GREEN BAY, WI (WTAQ) - Heating costs for customers of We Energies were 24 percent lower last winter than the previous year. The warmest winter on record helped consumers leave their furnaces turned off much of the time. March temperatures were reported to be 43% warmer than normal. Heating costs during the November through April period were a little over $500 for the typical customer, about $157 less than the winter before.