2nd hand cooking oils - a fast rising feedstock for biodiesel - aren't always lightly cooked extra virgin olive oil from elegant Italian restaurants. As this story mentions, it may include Burger fat from abattoirs.

The company in question - Agri Energy - is planning to invest GBP 50m in a power plant in Wales, that will create 35 megawatts of power in capacity and 200,000 tonnes annually of biodiesel.

The company is clearly leaving behind its Australian bioethanol roots. Most of the world's bioenergy companies have a specific focus in one key area. Agri Energy appears to be going in the other direction. For more details, see there website here.