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Indiana: Measure consumption before attributing savings
Start with DOE FEMP: boiler purchasing, sizing and lifecycle analysis. The table below links this decision to the represented gas companies in Indiana. It does not establish service or supplier availability for every account.
Build the operating baseline
Record actual billing periods, estimated readings, operating hours and occupancy or production. Separate space heating from process and hot-water use where the available data permits. Explain changes before comparing periods.
Reconcile engineering and procurement
Have qualified personnel evaluate controls, equipment and service capacity. Update the contracted volume forecast after a project and review tolerance or minimum-volume terms. Verify program eligibility and preapproval before treating an incentive as funded.
Indiana utility application
| Gas service company | Contract component to revisit after load reduction | 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
After reducing forecast consumption, revisit Customer-facility charges, supply component and transport/pooling charges. Ask whether the revised operating load changes Indiana North sales or transportation schedule and applicable annual/daily-use category or any conditions associated with Pool operator, agency agreement, usage qualification and delivery start.
Worked check: fixed charges do not fall with every therm
Assume hypothetical use of 10,000 therms at a constant $0.80 supply price and a $30 monthly supply fee. Modeled supply cost is $8,360. If use falls ten percent to 9,000 therms with the same price and fee, the total becomes $7,560: an $800 reduction, or about 9.57 percent of that supply total. This excludes delivery, taxes and project costs and proves no equipment result. The illustration shows why a percentage therm reduction is not automatically the same percentage dollar reduction.
Turn the review into a calculation
Build a monthly weighted budget. 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
- DOE FEMP: boiler purchasing, sizing and lifecycle analysis
- 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.