Would it be feasible to add compatibility with either of the black market or mega black market mods? As it works now, the first time you research solar productivity, the black market accumulators lose the ability to sell power. They do gain what your mod adds (larger capacity and charging), so I'm not even sure this is something your mod can fix.
The two mods are:
https://mods.factorio.com/mod/BlackMarket2?from=search
https://mods.factorio.com/mod/MegaBlackMarket?from=search
