> For the complete documentation index, see [llms.txt](https://help.immodio.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.immodio.app/en/anleitung/betriebskostenabrechnungen/heiz-und-warmwasserverbrauch/angaben-zum-fernwarmenetz.md).

# Information on the district heating network

This page explains when you have to store information about the district heating network in your operating cost statement and where you can find it.

If the **heating and/or hot water supply** of a property is connected to a district heating network, under Section 6a HeizkostenV the annual greenhouse gas emissions and the primary energy factor of the district heating network also have to be stated in the heating cost statement. The data is provided by the district heating supplier.

{% hint style="info" %}
Immodio asks for the district heating network details in the operating cost statement if you have stored "district heating" as the energy source for the heating and/or the hot water supply under "Features" in the property or the unit.
{% endhint %}

### Where does this information come from?

The greenhouse gas emissions and the primary energy factor of the district heating network are provided by the district heating supplier concerned and do not have to be calculated yourself.

You will usually find the values:

* on the annual statement from the district heating supplier
* on the district heating supplier's website

If you do not have the information, you can request it directly from the supplier.

### What do these terms mean?

<details>

<summary><strong>Greenhouse gas emissions</strong></summary>

Greenhouse gas emissions indicate how many greenhouse gases are produced when generating one kilowatt hour of district heating. The figure is usually given in grams of CO₂ equivalent per kilowatt hour (g CO₂e/kWh). The lower the value, the more climate-friendly the district heating is generated.

Example:

* District heating network A: 45 g CO₂e/kWh
* District heating network B: 180 g CO₂e/kWh

</details>

<details>

<summary><strong>Primary energy factor</strong></summary>

The primary energy factor (PEF) describes how much primary energy is needed to provide one kilowatt hour of district heating. Among other things, it takes account of extracting the energy sources and of transport, conversion and distribution losses. The lower the primary energy factor, the more efficiently the district heating network operates.\
\
Example:

* District heating network A: 0.35 – A low primary energy factor shows that the district heating is generated particularly efficiently. The heat comes predominantly from renewable energy or waste heat, so little primary energy is needed and there are few distribution losses.
* District heating network B: 1.10 – A high primary energy factor means that more primary energy has to be used to provide the district heating. This is often the case with district heating networks with a higher share of fossil fuels or greater energy losses.

</details>