Two companies are splitting the Navy’s biofuel order. Dynamic Fuels, half-owned by agribusiness giant Tyson Foods, converts fats and waste greases into biofuels. The other firm, Solazyme, uses algae as a means of fermenting everything from plant matter to municipal waste into fuel. Both are considered leaders in the next-generation biofuel industry. Dynamic Fuels is one of the first companies in the field to bring a commercial-scale refinery online, while Solazyme has already delivered 150,000 gallons of its fuels to the Navy. This new purchase, at first, will cost $26 per gallon, or $1,092 per barrel. The biofuel will then be blended with an equal amount of conventional fuel, producing 900,000 gallons — for a real price of about $15 per gallon for the 50:50 blend. The Navy currently pays less than $4 a gallon for its JP-5 jet fuel, so the price difference is significant. Still, it’s roughly half of what was paid in 2009 by the Navy for an earlier biofuel trial.