This report summarizes the key contributions and lessons learned from SNL experience in
technical reviews of Controls awardees in the DOE SPA program from 2013-2020. The
purpose of this report is to provide observations and technical suggestions that are likely to be beneficial to the WEC industry as a whole. Over the course of the SPA FOA program, SNL has engaged in technical review for a total of 5 different Controls awardees. The awardees represent a diversity of WEC devices and the application of different control design approaches. The report begins with a summary of key performance metrics results reported by the 5 Controls awardees. This is followed by a summary of observations and lessons learned distilled from the technical reviews of the awardees. The report concludes with a list of general technical suggestions for future WEC controls projects.