Schemes are specified in terms of the system components that are affected, the benefits of the scheme (such as leakage reduction, increased capacities), together with the scheme costs - both Capex and Opex. Multiple, time-related dependencies between schemes can be applied - for example when a scheme is only feasible in conjunction with another or when schemes are mutually exclusive.
Demand-side Schemes
Demand-side schemes are a vital complement to supply-side schemes. For example it is difficult to obtain Regulator approval to develop new sources without demonstrable progress in areas such as leakage reduction. A variety of demand-side schemes can be specified at any of the demand nodes. The impact of schemes such as customer-driven reduction, wastage controls and leakage reduction schemes can be profiled.
Supply-side Schemes
Supply-side schemes can include a variety of options that change the maximum capacity of components of the system, such as new sources, resource development schemes, water treatment works and inter-zone transmission links. Schemes may raise or lower the capacity of supply-side assets including their profiling.
