Westphal & Co. is a full-service electrical and technology contractor founded in 1931, with 500+ employees across four locations in Wisconsin and Iowa.

Their solar division designs and installs systems from 20kW to multi-megawatt scale across utility, commercial, industrial, education and healthcare projects, with NABCEP-certified installers and full operations & maintenance services. The Z300 PVT is part of their toolkit for testing and troubleshooting solar module strings in the field.