For example With 2x Flow capacitor consoles.. each shot does 2.6 energy transfer for me. With 3 of them i get 2.8. 4 of them and full spec with a good deflector and i can hit 3.0 per shot.
It is the difference between stealing 8 power. (unspected) and 24, fully spec'd and consoled. It makes a big difference in overall effectiveness. As part of a "drain bop" flow Capacitors are essential
Couple that with a target shields or target engines... and either a tykens or a siphon... and your target is powerless. literally.
Drain bops are fun. They are high dps, and effective in stf's especially against elite tac cubes. You can strip their shields, throw out enough dps to pull aggro and then get your arse to 10k fast. Kite tank for the win. Lose aggro dart in, shut down their shields again. Meanwhile your team is shooting an unshielded, debuffed cube that's busy chasing a bop it cant catch.