The Pacific National Exhibition was closed for more than an hour Saturday morning after the fairgrounds lost power shortly before the gates were set to open for the day.

Power was restored to about 75 per cent of the site around 12:30 p.m. PT and the grounds were opened to the public.

Full power was restored about an hour later at 1:30 p.m.

The cause of the outage is still unknown, and crews are investigating.