Pricing defaults are updated quarterly and are based on recent statewide averages for electricity, oil and propane. Natural gas prices are based on recent Columbia Gas residential rates, including fixed and commodity costs. This calculator will provide you with estimates of annual energy costs based on your inputs. Results are estimates only, and may differ from actual bill amounts. See above to view calculator assumptions.

Last updated: 10/7/2019.

Have an emergency?

If you smell gas, think you have a gas leak, have carbon monoxide symptoms or have some other emergency situation, go outside and call 911 and then call us at 1-800-432-9515.