Thousands of passengers were stranded at Calgary Airport during a power outage Saturday. (Larry MacDougal/Canadian Press)

Calgary International Airport officials say they will meet with electricians and Enmax to determine the cause of a power outage on Saturday.

The terminal was in the dark for four hours after a major power bump, leaving thousands of passengers stranded as flights were delayed or cancelled while electricians worked to restore power.

Essential airfield services were kept running by generators.

"We had all of our essential systems up and running right away," said airport spokesperson Jody Moesley.

"All of those systems weren't affected by the outage. What you're looking at is non-essential services such as, unfortunately, some lights in the terminal building and some of the computers that process passengers."

Moesley said stakeholders will hold a debrief meeting to figure out what went wrong.

"What we do is we take a step back and look at what happened and how we can work with our partners and electricians to make sure it doesn't happen again."

Moesley said airport officials did their best to provide updated information to passengers during the outage.