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Indiana: Build an auditable result instead of a sales story
Start with EIA: natural gas volume, heat content and energy units. The table below links this decision to the represented gas companies in Indiana. It does not establish service or supplier availability for every account.
Define the counterfactual
Retain what the business would otherwise have paid for the same service months and quantities. Identify whether that is an existing contract, an effective utility supply component or another dated written offer. Do not switch baselines after seeing the result.
Bridge model to invoices
Separate quantity changes from comparable price changes, then reconcile fixed charges, retained delivery and timing corrections. Preserve enrollment confirmation and invoices before presenting an actual outcome. A favorable calculator scenario is only a model.
Indiana utility application
| Gas service company | Evidence needed for the baseline | Primary reference |
|---|---|---|
| CenterPoint Energy Indiana North | Customer-facility charges, supply component and transport/pooling charges | Official program / tariff |
| NIPSCO | Utility gas-cost adjustment versus supplier supply charges and fees | Official program / tariff |
| CenterPoint Energy Indiana South | Sales gas cost versus transportation, customer-facility and pooling charges | Official program / tariff |
| Citizens Gas | Utility gas delivery and administrative charges versus third-party gas supply | Official program / tariff |
CenterPoint Energy Indiana North: the program detail behind this decision
Indiana North’s gas tariff identifies Indiana Gas Company as the operating company and lists its own service locations and rate schedules. Keep it separate from CenterPoint Indiana South, Ohio and Houston: the common brand does not make the transportation eligibility rules interchangeable. Centerpoint In North Tariff Alternate.
Apply the evidence to an account file
The case file needs comparable evidence for Customer-facility charges, supply component and transport/pooling charges. First establish Indiana North sales or transportation schedule and applicable annual/daily-use category so the proposed baseline is an available alternative for this account.
Worked case: distinguish a model from an observed result
For a hypothetical 10,000-therm account, $0.80 per therm plus $20 monthly models to $8,240. An alternative at $0.76 plus $60 monthly models to $8,320. That is an $80 increase in the defined supply scope, not a saving. This conclusion is still only a scenario until eligibility, accepted enrollment and actual comparable invoices are established. Keep the same quantity and delivery period in both calculations. Do not present these invented inputs as a local client case or publish them as market rates.
Turn the review into a calculation
Compare constant supply rates and fees. Enter documented assumptions in matching energy units. Keep any charge outside both supply offers separate; the result does not establish eligibility or an available quote.
Read the Indiana utility guide for the wider service-company distinctions. Convert billed gas units using the bill’s heat-content factor when moving from volume to energy.
Sources and review notes
- EIA: natural gas volume, heat content and energy units
- Centerpoint In North Tariff Alternate
- Indiana OUCC NIPSCO Choice
- Centerpoint In South Tariff
- Citizens Gas Delivery
Reviewed October 16, 2026. Program information can change. Confirm the effective utility tariff, supplier availability and written offer before proceeding. Examples and planning tools are educational; they are not executable quotes or verified customer results.