I added SM to an existing game and couldn't get it to see my solar panels, etc... didn't seen anything obvious so I stripped out mods and did the one-by-one.

No issues with base game + SM, but with with Kopernicus Planetary System Modifier 2:release-1.3.1-3 the solar panels never appear in the SM UI for control. Antennas did still work, just not solar panels.

I'll implement it on my Fork, and I'll make pull request to main mod.

Tested!
arivaldh@370d792

Merged PR.