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Cost of Gas Calculator

SEMCO ENERGY supplier energy charges for February 2024: $0.32750 per Therm*

Consumption of Natural Gas:
Customer Choice Supplier
Energy Charges
Cost Required $
per Therm
*One Therm is equivalent to 100,000 BTUs and represents the thermal energy content of the gas consumed.

SEMCO Supplier Energy Charges are regulated by the Michigan Public Service Commission (MPSC) and may change monthly depending on SEMCO's actual cost for natural gas. An Alternative Gas Supplier's Supplier Energy Charges are not regulated by the MPSC and may change monthly depending on individual contract terms.
SEMCO Cost of GasCustomer Choice Supplier Cost of Gas
Alternative Gas Supplier Information
Current and Historical Natural Gas Rates
This cost calculator represents a comparison of Supplier Energy Charges only. Other charges apply to all customers including:
  • Balance and Demand Charges
  • Energy Waste Reduction Charge 
  • Distribution Charge
  • Main Replacement (MRP) Charge
  • SEMCO Customer Charge
More information about these charges can be found on the How to Read Your Bill page.