Making biofuel
from wastes


We manufacture significant quantities of biodiesel from used cooking oil and other food wastes. By processing our own biodiesel, we have been able to significantly improve the greenhouse gas savings from the biodiesel we supply.

Converting waste oils and fats into biodiesel

Greenergy owns and operates a biodiesel production processing plant in the port of Immingham on the east coast of England.

The plant was built in 2007, initially to process a variety of vegetable oils such as rapeseed and soy. Since that time, we have made a number of investments at the plant to allow efficient treatment of used cooking oils and animal fats (tallow), which are more complex to process than virgin oils such as rape or soy.

Our biodiesel plant is now producing biodiesel from waste oils and fats exclusively and, following a series of process and technical improvements, we have been successful in significantly driving up both throughput and yield.

Extracting oils and fats from solid food waste for biodiesel production

In order to extend our use of waste-based biofuel even further, we have now begun to process biodiesel from the oil and fat in high fat solid foods such as pies, sausage rolls, pastry and crisps. The oils and fats in these foods are extracted and then further purified before we convert (esterify) them into biodiesel. We only use foods which are not fit for sale, for example because they are mis-shapen, overcooked or past their sell by date.