Before embarking on a potential project, the proposed sponsor must prepare a 'feasibility study' to assess the project's viability. A feasibility study analyses the key elements of a proposed project (eg issues relating to the economics of the project, technical matters, contract terms, any necessary government support and market need for the project). If the sponsor decides that the project is viable, it will often then use the feasibility study to explain the project to potential lenders and equity investors. An important part of the feasibility study is the 'financial model'. This Practice Note explains what the financial model is, what it is used for and how it is checked by the lenders. For more information on the content of the feasibility study, see Practice Note: Project finance—due diligence and 'bankability'—Technical due diligence/feasibility study in project finance transactions. What is a financial model? In the context of a project finance transaction, a financial model is a spreadsheet which is used to generate, among other things, the forecast revenues and outgoings of the project. A