Power has now been restored to a police site after a power cut.
North Wales Police asked the public not to make non-urgent calls after an outage at one of its sites in St Asaph, Denbighshire on Sunday.
"Normal service" had now resumed, the force said, thanking people for their patience.
It comes after the force urged the public not to contact them on Saturday night unless "necessary" as it dealt with "exceptional demand".
"I would like to thank the public for their support during the time of the power outage and I would also like to thank our staff, both frontline and behind the scenes for working tirelessly and professionally to ensure that we still provided high level public service during this time," said Sup Paul Joyce.
We would like to advise that due to exceptional demand tonight please only contact us unless necessary or in an emergency. Your patience and understanding is appreciated. pic.twitter.com/z2E9G3GPnS— North Wales Police (@NWPolice) August 11, 2018