Utility companies worry about demand on supply system when Polar Vortex hits, offer safety tips | cleveland.com

Utility companies worry about demand on supply system when Polar Vortex hits, offer safety tips | cleveland.com: The Polar Vortex jet stream winds that normally circle the North Pole has weakened and a piece of it in the form of an intense low pressure system packing near-zero and below-zero temperatures is expected to arrive here late tonight and early Wednesday. Dominion East Ohio, Columbia Gas of Ohio and FirstEnergy are preparing for it and have a few tips for consumers to safely survive.