Playing with multiple planets, there is an obvious link between Moshine and Paracelsin (https://mods.factorio.com/mod/Paracelsin).

Both planets add new solar panels and accumulators.
The Paracelsin version of each is a downgrade from the earlier available Moshine version.
Perhaps if Paracelsin is installed, make the Moshine tech have the Paracelsin version of each as a prerequisite?
Maybe even add zinc (unique Paracelsin ingredient) as an added ingredient when both planets are installed.

Not certain if this is possible or reasonable, but it seems like an obvious synergy which would enhance the overall experience.

Thank you for creating Moshine, I love the design and gameplay on the planet!

That was exactly one of the reasons I made this mod: https://mods.factorio.com/mod/xor_planet_tweaks_compat

It does NOT do exactly what you suggested (though I thought about doing it that way), just wanted to mention it in case you might be interested in it.
Personally I think the Moshine versions are way overpowered, which is why I did quite a few of changes to the solar/accumulator stuff in my mod.

But I agree with you, a natural integration in some way would be nice, it would be nice if my mod wouldn't be needed but here we are.

That was exactly one of the reasons I made this mod: https://mods.factorio.com/mod/xor_planet_tweaks_compat

Thank you, nice set of tweaks to the planets. A reasonable solution to the accumulator / solar panel issue, at least until proper integration occurs. Now I think on it, I like having only Paracelsin solar panels and accumulators, but available on Moshine if it is installed. Seems better both for balance and thematically for each planet.