [[fertilizer]]), and how efficient the process of conversion to usable energy is. Details on this can be found in the [[Ethanol fuel energy balance]] article. Similar considerations also apply to [[Biodiesel#Efficiency and economic arguments|biodiesel]] and other fuels.