Have some rep! Great story, this is what Elite Dangerous is all about! Those playing Solo mode miss the point!
I had a 'moment' not long ago. Had my Asp fitted out as an Explorer and did some exploring 500ly beyond inhabited systems. I came back, and because I know the Asp is such a good craft for combat I refitted it with a few different gismos, but keeping the Advanced Discovery Scanner for one. I now had lots of utility bits - chaff, point defence, K-warrant etc - and Interdiction module etc etc.
On first interdiction (NPC) I submit, to find everything goes dead!!! No response! Panic! NPC is tickling my shields and I'm not moving or doing anything. PANIC! .... then I realise on changing a few gismos I had forgotten to check total power consumption! Quick!! Modules screen - shut a few off!! Now I have power and can move! Luckily in this time I still had shields left and then was easily able to see him off.... and get a bounty at the same time!
Lesson learned: DO MAKE SURE POWER CONSUMPTION STAYS WITHIN THE LIMITS WHEN CHANGING OR UPGRADING STUFF!!!! You probably check when originally setting up the ship, but may forget when re-configuring!
Anyway, I didn't die, or get close to it like you nearly did! But it was a lesson well learned, in the same way that forgetting to ask for docking permission is to most people too!