The power company sent out a message to customers imploring people to cut back on energy use this Monday morning and explained that power supplies were limited.
Spokesperson Jeff Brooks says the rare move did make a difference.
"We're back to normal operations and we don't anticipate any more challenges this week," said Brooks.
Ann Neeriemer lives in Raleigh and has been conscious of the cold temps.
She's been keeping the thermostat as low as possible in her Brentwood home to avoid a big bill.
"This neighborhood is built in the 60s, and nothing's very well insulated," she said. "It's definitely a kind of a leaky house, but we keep the thermostat relatively low, and then we went and bought some firewood. When we get chilly, like in the evening or around dinner we'll light a fire."
Duke Energy says small measures in the home can add up to big savings on your upcoming energy bill.
Brooks recommends making sure air filters are clean so the HVAC isn't working harder than it has to, open the blinds on the sunny side of the house to warm up rooms, and try washing clothes in cold water instead of hot.
He also suggests choosing the low comfortable setting and challenge yourself to push it a degree or two lower if you're away from the house.