Algae fuel, protoctist biofuel, or protoctist oil is another to liquid fossil fuels that uses protoctist as its supply of energy-rich oils. Also, protoctist fuels art another to unremarkably legendary biofuel sources, like corn and sugarcane. Once made of algae (macroalgae) it is often called algae fuel or algae oil. Several corporations and government agencies art funding efforts to cut back capital and in operation prices and create protoctist fuel production commercially viable. Like fuel, protoctist fuel releases greenhouse emission once burnt, however in contrast to fuel, protoctist fuel and alternative biofuels solely unharness greenhouse emission recently far away from the atmosphere via chemical process because the protoctist or plant grew. The energy crisis and therefore the world food crisis have lit interest in alga culture (farming algae) for creating biodiesel and alternative biofuels victimisation land unsuitable for agriculture. Among protoctist fuels' enticing characteristics art that they will be fully grown with smallest impact on H2O resources, are often created victimisation saline and sewer water, have a high flash purpose, and art perishable and comparatively harmless to the surroundings if spilled. protoctist value additional per unit mass than alternative second-generation biofuel crops thanks to high capital and in operation prices, however art claimed to yield between ten and a hundred times additional fuel per unit space. The US Department of Energy estimates that if protoctist fuel replaced all the crude oil fuel within the US, it'd need fifteen,000 sq. miles (39,000 km2), that is just zero. 42% of the US map, or concerning half the acreage of Maine. This can be but space of corn harvested within the US in 2000. The head of the protoctist Biomass Organization expressed in 2010 that protoctist fuel may reach value parity with oil in 2018 if granted production tax credits.