The toolkit provides a set of simplified calculations for determining the costs associated with different energy sources. In many cases, more sophisticated decision support tools will be required. These sophisticated energy tools can be found on the web.
HOMER - http://www.nrel.com/homer
HOMER is a computer model that simulates and optimizes hybrid power systems, which are stand alone power plants that employ some combination of wind turbines, photovoltaic panels, or diesel generators to produce electricity. They may also include batteries for energy storage.
RETScreen - http://www.retscreen.net/ang/menu.php