tidbit: Flavour text/descriptions are Lacking energy stats.
This is also all relative to the current gamemode.
Energy is probably in general too plentiful?
2000 To start; chaff costs 250, Energy generation is 50/s? A chaff costs 5 seconds relatively.
Large energy capacitors provide 4500 extra energy. 2000 is probably already too much, or a regeneration rate of 50/s. (big box might have too much energy too)
I'd recommend trying honestly halving everything maybe, Energy generation, Max energy, and capacitor energy.
I unfortunately don't have access to the other modules to put things into perspective, but even if a MDD costs 500, That probably is fair atm with a 1000 energy pool.
Currently if you have eight chaff, You can launch all eight just like that, that's a massive energy pool to just have access to. (or a issue of chaff)
Other thing, Activation cooldowns/general cooldowns.
These probably need to be increased for a few parts, or relevant modules should be mechanically changed to charge to fix this a bit and utilize the energy system.
The lack of a active/reserve energy pool means you can kinda just mash modules atm, you have a ton of working energy. larger cooldowns or a reserve/active energy pool could fix this probably.