PV competes with conventional and renewable electricity sources.While module prices have been decreased substantially,the cost of installation has declined at a lower rate.Indeed,the largest cost drivers today are the BOS costs in which installation,racking/mounting hardware have a significant importance.The next step change in cost reduction of PV-Installations is only possible with a system approach and an industry wide cross-value chain collaboration.A frameless design coupled with the bonding technology allows the elimination of redundant metals.The mounting interface,which is structurally bonded with silicone to the back of the module,replaces the frame.Depending on the individual designs,the savings can be up to several cents per Watt peak,if a holistic approach is taken.This design enables PV to become more cos-competitive with other electricity sources.Removing the module frame and bonding back-rails brought a lot of skepticism from industry experts because of the unproven concept,durability and reliability requirements.Our studies allow to:-technically validate that the frameless design with silicone-bonded mounting interface (rails) is robust enough to overcome the mechanical and climatic stresses over the life time of the installation;-optimize the design of the frameless modules with FEA modeling (in factory bonding or on-site panelization);-develop a silicone-bead bond line calculation tool;-develop an application process to bond the frameless modules onto existing racking rail designs,using innovative integrated equipment;-demonstrate the full concept with on-site mock-ups and installation trials.