Fans were left wondering whether their afternoon would end early after a local power-cut put the chance of a kick-off in doubt.
It was 4:30pm when the players finally re-emerged with electricity in the stadium back on and spectators relieved.
Giuliano Grazioli could have instantly rewarded the home crowd for their patience if he had made more of a chance that fell at his feet with a minute played.
Last season's Conference leading scorer is struggling to find his best form this term however, and he failed to control the ball from Adam Gross.
His new strike partner Kandol looked more lively throughout, and his goal was a screamer as he chested a long ball down before volleying home from 20 yards on 27 minutes.
He could not control his joy as he wheeled away in celebration, somersaulting in front of his new home fans.
Shrewsbury had threatened to dominate and should have had a penalty when Glynn Hurst was hacked down by Anthony Charles in the box on 24 minutes.
Kelvin Langmead also put a shot into the side-netting a minute before Kandol's strike and Neil Sorvel had a volley cleared off the line just after.
The visitors took a route-one approach to the second half and put the Bees under aerial pressure, but it was Barnet who nearly doubled their lead.
Dean Sinclair will be kicking himself after scuffing a chance from five yards after a knock-down by Kandol from a corner on 59 minutes. And he also failed to covert a chance after being put clean through at the death.
This was a fiercely-contested match as both teams struggle at the wrong end of the League Two table but the referee seemed to blow up for every tackle.
It might have been a different story had he given Shrewsbury their penalty however.