The ornamental design for a solar panelpair, as shown and described.
FIG. 1 is a perspective view the solar panel pair showing my new design;
FIG. 2 is a top view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a left and right view thereof;
FIG. 5 is a front and rear view thereof; and,
FIG. 6 is an exemplary diagram of the use of the solar panel pair thereof the broken lines are being shown for illustrative purposes only and form no part of the claimed design.
The broken lines in FIG. 1 to FIG. 5 show portions of the solar panel pair which form no part of the claimed design.