Town of Cardston The Town of Cardston is the default electricity retailer for residential, small business, and farm consumers in Cardston. ResidentialCardston Rate of Last ResortElectricity$0.1206/kWhSmall BusinessCardston Rate of Last ResortElectricity$0.1206/kWh Compare retailer plans in our Cost Comparison Tool. Compare Rates Phone 403-653-5672 Toll free View Website