What's the excess energy bonus of Mass Shield Generator and Nanodrone Cloud?

These modules consume the entire capacitor despite the base energy activation cost.

The tooltip explains that excess energy improves the strength of it.

 

So, what is the scaling of it?

For example, Commitment 13 reads that it replenishes 6pts of shields and 8pts of EM damage for every 1 energy consumed, so that’s easily calculated, but MSG and NDC scalers are a mystery.

They should give 3pts for 1 Energy. ( + the base healing).