The accumulators when they are charging, the power level indicator on the chart do not show the charge level. When they are discharging, it works as you'd expect.

Mods in use:
Advance-Solar 1.1.0
AutoDeconstruct 0.1.12
LightedPolesPlus 1.3.2
beautiful_bridge_railway 0.17.0
far-reach 0.0.10