Modules
DESS is comprised of a series of individual modules which are available independently so that you can license only what you need. The core editor/display module is required, but each of the analysis modules is optional depending on your needs. The modules in DESS are:
Core Module (required) - functionality for editing data, viewing maps and viewing and saving analysis results
Load Flow Analysis Module - load flow, motor starting, SCADA load flow and related analyses
Feeder Analysis Module - capacitor optimization and phase balancing
Open Point Optimization Module - optimization of open points (including switches) for loss reduction
Short Circuit Module - fault analysis to determine fault currents and impedances
In addition to the main modules listed above, DESS also allows the creation of plugins which provide additional custom functionality. Available plugins are described here.