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Indiana Natural Gas Corp. Rates

Indiana Natural Gas Corporation provides service in 7 southern Indiana counties: Bartholomew, Brown, Crawford, Dubois, Lawrence, Harrison, and Orange.

To compare average natural gas bills, see the IURC's monthly residential surveys. Key components of a natural gas bill include gas costs and base rates.

Pending Rate Case

Indiana Natural Gas Corporation is requesting a rate increase in a newly filed case.

All publicly filed documents in this case (Cause No. 45889) are available on the IURC's website.

Update (10-3-23): The OUCC and utility have reached a settlement agreement.  The OUCC filed supporting testimony on Sept. 29, 2023.

The utility filed its petition and the following testimony on May 17, 2023:

The OUCC issued a June 29, 2023 news release to invite written comments through Aug. 23. 2023.

Most rate cases take approximately 300 days to complete and a final order from the IURC is not expected until Winter 2024. The OUCC's timeline outlines the steps in the process.

Gas Costs

Natural gas utilities buy gas for their customers in a competitive wholesale market. Indiana law allows utilities to adjust rates every three months to recover changes in those costs, which can go up or down. These costs comprise a significant portion of a residential bill and are recovered through the Gas Cost Adjustment (GCA) process.

  • Utilities may recover wholesale gas costs on a dollar-for-dollar basis but may not profit on them.
  • Before adjusting rates to reflect the costs, a utility must demonstrate that it has shopped prudently in the competitive market.
  • Each GCA filing requires OUCC review and IURC approval.

The utility's most recently approved request (Cause No. 37418 GCA-159) will affect bills for November 2023, December 2023, and January 2024.

Base Rates

Base rates cover a utility's operational, maintenance, and capital costs. Investor-owned utilities are allowed to earn a return on base rates.

The IURC approved Indiana Natural Gas Corporation's base rates in 2014.

Additional OUCC Resources