
STIRnetwork collects hard-to-dispose-of used cooking oils from a variety of sources, saving them from adding to the landfill problem, where they emit greenhouse gases and potentially pollute the water table.

A simple process - the boffins call it transesterification - converts the used cooking oils to biodiesel and continues Scotland's role at the forefront of energy provision and innovation.
Any diesel engine, with only a small modification, can be made to run on biodiesel and STIRnetwork has the expertise to expedite the essential conversions. This fuel is cheaper than conventional diesel as there is a 20p per litre reduction in fuel duty for biofuels. Additionally, biodiesel produces fewer toxic emissions.

Arguments that biofuels have a large carbon footprint and compete with food crops for farmland are overcome by our biodiesel being made from waste resources, which has already played its part in the food chain.
STIRnetwork's biodiesel operation is run as a not-for-profit community enterprise, with the goal of taking one industrial sector's waste and creating another's viable resource. In so doing, we look to benefit the local communities and the wider living environment.