According to Wisconsin Public Service, the demand and supply of natural gas, mixed with the temperatures, could cost customers $100 extra over the course of the season.
Wisconsin Public Service spokesman Kerry Spees says other factors like kids being kept home from school and packed houses are also part of the problem and no one is safe.
"My bill in January covered two cold periods one in January, one in December, he says, "and my bill said it was 43% colder than normal for that period this year than last year and my bill was up about 40%"
Customers say it's an inconvenience but it could be worse.
"well I'm not happy about it," Vikki Keigley of Green Bay says, "but it's understandable I feel sorry for people that can't make those payments."
WPS says simple steps like "set back" thermostats will help, but it is only mother nature that can truly correct the course.
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