Abstract
This report provides a detailed description of a set of guiding principles that should inform the development and definition of Project Design Envelopes (PDEs) for multiple technology marine energy sites. A PDE approach is a consenting approach that allows a project proponent to submit an assessment of the potential maximum impacts of a range of design parameters within its application. This is often required because at the time of consent application, the details of project design are not finalised. This allows the project proponent with the flexibility to build out a number of potential design options, as long as the project is constructed and operated within the range of parameters assessed.