Making market operators responsible for having and giving access to information about their impact on the environment is an important part of changing the way the economy operates in relation to environmental sustainability.To this end,the Norwegian access to environmental information act has established a right for the public to access to environmental information from private entities such as business enterprises.In this point,the Norwegian Act goes further than international rules,such as the Aarhus Convention,and also further than any other national legislation.This article presents the rules on access to information from business enterprises,and presents and discusses examples from the implementation of these rules.