Sample invoice


Invoicing period

The invoicing period comprises the time during which you received services from us.

Consumption point

Consumption point is the term used for a closed unit (e.g., apartment, single-family home, factory building) that is being supplied.

Contract account

This is where we manage all data that are relevant for your contracts. Please always mention your contract account when you get in touch with us.

Contact data

Here you can find all the different ways of getting in touch with us.


In the overview, you can see how much you paid and how much you consumed during the above billing cycle. A more detailed calculation of the consumption amounts can be found on the next pages.

Total amount

The total amount is calculated based on your consumption during the period of service minus the installments you have paid.

Your new installment

Here you can see the new installment that we have calculated for you. Further information on the items included in this installment and on how to change it can be found on the second page.

Future installments

The future installments are your installments for the following billing year.

They are calculated on the basis of your consumption during the current billing year.

You can increase the amount of your installments at any time. To do so, please use the services offered by our online customer service center (

Due date

Due dates for the following billing year.

Consumption (e.g., electricity)

There is a separate page for the consumption of each type of supply.

Determination of consumption

In this block, your consumption is determined on the basis of the meter readings. Please check every time whether the meter readings are correct.

Previous year's consumption

Here you find the consumption of your household in the previous year compared to the current consumption. On the following page you can see the usual average amounts for your household size.

Costs of electricity

The electricity costs are calculated on the basis of consumption (kWh), the consumption price (ct/kWh), and the basic price.

The amount of electricity that you have consumed is multiplied by the consumption price.

If prices, rates, taxes, etc. change during the billing cycle, we will calculate the consumption pro rata and list it separately.

Basic price

The basic price covers the provision of the meter and the billing of your consumption.

Thermal gas bill

Natural gas is measured by volume, i. e. in cubic meters (m³) depending on the pressure and temperature. The measured volume of natural gas in (m³) is converted to kilowatt hours (kWh) so that it can be invoiced without the influence of pressure and temperature. For this, the consumption in (m³) is multiplied by the conversion factor and the calorific value in accordance with the recognized calibration regulations.

Sample invoice

Download a PDF of the Sample invoice here 

Sample invoice in English (PDF, 655 KB)

Sample invoice

How to contact us

Our locations

Call us!

  • SWK Customer Service Center
    Mon. - Fri. from 8:00 am until 5:00 pm
    Please call (0631) 8001-1200
  • SWK CityServiceCenter
    Mon. - Wed. from 8:30 am until 4:00 pm
    Thu. from 8:30 am until 6:00 pm
    Fri. from 8:30 am until 4:00 pm
    Please call (0631) 8001-1200
  • Energy Consulting Center
    Appointments outside are possible
    Please call (0631) 8001-1602

Write to us!

Service disruption reports

Notify us of disruptions in your power, gas, water or district heating supply.
Around the clock - throughout the year.

  • Emergency service:
    Disruption: (0631) 8001-4444
    Emergency service: (0800) 8958958 (toll-free)
  • Smell of gas:
    Disruption: (0631) 8001-2222
    Emergency service: (0800) 8456789 (toll-free)