The presented decision tree for selecting engagement tools demonstrates the choices available to assist Transmission System Operators, or other owners of the engagement process, in deciding which tools to use.

Four categories of tools are identified – information provision, consultation, co-decision making and empowerment – and they are organised according to the size of the intended audience (small, medium, large) and the amount of resources required to implement the tool (low, medium, high). These resources are a combination of money, time and capacity. The different tools will require differing amounts of each resource: some tools are relatively straightforward to implement but can be very time consuming (e.g. doorstep visits), others require a significant financial expenditure (e.g. public opinion surveys) and other require specific expertise (e.g. facilitation for focus groups, workshops etc.). Many require a combination of two, if not all three, of the resources. While there are no exact numbers on the size of the audience, we can assume that small audiences might range from the individual level to groups of around 20-25, medium audiences might include around 100 people and large audiences might be anything from over 100.