By Steve Gelsi

The nation's largest biodiesel refinery went on the block this week for an undisclosed price after the owner shut down the $70 million facility in the face of low demand.

In a sign of the recession trumping policy talk in Washington and elsewhere, GreenHunter Energy Inc. (GRH) said it plans to sell the 105 million gallon-a-year plant by Nov. 15 as it moves to meet roughly $50 million in financing obligations with a key lender.

All this comes less than a year after the June 2008 plant opening on the Houston ship channel that was attended by Texas Governor Rick Perry, who heralded the project as a path toward the future.

Energy prices have since fallen drastically, a global recession has dampened demand for fuel, and federal mandates to produce 500 million gallons of biodiesel a year haven't yet kicked in. To make matters worse, the GreenHunter plant sustained damage last year during Hurricane Ike.

While the Environmental Protection Agency has issued proposed rules to implement the Renewable Fuel Standard, a comment period doesn't end until July 27, with no deadline set on carrying out the new measures.

Left to fend for itself in a market already glutted by gasoline, the plant was idled in February in the wake of a drastic industry slowdown.

Biodiesel production is forecast to fall by about half of 2008's level of 700 million gallons, leaving plants like GreenHunter's on the sidelines, according to estimate from the National Biodiesel Board.

GreenHunter BioFuels said it hired an investment bank to weigh its options, which include an outright sale, possible domestic or international strategic partners, alternative financing or raising new capital.

On Tuesday, GreenHunter said it won a default extension to Nov. 15 with German lender WestLB AG on $38.5 million in principal debt and a $10 million term loan.

"We have positioned the company in a manner that should allow us time to seek a number of solutions to our present financial situation," GreenHunter CEO Gary Evans said in a statement. "This is especially important now that credit markets have begun to improve and crude oil prices, which have a direct correlation to the price of biodiesel, have recently increased."

So far, GreenHunter Energy has fared better than others in the biofuels business, with Pacific Ethanol recently filing for bankruptcy protection for some of its operating units, as well as the high-profile blowup of VeraSun.

Distressed biofuel assets have drawn interest from other energy firms, as shown by some recent transactions. Oil giant Valero (VLO) purchased seven VeraSun plants earlier this year for $477 million in cash. Last month, a bankruptcy judge approved the $8.5 million sale of a Northeast Biofuels plant in central New York to big oil refiner Sunoco (SUN). Green Plains Renewable Energy (GPRE) paid $124 million to buy two ethanol plants in Nebraska from VeraSun.

U.S. biodiesel is typically made from soybeans, recycled cooking oil and animal fats. The government allows a $1-per-gallon tax credit for blending biodiesel with petroleum diesel.

-Steve Gelsi; 415-439-6400; AskNewswires@dowjones.com