[en] The so-called 'Environmental Report' is a document containing data and information on the environmental impact of a company; it is being voluntary adopted by a growing number of companies as a tool for environmental management and as a transparent communication protocol between companies and customers. Methodologies and contents of environmental reports are shown, as well as the relevant advantages for companies. Although its activities have a low environmental impact, the gas industry is engaged in further reducing such an impact, by taking voluntary actions such as the adoption of codes of practice and the issue of environmental reports. The contents of SNAM's 1995 Environmental Report are presented, along with the activities carried out, the environmental data and the initiatives adopted for environmental protection