Before moving day, you’ll need to contact utility providers to make sure the lights turn on, the water is running, and the heat works at your new home or apartment. Here are the utility providers for Littleton, Colorado: Water: Denver Water Electricity: Xcel Energy Gas: Xcel Energy Also, don’t forget to contact your current utility providers to terminate services at your old place. Otherwise, you’ll get charged for utilities you aren’t using. For a comprehensive walkthrough, read our guide to setting up utilities in Colorado.