This presentation provides a high-level overview of key technical and process best practices that emerged from RMI’s June 2010 “Solar PV Balance of System” design charrette in a graphical format. It includes the main charts and graphs that summarize the report analysis and recommendations. BoS costs—all the upfront costs associated with a PV system except the module—account for over half of PV system cost and pose a barrier to widespread adoption. This summary focuses on the recommendations to reduce costs across the PV industry. The full report (RMI document ID 2010-19) and executive summary (RMI document ID 2010-20) are also available.