The demand for low power ice protection systems and the introduction of further regulations for flight into known icing will stretch current technologies and the analytical tools required to support them. This paper considers an approach in the development of an analysis tool for the assessment of an electro-thermal – electro-mechanical deicing system. The tool development is part of a 4 year EU programme (project ‘HETEMS’ – Hybrid ElectroThermal and ElectoMechanical Simulation) and will include the wind tunnel testing of a hybrid deicing system to provide validation data. The various analytical components required by the system are presented and some of the issues in applying them are discussed. The tool will aim to provide a 2D and 3D capability and allow both conceptual and detailed design strategies.