Unfortunately I have no reproducer and no backup. All the autosaves are corrupt as well. I don't have any known system instability issues that leads me to believe there is a hardware problem, but who knows. This save is also 90-some hours of game time without other issues?

Is there no way to put ...

My Saved game and autosaves fail to load. No mods except for at one point was using Max Rate Calculator (but not currently).

Stack trace logging done
33.614 Error ElectricEnergySourcePrototype.cpp:72: Energy source error, most probable cause is the double entity problem.
Logger::writeStacktrace ...