(12)The criteria for determining whether an economic activity qualifies as environmentally sustainable should be harmonised at Union level in order to remove barriers to the functioning of the internal market with regard to raising funds for sustainability projects, and to prevent the future emergence of barriers to such projects. With such harmonisation, economic operators would find it easier to raise funding across borders for their environmentally sustainable activities, as their economic activities could be compared against uniform criteria in order to be selected as underlying assets for environmentally sustainable investments. Such harmonisation would therefore facilitate cross-border sustainable investment in the Union.