Magnetic effects involving Jupiter’s moon Io result in an effective voltage of about 400 kV, which drives current of some 5 MA between Io and Jupiter’s polar regions. At Jupiter the current produces auroras analogous to those on Earth, as well as powerful bursts of radio waves that help radio astronomers analyze the Jovian current system. Estimate the total power associated with this current system, and compare with the 2-TW rate at which humankind consumes electrical energy.