Allow Batteries to only charge from renewable energy sources
Normally, I would relegate this to something that can be automated via scripting... however, given recent developments...
What I'd like is an option for batteries to only charge from renewable sources. Right now this means solar panels, but I phrase it that way to keep it open for any future development.
Here's a scenario:
I have a station on a planet. I have enough solar panels that the entire station can run off it under normal circumstances during the daytime. However at night I have to drain the batteries.
If I'm refining during this process, then the solar panels will never output enough to supply the grid. If I complete refining at night, now I'm running on what little battery is left, if any. If I have no power, I have to run a reactor. However the batteries charge at a loss, so I'm wasting a lot of uranium to charge batteries at night, when I can just wait for the sun to rise and let the solar panels charge batteries.
The issue is without the PB, there's no way to automate this, so I have to babysit the batteries all the time. This is a problem I'd like to solve.
To put it another way:
I want to run my station/ship off renewable energy where possible, but in cases where it's not, I want to have a reactor always running (since it consumes no fuel when not outputting) to automatically handle any brownouts.
However if I dip into the battery during high power usage, I don't want the reactor to immediately recharge the battery. I'd prefer the battery to remain lowered, and wait for solar (if present) before charging that battery (to avoid uranium losses).
I suppose this requires a rework of the power system.