At the European Union level there are still over 30 different standards. In the section on lessons from current mechanisms, this study identifies the difficulties of establishing a common verification and certification protocol for the financing of projects. Moreover, the frame of mind of an industry' executive is set on profit enhancing, not savings, which usually plays to the detriment of energy efficiency. The fact is that the scattered nature and the size of EE projects make it difficult to envisage a monitoring of every project independently.