English: "As indicated above, a mandatory product stewardship scheme for solar PV panels or a co-regulatory scheme with strict regulation regarding participation appears to be more appropriate considering the ever-increasing number of panels, increasing the number of solar panel manufacturers, and to avoid free riders. A potential scheme can distinguish between panels from private users and commercial users (Figure 2). In the case of commercially used panels, the EU's WEEE Directive's legislation Business-to-Business (B2B) model could apply." "End-of-Life management of panels from private users is also shown in Figure 2. This process can be much straighter forward compared to a B2B model. Unwanted or damaged panels are removed by installers or collectors from private households and transferred to recyclers for proper processing."