The development of real time energy maximising control for cyclorotor based WECs re-quires significant linearisation of the existing mathematical models and development of the optimi-sation method to speed up the optimal strategy calculation. The validation of results will require CFD (computational fluid mechanics) modelling in Ansys Fluids software. Foils make Cyclorotor opera-tional principles that adhere closely to tidal and wind turbines (more aerodynamic than hydrody-namic), however, in the case of waves input we have significantly more frequent changes of the non-homogeneous water velocity field. It is also normal to have completely different relative foil/fluid velocity values for each of two hydrofoils, hence the need to develop a new and unique relative foil-fluid velocity estimator and forecaster. It is also important to model the motor, generator, and actu-ators of the cyclorotor. The conversion of the rotational torque will be studied, and the rate of the generated electrical power will be assessed. We will also derive a mathematical model of a cyclorotor-based WEC farm.