How to Set Up a Register Rule to Convert Cubic Feet to Therms
Let's assume a gas rate contains therm-oriented charges, but the customer's meters only measure in cubic feet. This means that you will need a register rule to convert the measured consumption into therm-oriented consumption.
The following table shows the array that will be supplied to the rate assuming the customer's meter measures CCF:
Unit Of Measure
Time Of Use
Measured Quantity
Final Quantity
CCF
1000
1000
Now, let's assume the rate contains charges based on therms. This means that the rate needs to have the array changed as follow:
Unit Of Measure
Time Of Use
Measured Quantity
Final Quantity
CCF
1000
1000
TH
1010
As you can see, a new entry was added to the array. This new entry contains the amount of therms associated with the measured CCF. To do this you would need to create a register rule with the following attributes (and link it to the appropriate rates):
Field
Value
Register Algorithm
Bill factor based UOM conversion
UOM (Source)
CCF
UOM (Result)
TH
Bill Factor
CCFCONV
In addition, you will also have to set up the following bill factor and characteristic information:
• Add a characteristic type to define your various take points (call it, TAKEPT). Indicate this characteristic is specified on premises.
• Define characteristic values for the take point characteristic. These will be the take points in your service area.
• Add the bill factor you identified in the register rule (i.e., CCFCONV). Indicate that the type of characteristic to use is the take point characteristic type (i.e., TAKEPT). Add bill factor characteristics for each take point.
• Add a bill factor value for each bill factor characteristic. This value will contain the CCF to therm conversion factor to be used for the specific take point.
• Update the relevant postal defaults so that the appropriate take point will default onto your premises.
• Update existing premises with their respective take point (by specifying the appropriate characteristic value for the take point characteristic).
Fastpath: 
For more information about bill factors and characteristics, refer to Setting Up Bill Factors and Setting Up Characteristic Types & Their Values .