Nothing major but got me wondering. Why is his energy beyond maximum?

I had it happen to me once with HP.
I equipped armour plating, then after a couple of games I took it off as it was too easy - also a couple of opponents quit at the first turn, so I figured less but HP full resist looked a bit less scary and was about as powerful

Back to the point; after removing the armour plates I had too many HP - not the whole amount, and putting back the plates gave me the correct calculation again.
Dunno if that helps track down the bug, the one mentioned in the OP could be a similar thing after removing energy modules?

Thankyou for responses, yeah its probably a bug like bigdaddy22 said, because the level 22 energy module is +20 NRG capacity, and he is 20 over.

I hope this fixed, all it is is some faulty coding and programming of modules.