Natural Gas Glossary

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*Sources:
US Energy Information Administration
Vectren Energy Delivery of Indiana, Inc. (Vectren South) Tariff for Gas Service

Alternate Fuel – The form of energy used by the Customer in place of Gas Service during Curtailment Periods. Gas Service provided by the Company under another Rate Schedule shall not qualify as an Alternate Fuel.

Annual Usage – The Customer’s actual total gas usage for the most recent twelve consecutive billing months or the Company’s estimate of the Customer’s total gas usage for twelve consecutive billing months when actual usage information is not available.

Bcf – The abbreviation for 1 billion cubic feet. 

Bill – An itemized list or statement of fees and charges for gas service, contract services, or other services provided by the Company.

Btu (British Thermal Unit) – A standard unit for measuring the quantity of heat energy equal to the quantity of heat required to raise the temperature of one pound of water by one degree Fahrenheit.

Btu Adjustment Factor – The average Btu content of gas supplied to the Customer, as determined periodically by the Company, which is applied to the Customer’s metered volumetric usage to determine therm usage for billing purposes.

Cashout – The monetary settlement of over-delivery and under-delivery gas imbalances between the Company and Pool Operators, School Suppliers, or Transportation Customers.

Compressed Natural Gas (CNG) – Natural gas that has been compressed to approximately 2,400-3,600 pounds per square inch for subsequent use in Natural Gas Vehicles.

Commercial Customer – Any Customer primarily engaged in wholesale or retail trade and services (including central heating and air conditioning facilities of apartment complexes), any local, state and federal governmental agency, and any Customer not covered by another classification. When Gas Service is supplied through one meter to an apartment house or multiple dwelling, the service shall be classified as Commercial, in which case the applicable Non-Residential service Rate Schedule shall apply.

Commission – The Indiana Utility Regulatory Commission.

Commission’s Regulations – The Rules, Regulations and Standards of Service for Gas Public Utilities in Indiana, as promulgated from time to time by the Commission.

Company – Southern Indiana Gas and Electric Company d/b/a Vectren Energy Delivery of Indiana, Inc. (Vectren South), or Indiana Gas Company, Inc. d/b/a Vectren Energy Delivery of Indiana, Inc. (Vectren North).

Company-Supplied Gas – Gas purchased by the Company for resale to the Customer.

Company’s General Terms and Conditions – General Terms and Conditions Applicable to Gas Service, as amended from time to time, and as approved by the Commission as part of the Company’s Tariff for Gas Service.

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