PHOENIX AP-Utility executives on Monday warned of skyrocketing electricity prices if the country is forced to limit greenhouse gases and new technology to capture carbon emissions from coal does not pay off.

“CO2 emissions is the biggest issue in this industry since Edison invented the light bulb,” William Johnson, chairman, president and chief executive of Raleigh, N.C.-based Progress Energy Inc., said during a panel discussion at financial conference of the Edison Electric Institute, an industry group.