Chelsea overcame a power outage at Stamford Bridge to end their winless run against Barcelona in the Women's Champions League in a 1-1 draw.
Play was suspended for close to 10 minutes due to an outage at the stadium which cut all television feeds, meaning that VAR could not be in operation.
Goals from Ellie Carpenter and and Ewa Pajor had left the game in the balance, but the hosts were left to rue missed chances for all three points.
Sonia Bompastor’s side went into the contest having previously beaten their opponents just once in seven Champions League meetings, losing 8-2 on aggregate when the two sides met in last season’s semi-final.
Bompastor was without Sam Kerr, while club captain Millie Bright was dropped to the bench following her testing start to the campaign.
It mattered not though as Carpenter combined with Aggie Beever-Jones before driving forward and smashing the hosts ahead after a blistering counter-attack.
Ewa Pajor would ensure the lead did not last long, capitalising on some poor defending at a corner to level. However, Chelsea remained the team in command.
Wieke Kaptein was denied by both Cata Coll and the foot of the post on separate occasions before the game came to a halt following a power cut in the stadium.
That seemed to take the wind out of Chelsea's sails as the momentum they built evaporated and the visitors began to control proceedings throughout the second half.
The introduction of Catarina Macario appeared to be the spark that the Blues needed as the forward headed Chelsea back in front with her first touch, only for it to be ruled out for offside by the finest of margins.
She then turned provider, setting up Carpenter for a glorious chance to grab a second, but the Australian dragged her effort wide from close range.
The game would remain level, meaning that Barcelona climb to the top of the Champions League standings on goal difference while Chelsea remain outside of the top four required to automatically qualify for the quarter-finals.