GET

Project List

API Documentation

Welcome to the Heat Pumps Info API documentation. This API allows users to access the heat pump catalog and associated projects through a RESTful interface.

Data provided by the Portal for Large-Scale Heat Pumps © 2025 by Fraunhofer IEG is licensed under CC BY 4.0

How to Use the API

The API can be accessed using standard HTTP methods. Here are some common actions:

  • GET: Retrieve data from the server (e.g., list of products or projects).
  • OPTIONS: Retrieve allowed methods for a resource.
  • Download Formats: You can specify the format of the data you want to receive, such as JSON or Excel (XLSX).

Available Endpoints

Endpoint Description
/api/products/ Access the list of heat pump products.
/api/projects/ Access the list of projects related to heat pumps.

Example Requests

To download an Excel file of the products, you can use the following URL:

GET /api/products/?format=xlsx

This request will return an Excel file containing the product data.

Response Format

The API responds with data in various formats based on the requested format. For JSON, you may receive a response like:

{
"products": "http://grosswaermepumpen.info/api/products/",
"projects": "http://grosswaermepumpen.info/api/projects/"
}
GET /en-us/api/projects/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "count": 161,
    "next": null,
    "previous": null,
    "results": [
        {
            "id": 1,
            "refrigerants": [],
            "manufacturer": "keine Angabe",
            "operator": "Vattenfall Wärme Berlin AG",
            "name": null,
            "location": "Berlin-Köpenick",
            "country": "DE",
            "state": "BE",
            "other_state": null,
            "latitude": "52.451800",
            "longitude": "13.581900",
            "commissioning_year": null,
            "commissioning_status": "CO",
            "product": null,
            "source_notes": "Wärmequellenmix für Fernwärme",
            "temp_source_min": null,
            "temp_source_max": null,
            "sink": "DH",
            "sink_notes": "",
            "flow_temperature": 80.0,
            "flow_temperature_min": null,
            "flow_temperature_heat_network": 85.0,
            "flow_temperature_heat_network_min": null,
            "return_temperature_heat_network": 53.0,
            "return_temperature_heat_network_min": null,
            "t_hub_max": null,
            "cop_heat_side_min": null,
            "cop_heat_side_max": null,
            "thermal_capacity_kw": 1200.0,
            "thermal_capacity_comment": null,
            "cooling_capacity_kw": null,
            "electrical_capacity_kw": null,
            "operating_hours_per_year": 5,
            "annual_performance_factor": null,
            "heating_output": null,
            "compressor": "SC",
            "filling_quantity": null,
            "length": null,
            "width": null,
            "height": null,
            "weight": null,
            "additional_systems": "2 Gasturbinen, 3 Heißwassererzeuger, 1 BHKW (insges. 50 MWth)",
            "sound_pressure": null,
            "storage": null,
            "url": "https://www.energiewendebauen.de/projekt/neu-grosswaermepumpen-in-deutschen-fernwaermenetzen/",
            "url_archive": null,
            "url_date": "2023-09-17",
            "url2": "https://www.youtube.com/watch?v=Q37ORjeAuDQ",
            "url2_archive": null,
            "url2_date": "2023-09-17",
            "url3": "https://de.linkedin.com/pulse/vom-labor-zur-realit%C3%A4t-berlinerenergieundwaerme-kgcve?trk=public_post_feed-article-content",
            "url3_archive": null,
            "url3_date": "2023-09-17",
            "reference_email": null,
            "reference": "",
            "source": 23
        },
        {
            "id": 2,
            "refrigerants": [
                "R134a"
            ],
            "manufacturer": "Ochsner Energie Technik",
            "operator": "Ikea Deutschland GmbH & Co. KG",
            "name": null,
            "location": "Berlin",
            "country": "DE",
            "state": "BE",
            "other_state": null,
            "latitude": "52.520000",
            "longitude": "13.405000",
            "commissioning_year": 2011,
            "commissioning_status": "OP",
            "product": "IWWS520ER2",
            "source_notes": "Abwasser Druckleitung, welche an das kommunale Abwassernetz angeschlossen ist.",
            "temp_source_min": 10.0,
            "temp_source_max": null,
            "sink": "HSB",
            "sink_notes": "Beheizung Möbelhaus",
            "flow_temperature": 40.0,
            "flow_temperature_min": null,
            "flow_temperature_heat_network": null,
            "flow_temperature_heat_network_min": null,
            "return_temperature_heat_network": null,
            "return_temperature_heat_network_min": null,
            "t_hub_max": null,
            "cop_heat_side_min": null,
            "cop_heat_side_max": null,
            "thermal_capacity_kw": 1500.0,
            "thermal_capacity_comment": "3 x 500 kW",
            "cooling_capacity_kw": null,
            "electrical_capacity_kw": null,
            "operating_hours_per_year": null,
            "annual_performance_factor": null,
            "heating_output": null,
            "compressor": "SC",
