It's not to do with accumulators, though
![Smile :)](./images/smilies/icon_e_smile.gif)
Incidentally...
I found out the hard way how many accumulators you need to fire lasers at an outpost. The game's vanilla central electricity grid makes it easy to funnel MW over to laser turrets... with High Voltage you need tons of accumulators to cover up for that bit where power requirement goes up a few dozen times for a brief moment. It's exciting but I am also considering making a "rapid discharge" accumulator that costs energy to maintain (fixed drain) but also can discharge itself at a much faster pace for those emergency situations.