ECO's LPG filling stations in Hong Kong and the compressed natural gas filling stations on the mainland which provide vehicular fuel for heavy duty trucks can help reduce vehicular emissions of suspended particulates by 6% and nitrogen oxides by 25%. This can significantly improve air quality and protect the environment.

ECO utilises landfill gas as fuel for production of town gas. The project in NENT landfill site can reduce naphtha consumption for town gas production by 40,000 metric tonnes and mitigatethe emission of carbon dioxide by 135,000 metric tonnes a year - equivalent to the amount removed by 5.8 million trees annually.