Just make nuclear power generator (as a commander weapon), it should generate 100E, work as a mobile pylon. BUT! Fits in commander lvl3 weapon slot and explodes as singularity! That's the twist.
And module should cost 2000-2500 metal.
Edit: scrap that. Consider this.
- Fusion weapon module: can't attack, gives pylon range, produces 15 E. You get fusion explosion on death. Chassis: Strike, Support, Battle, Bombard.
- Each E-cell module gives 10% damage and 10% blast radius, if you have fusion explosion weapon module. Otherwise just energy.
IF you get both fusion weapon module and beautiful stack of 8 E-cell modules, you lose all bonuses either of them provide. And get this instead:
- 100 E, 100% singularity explosion radius, 60% singularity explosion damage. Walking pylon.
So this works kinda in a way conversion modules work, expect that you need not only conversion module, but entire stack.