V 12.0 2875 Building Capacitor Solar while following "Robinson Protocol" Item Volume = 1600 SU. personal capacity is 500 SU This means that you can not take the solar capacitor from the portable constructor to place on your newly built base.
Hopefully they resolve this by lowering the volume of the capacitor instead of removing it from the portable constructor. It would be a real shame to have to build a generator, fuel tank, small constructor, and cargo boxes just to be able to build the solar.