It will cost less for home heating this month, but more for electricity. The city yesterday released utility rates for May showing that natural gas is dropping from $5.18 to $3.76 per gigajoule. The bad news is that the cost of electricity is nearly doubling. In April, Medicine Hat Residents paid 6.8 cents per kilowatt hour and now in May that climbs to 10.19 cents per kilowatt hour. That same rate also holds for small and medium sized commercial users. City officials said previously that prices they charge rate payers are based on an average of what other producers in the province charge their consumers