CBS Evening News | Unusually cold weather is stretching all the way through the South and the Gulf Coast region. Many homes use electric heat, and Tennessee's largest power provider expects to set a winter record for electricity demand

Unusually cold weather is stretching all the way through the South and the Gulf Coast region. Many homes use electric heat, and Tennessee's largest power provider expects to set a winter record for electricity demand. Adam Ghassemi of Nashville affiliate WTVF reports. Air Date: Jan 6, 2014