By the End of 2007, Diesel Made of Pork Fat!

Animal power comes with a new meaning as it stumbles with technology.

And pigs will save the planet with in energy crisis.

Oil company ConocoPhillips will collaborate with Tyson Foods, world's biggest meat producer, to produce bio-diesel from pork fat, but also cattle and chicken fat.

This renewable fuel is thought to be cleaner than petroleum diesel and could be available at oil stations by the end of 2007.

"It is chemically equivalent to diesel itself," said Geoff Webster, of Tyson Foods.

"It has lower carbon dioxide, it is zero sulfur, so many positive benefits for the environment."

By 2010, ConocoPhillips could produce roughly 175 million gallons of animal diesel annually, about 3 % of the company's total diesel production, with the pre-processed fat delivered by Tyson Foods.

Animal fat and other fat rich waste compounds are currently processed in soap, cosmetics and pet food industries.

The several years project will cost 100 million dollars and could enjoy tax breaks.

US oil companies enjoy a dollar-per-gallon tax incentive for developing renewable fuel from animal and food wastes.

Other biofuels, like ethanol, aiming to decrease the burning of fossil fuels, are processed from plants (like corn, palm oil and sugar cane), but they come at a cost of crop production and processing.

"We won't be processing animals simply to get the fat to turn them in to fuel. We're taking a by-product and using that for fuel. We feel that it is a huge step forward as opposed to taking grains which are needed for food around the world and turning those in to fuel." said Webster.

But animal bio-diesel raises some bio-ethical concerns.

The bio-diesel will be mixed with other types of diesel, so it could be impossible to tell at the petrol stations if the diesel is made from animal fat or not.

"A recent report published by the United Nations concludes that the meat industry is responsible for more global warming emissions than all the cars, trucks and planes in the world combined." stated animal rights group PETA.