            "filling_quantity": null,
            "length": null,
            "width": null,
            "height": null,
            "weight": null,
            "additional_systems": null,
            "sound_pressure": null,
            "storage": null,
            "url": "https://ochsner-energietechnik.com/portfolio-item/ikea-berlin-lichtenberg/",
            "url_archive": null,
            "url_date": "2025-02-05",
            "url2": null,
            "url2_archive": null,
            "url2_date": null,
            "url3": null,
            "url3_archive": null,
            "url3_date": null,
            "reference_email": null,
            "reference": "",
            "source": 29
        },
        {
            "id": 3,
            "refrigerants": [
                "HFKW"
            ],
            "manufacturer": "Siemens Energy",
            "operator": "BEW Berliner Energie und Wärme",
            "name": null,
            "location": "Berlin Potsdamer Platz",
            "country": "DE",
            "state": "BE",
            "other_state": null,
            "latitude": "52.509600",
            "longitude": "13.376600",
            "commissioning_year": 2022,
            "commissioning_status": "OP",
            "product": null,
            "source_notes": "",
            "temp_source_min": 32.0,
            "temp_source_max": null,
            "sink": "DH",
            "sink_notes": "",
            "flow_temperature": 120.0,
            "flow_temperature_min": 85.0,
            "flow_temperature_heat_network": null,
            "flow_temperature_heat_network_min": null,
            "return_temperature_heat_network": null,
            "return_temperature_heat_network_min": null,
            "t_hub_max": null,
            "cop_heat_side_min": null,
            "cop_heat_side_max": 3.0,
            "thermal_capacity_kw": 8000.0,
            "thermal_capacity_comment": null,
            "cooling_capacity_kw": null,
            "electrical_capacity_kw": null,
            "operating_hours_per_year": null,
            "annual_performance_factor": null,
            "heating_output": null,
            "compressor": "TC",
            "filling_quantity": null,
            "length": null,
            "width": null,
            "height": null,
            "weight": null,
            "additional_systems": null,
            "sound_pressure": null,
            "storage": null,
            "url": "https://www.siemens-energy.com/de/de/home/stories/das-maximum-aus-abwaerme-herausholen.html#:~:text=Noch%20vor%20Ende%202022%20wird,Weg%20zur%20Dekarbonisierung%20der%20W%C3%A4rmeerzeugung.",
            "url_archive": null,
            "url_date": "2025-02-05",
            "url2": null,
            "url2_archive": null,
            "url2_date": null,
            "url3": "https://www.energate-messenger.de/news/223648/neue-hochtemperatur-waermepumpe-fuer-berlin#:~:text=Berlin%20(energate)%20%2D%20Der%20Energiekonzern,kWh%20W%C3%A4rme%20im%20Jahr%20produzieren",
            "url3_archive": null,
            "url3_date": "2025-02-05",
            "reference_email": null,
            "reference": "E-Mail Korrespondenz  zwischen Fraunhofer IEG und Vattenfall (21.12.2022 & 19.12.2022)",
            "source": 34
        },
        {
            "id": 4,
            "refrigerants": [],
            "manufacturer": "keine Angabe",
            "operator": "Eon Energy Solutions GmbH",
            "name": "iKWK mit Luftwärmepumpe",
            "location": "Ibbenbüren",
            "country": "DE",
            "state": "NW",
            "other_state": null,
            "latitude": "52.276600",
            "longitude": "7.714700",
            "commissioning_year": 2024,
            "commissioning_status": "CO",
            "product": null,
            "source_notes": "",
            "temp_source_min": null,
            "temp_source_max": null,
            "sink": "DH",
            "sink_notes": "",
            "flow_temperature": null,
            "flow_temperature_min": null,
            "flow_temperature_heat_network": null,
            "flow_temperature_heat_network_min": null,
            "return_temperature_heat_network": null,
            "return_temperature_heat_network_min": null,
            "t_hub_max": null,
            "cop_heat_side_min": null,
            "cop_heat_side_max": null,
            "thermal_capacity_kw": 800.0,
            "thermal_capacity_comment": null,
            "cooling_capacity_kw": null,
            "electrical_capacity_kw": null,
            "operating_hours_per_year": null,
            "annual_performance_factor": null,
            "heating_output": 3600000.0,
            "compressor": "NI",
            "filling_quantity": null,
            "length": null,
            "width": null,
            "height": null,
            "weight": null,
            "additional_systems": "Power-to-Heat-Anlage (0,6 MWth), Erdgas-BHKW (2 MWth)",
            "sound_pressure": null,
            "storage": "2 x 150 m³",
            "url": "https://www.energate-messenger.de/news/220415/ibbenbueren-luftwaermepumpe-halbiert-den-primaerenergiefaktor",
            "url_archive": null,
            "url_date": "2025-02-05",
            "url2": "https://www.kreis-steinfurt.de/kv_steinfurt/Aktuelles/Amtsblatt/2023/Amtsblatt%2001-2023.pdf",
            "url2_archive": null,
            "url2_date": "2025-02-05",
            "url3": null,
