Bankability in the context of power project development simply refers to whether (or not) the business plan of that project is acceptable to a bank (who is being asked to provide funding).

It is not only an issue of the financial projections presented in the business plan, but will be judged by the bank based on a number of other risk factors too (for example the background or track record of the project developers, the market/policy environment, the status of key contracts and permits and so on).