Notes about the WTG file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The WTG file type is primarily associated with 'WAsP' by Risų National Laboratory. WAsP (Wind Atlas Analysis and Application Program) is a PC program for predicting wind climates and power productions from wind turbines and wind farms. A WTG file is a data file in XML format containing one or more sets of power and thrust curves characterising a wind turbine generator.