PLS-CADD v14.2 PLS-CADD is the most powerful overhead power line design program on the market. PLS-CADD runs under Microsoft Windows and features an easy to use graphical user interface. It integrates all aspects of line design into a single stand-alone program with a simple, logical, consistent interface. No other program can match the sophisticated engineering capabilities available in PLS-CADD. This sophistication and integration leads to more cost-effective designs being produced in only a fraction of the time required by traditional methods. The PLS-CADD solution is so clearly superior to any alternative that it has been adopted by more than 1400 organizations in over 115 countries.