This webpage describes the EnergyPLAN model, designed to analyse the energy, environmental, and economic impact of various energy strategies. The key objective is to model a variety of options so that they can be compared with one another, rather than model one ‘optimum’ solution based on defined pre-conditions. Using this model it is possible to illustrate a palette of options for the energy system, rather than one core solution. This could classify EnergyPLAN as a ‘simulation’ tool rather than an optimisation tool, even though there is some optimisation within the model. It typically takes approximately two weeks to learn how to use the basic functions of the EnergyPLAN tool. EnergyPLAN can be divided into two primary sections: The technical design of the energy system; and the cost of all the components in the energy system.