Both the new version and the upgrade versions require an activation key. We recommend that you download and install the software first. Run the application and select Help/About from the menu. Note the Site ID number and enter that in the payment form or email it to support@megasyssoftware.com after payment is completed. We will email the corresponding activation key (please allow 24 hours weekdays/48 hous weekends). 

FREE ELECTRICAL DRAWING SOFTWARE

PowerStar and PowerNet may be used as single line diagram drawing software "straight out of the box".  After installation, you can use it to create and edit circuit single line diagrams. Print the circuit or save it as a circuit file for future use. It is free, as we are aware of the very often and urgent need for a quick and easy way to draw a circuit.  When your circuit progresses to a design project, we hope you will buy the license. It will pay for itself when it saves you an hour's work or two.