Thursday, May 7, 2009

New "alternative" energy uses more fossil fuels??

Thanks to an obscure tax provision, the United States government stands to pay out as much as $8 billion this year to the ten largest paper companies. And get this: even though the money comes from a transportation bill whose manifest intent was to reduce dependence on fossil fuel, paper mills are adding diesel fuel to a process that requires none in order to qualify for the tax credit. In other words, we are paying the industry, handsomely, to use more fossil fuel.

The origins of the credit are innocent enough. In 2005 Congress passed, and George W. Bush signed, the $244 billion transportation bill. It included a variety of tax credits for alternative fuels such as ethanol and biomass. But it also included a fifty-cent-a-gallon credit for the use of fuel mixtures that combined "alternative fuel" with a "taxable fuel" such as diesel or gasoline.

Enter the paper industry. Since the 1930s the overwhelming majority of paper mills have employed what's called the kraft process to produce paper. Here's how it works. Wood chips are cooked in a chemical solution to separate the cellulose fibers, which are used to make paper. The remaining liquid, a sludge containing lignin (the structural glue that binds plant cells together), is called black liquor. Because it's so rich in carbon, black liquor is a good fuel; the kraft process uses the black liquor to produce the heat and energy necessary to transform pulp into paper. It's a neat, efficient process that's cost-effective without any government subsidy.

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