Technical Documents - TREDIS is designed so that the functions of its modules are transparent to users via a wide set of reports that show intermediate calculations. There is a set of Summary Technical Documents that explain each of the TREDIS modules and explain the calculations behind their associated reports. There is a separate volume for each module and element of TREDIS, and each economic modeling option. You can view some of the more popular summary technical descriptions via the links below. Additional documentation information is available to registered TREDIS users.