I've started my first playthrough since your overhaul of the electric system, and while it so far seems to work OK, there is one thing that as an Electrical Engineering student makes my heart cringe: the use of the term "Power Units" on the systems terminals.
It just so happens that power does have a unit, and that unit is called the Watt (W). Would you sleep for 6 "time units", eat lentils worth 150 "nutrition units" or have 6.6 "volume units" of oxygen in storage? Probably not, so why use "power units" as a measure of power?
You might argue you want to keep the game comprehensible for everyone rather than 100% realistic, but then I'd counterargue that you do use the term "sol" rather than "day", and that most people know that Watt has something to do with electricity consumption/production. Just for the sake of immersiveness, I urge you to change "Power Units" into "W" or "kW". Similarly, in the habitat status screen you could mention the charge as (kilo)watt-hour (Wh or kWh) rather than just as a percentage, similar to how you display the oxygen and water. Also, when talking about battery charge, you should use the term Energy rather than Power (as an analogy, energy is the amount of fuel in your car's tank, while power is l/km (gallon/mile for Americans)). In short, what now shows up as "Reserve Power: 39.9%" in the habitat panel should IMO be changed into "Reserve Energy: 123.4 kWh [39.9%]".
The good thing is that such a change would purely be textual. "Real" electricity works with "Power Units" as well (except that they have the name Watt), so nothing would have to be changed to the power system itself. Perhaps you'd just want to scale the number to get a more realistic result; as a reference, you could probably assume a 30%-ish solar panel efficiency when the game takes place, while the Viking 1 lander measured around 500 W/m2 (source: https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890018252.pdf), resulting in around 150 W (0.15 kW) per square metre solar panel.
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