Total Poynting flux generated by the Galilean satellites as a function of system III longitude for different models of the plasma density and interaction strength. Solid lines display the Poynting flux with magnetospheric density models after Bagenal & Delamere (2011) calculated with two different assumptions of the interaction strength controled by κ = 1 (thin blue) and κ = 2 (thick black). The dashed line displays the Poynting flux for individual magnetospheric plasma models, where the dashed black lines are calculated with the full expression given in (53), while the dashed green and the dashed red lines represent upper and lower limits when condition (56) is met. The grey area shows cases where the interaction is expected to be super-Alfvénic, i.e. M_A > 1. More details see explanations in the main text. Results are discussed for each satellite individually in Sects. 3.1.1 to 3.1.4.