In addition to the risk mitigation efforts discussed above, there is also the need for some sort of „rating agency‟ or standard setter to „approve‟ green projects (such as green bonds or green funds) to ensure that funds are used for green investments (and there is a common definition of „green‟) and that insurance and guarantees can therefore be reliably offered. For example a recent report on pension funds and infrastructure (see Inderst 2010) notes that within the Prequin infrastructure database a surprising high number of energy funds claim a focus on renewable energy (176 out of a total of.