In 2008, the Defense Department consumed roughly $18 billion worth of fuel, a major part of it spent on fueling USAF jets. The Pentagon has to worry about this massive spigot on two fronts – that this money is used to finance the very people the Pentagon is fighting, and the impact on the environment.

Algae growth tank

Algae growth tank

As a result, out of the $7.4b it got in the stimulus package, the Pentagon devoted $300m towards alternative fuel research. This money is apparently being well spent.

One of the experiments is a mobile biofuel generator known as a ‘Tactical Garbage to Energy Refinery’ which converts paper, plastic and food slop into biofuel.

They also have a $6 million project being overseen by the Defense Advanced Research Projects Agency (DARPA) to convert algae into jet propulsion fuel 8 (JP-8).

It seems this little algae project has come up with a breakthrough, with the Pentagon announcing that DARPA will be opening a largescale refining operation in 2011 for producing jet fuel from algae at costs competitive with fossil fuels.

Barbara McQuiston, special assistant for energy at DARPA, told the Guardian that the algae fuel projects, run by private firms SAIC and General Atomics, are expected to yield 1,000 gallons of oil per acre from the farm. The costs are projected at $2 per gallon, heading towards $1 per gallon.

Compared to other alternative fuels like ethanol, algae has the capacity to produce 30 times more energy per acre without having to devote land for cultivation, and fresh water, and without any loss of food products.

A couple of years back, a company called PetroSun made a big splash by opening a 1,100 acre algae farm near Harlingen, TX to produce 4.4m gallons of jet fuel. At that time, the company had plans to open more farms in other states and even outside the US, and claimed that given enough algae farms the size of Maryland, it could satisfy the entire fuel requirements of the US.

Late last year, the company put the plans on hold, blaming the global economic crisis for an inability to acquire the “capital required to retrofit the existing aquaculture farm ponds for commercial algae production.” They also changed their business model, and now say that while they will still be producing algal oil, the major source of revenue to the program will be the value of the co-products, including animal feed and fertilizer.

So while the Pentagon might be on to something to satisfy their own fuel needs, commercial production of jet fuel from algae isn’t exactly a hot market, as of now.

Meanwhile, Bristish Airways announced a partnership with the Solena Group, and aims to establish Europe’s first sustainable jet-fuel plant, which will use landfill waste to produce aviation fuel. BA says the plant is likely to be sited in east London, and will convert 500,000 tonnes of waste per year into 16 million gallons of jet fuel, starting in 2014.

Willie Walsh, British Airways’ chief executive, said in a statement that its all part of a plan to reduce their net carbon emissions by 50 percent by 2050. The Pentagon, for its part, wants its entire fleet of USAF jet fighters and transport aircraft on a 50-50 mix of standard jet fuel and other sources like algae by next year. 

Will the demand for algae jet fuel by big customers like the Pentagon and commercial air carriers make it profitable to run  algae farms as a business venture?

Photo by Randy Montoya (courtesy Sandia)

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