The following are definitions of terms found on your bill:

Due Date: Your bill is due and payable on or before the date shown on your bill. A late payment charge will be applied to amounts not paid by the due date.

Rate Code: This designates your gas or electric billing rate at MidAmerican Energy. Tariff and rate schedule information is available upon request.

Estimated Use: If we are unable to obtain an actual meter reading, the amount of the bill will be estimated based on past usage. Any necessary adjustments for an estimated bill will be made the next time your meter is read and will appear on the following bill.

Prorate Factor: The prorate factor adjusts for a billing period shorter or longer than normal.

Basic Service Charge: The monthly basic service charge partially covers fixed costs incurred to serve each customer, regardless of use.

kWh: A kWh is a unit of electric usage. One kilowatt-hour is the amount of electric energy used to keep one 100-watt light bulb burning for 10 hours.

Energy Charge: The energy charge reflects the cost of generating, transmitting and distributing electrical energy to you and is applied to energy measured during the month.

Demand Charge: The demand charge reflects a portion of the cost of generating, transmitting and distributing electrical energy to you and is based on peak usage.

Energy Charge Adjustment: This adjustment reflects the cost of power plant fuel or purchased power.

CCF: Natural gas is measured by volume. One CCF represents 100 cubic feet of natural gas.

Pressure Factor: The pressure factor adjusts the metered gas usage to compensate for variations in metering and local atmospheric pressure.

Therms, Therm Factors and Btu: We bill you on the number of therms of natural gas used because the heating value of a cubic foot of gas varies. The therm is a unit of constant heating value, and the therm factor converts volumes of gas used from cubic feet to therms. One therm equals 100,000 Btu (British Thermal Units).

Delivery Charge/Distribution Charge: This charge covers the costs associated with distributing gas through our system to you.

Pipeline Transport Charge: This reflects the cost incurred to reserve capacity on the interstate pipeline system in order to deliver gas to you. If the pipeline transport charge is not a line item on your bill, it is included in the gas supply charge.

Gas Supply Charge: This charge reflects the cost of purchased natural gas.