Examples include the recent 700 MW wind project of the AES Corporation as well as Dow ChemicaTs investment in solar PV, among others. Their origins stem from variations in the financial capacity and strength, as well as the business objectives, of wind project developers. We are not going to discuss these specific financing models, but present the classification developed by Harper et al. ( And veiy often it is the solar and wind energy companies, which have themselves reached the utility stage, that become active investors in their respective sub-sectors.