Besides the technical expertise, Dornier Suntrace can draw on over 5 bn USD power plant financing experience. For each business case evaluation, we develop a taylor-made financial model, which is crucial to find the optimal plant configuration during the techno-economic optimisation. We are using an in-house financial model for project finance and have an automated linkage between the technical and the financial model. We optimise towards the lowest cost of energy considering hurdle rates for return and provide a comprehensive multi- dimensional optimisation of plant parameters with a design of experiment methods. In addition our sensitivity analysis helps us by taking various technical and financial parameters into consideration.