The ornamental design for a buoy with solarcells, as shown and described.
FIG. 1 is a perspective view of a buoy for solar cells embodying my new
design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a side elevational view thereof taken from a right side shown in
FIG. 2, the opposite side elevational view being a mirror image of FIG. 4;
and,