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Tariff Parameters

Step 2 of the Gasleser configuration requires three important parameters from your gas bill. These parameters are essential for the correct calculation of your gas consumption and associated costs.

Tariff Parameters Screen

Required Parameters​

1. State Number​

  • What is it? A temperature and pressure-dependent conversion factor
  • Where to find? On your gas bill as "State Number" or "Z-Number"
  • Typical value: Between 0.9 and 1.1
  • Unit: Dimensionless

2. Calorific Value​

  • What is it? The energy content of gas per cubic meter
  • Where to find? On your gas bill as "Calorific Value" or "Ho"
  • Typical value: Between 8.0 and 12.0 kWh/m³
  • Unit: kWh/m³

3. Price per kWh​

  • What is it? Your current gas price per kilowatt hour
  • Where to find? On your gas bill as "Energy Price" or "Price/kWh"
  • Format: Euro per kWh (e.g., 0.08 €/kWh)
  • Unit: €/kWh

Finding Parameters on Gas Bill​

Example 1: Standard Gas Bill​

Gas Bill Example 1

In this example, you'll find:

  • State Number (Z): Usually in the "Consumption" or "Billing" section
  • Calorific Value (Ho): Often listed next to the state number
  • Price: In the "Costs" or "Tariff Details" section

Example 2: Alternative Bill Format​

Gas Bill Example 2

Different gas suppliers present these values differently:

  • Sometimes as a table
  • Often in fine print
  • Sometimes on separate pages

Parameter Entry​

  1. Enter State Number: Decimal value with comma or period
  2. Enter Calorific Value: Value in kWh/m³
  3. Enter Price per kWh: Amount in Euro
Important Notes
  • Use current values from your latest gas bill
  • State number can change seasonally
  • Calorific value is usually relatively constant
  • Price may change with tariff changes

Common Problems​

State Number Not Found​

  • Check all pages of your gas bill
  • Contact your gas supplier
  • Default value: 0.95 (only as emergency solution)

Calorific Value Unclear​

  • Look for "Ho", "Hs" or "Heating Value"
  • Default value for natural gas: approx. 10.0 kWh/m³
  • When in doubt: contact gas supplier

Price Confusing​

  • Look for the energy price (not basic price)
  • Conversion: Cent/kWh → Euro/kWh (divide by 100)
  • Example: 8 Cent/kWh = 0.08 €/kWh
Update

These parameters can change. Check them with each new gas bill and update them in the Gasleser settings if necessary.

Next Step​

After entering all tariff parameters, continue with configuring the Meter Parameters.