Our leadership in this area has been recognised by the Sunday Times in their annual Best Green Companies ranking since its inception in 2008. We have consistently been one of the best performers in the competition, coming within the top five Best Green Companies in each of the last three years. Click here to have a full overview of our environmental initiatives across our renewables portfolio, from recycling used engine lubricating oil (over 2.3 million litres/year) and plastic extraction pipes (over 70 tonnes/year) in our landfill gas business to using special acoustic filters to protect fish in our hydro power stations.
"Our most material source of waste is lubricating oil and ensuring its responsible disposal is our main focus. We use 2.3 million litres of it every year. Lubricating oil is required to ensure the performance and efficiency of our landfill gas engines. After use, we sell our lubricating oil on to a specialist organisation which, after processing, sells the majority as a lower grade lubricating oil. The rest is being used as a fuel. Over a number of years we have worked closely with oil suppliers to develop optimum oil blends for the harsh operating conditions within landfill gas engines due to landfill gas contaminants. As a result, our oil use efficiency has dramatically improved, along with its related environmental impact."