            "url3_archive": null,
            "url3_date": null,
            "reference_email": null,
            "reference": "",
            "source": 32
        },
        {
            "id": 5,
            "refrigerants": [
                "Unbekannt"
            ],
            "manufacturer": "Johnson Controls",
            "operator": "BEW Berliner Energie und Wärme",
            "name": null,
            "location": "Berlin Buch",
            "country": "DE",
            "state": "BE",
            "other_state": null,
            "latitude": "52.636700",
            "longitude": "13.486900",
            "commissioning_year": 2021,
            "commissioning_status": "OP",
            "product": "Johnson Controls HeatPAC 104 S",
            "source_notes": "Abdampf KWK-Anlage",
            "temp_source_min": 40.0,
            "temp_source_max": null,
            "sink": "DH",
            "sink_notes": "",
            "flow_temperature": 65.0,
            "flow_temperature_min": null,
            "flow_temperature_heat_network": 135.0,
            "flow_temperature_heat_network_min": 80.0,
            "return_temperature_heat_network": null,
            "return_temperature_heat_network_min": null,
            "t_hub_max": null,
            "cop_heat_side_min": null,
            "cop_heat_side_max": 6.4,
            "thermal_capacity_kw": 700.0,
            "thermal_capacity_comment": null,
            "cooling_capacity_kw": null,
            "electrical_capacity_kw": null,
            "operating_hours_per_year": null,
            "annual_performance_factor": null,
            "heating_output": null,
            "compressor": "NI",
            "filling_quantity": null,
            "length": null,
            "width": null,
            "height": null,
            "weight": null,
            "additional_systems": "GuD-Anlage, Power-to-Heat-Anlage",
            "sound_pressure": null,
            "storage": null,
            "url": "https://group.vattenfall.com/de/newsroom/news/2022/neue-waermepumpe-stadtwaerme-berlin",
            "url_archive": null,
            "url_date": "2025-02-05",
            "url2": null,
            "url2_archive": null,
            "url2_date": null,
            "url3": null,
            "url3_archive": null,
            "url3_date": null,
            "reference_email": null,
            "reference": "",
            "source": 33
        },
        {
            "id": 6,
            "refrigerants": [],
            "manufacturer": "Combitherm GmbH",
            "operator": "Stadtwerke Tübingen",
            "name": null,
            "location": "Dettenhausen",
            "country": "DE",
            "state": "BW",
            "other_state": null,
            "latitude": "48.624600",
            "longitude": "9.111700",
            "commissioning_year": 2021,
            "commissioning_status": "OP",
            "product": null,
            "source_notes": "Abwärmenutzung BHKW",
            "temp_source_min": null,
            "temp_source_max": null,
            "sink": "DH",
            "sink_notes": "",
            "flow_temperature": null,
            "flow_temperature_min": null,
            "flow_temperature_heat_network": null,
            "flow_temperature_heat_network_min": null,
            "return_temperature_heat_network": null,
            "return_temperature_heat_network_min": null,
            "t_hub_max": null,
            "cop_heat_side_min": null,
            "cop_heat_side_max": null,
            "thermal_capacity_kw": null,
            "thermal_capacity_comment": null,
            "cooling_capacity_kw": null,
            "electrical_capacity_kw": null,
            "operating_hours_per_year": null,
            "annual_performance_factor": null,
            "heating_output": null,
            "compressor": "NI",
            "filling_quantity": null,
            "length": null,
            "width": null,
            "height": null,
            "weight": null,
            "additional_systems": "BHKW, Spitzenlastkessel, Solarthermieanlage",
            "sound_pressure": null,
            "storage": null,
            "url": "https://www.energie-experten.org/projekte/dettenhausener-waermenetz-waermepumpe-nutzt-bhkw-abwaerme",
            "url_archive": null,
            "url_date": "2025-02-05",
            "url2": "https://www.bkwk.de/wp-content/uploads/2023/10/BHKW.des_.Monats-Juni.Effizient.nachhaltig.oekologisch.pdf",
            "url2_archive": null,
            "url2_date": "2025-06-06",
            "url3": null,
            "url3_archive": null,
            "url3_date": null,
            "reference_email": null,
            "reference": "",
            "source": 33
        },
        {
            "id": 7,
            "refrigerants": [],
            "manufacturer": "keine Angabe",
            "operator": "Stadtwerke Duisburg AG",
            "name": null,
            "location": "Duisburg-Huckingen",
            "country": "DE",
            "state": "NW",
            "other_state": null,
            "latitude": "51.353600",
            "longitude": "6.709700",
            "commissioning_year": 2025,
            "commissioning_status": "OP",
            "product": null,
            "source_notes": "Reinwasser Kläranlage, Volumenstrom stark schwankend, bis zu 520 m³/h",
            "temp_source_min": 10.0,
            "temp_source_max": 25.0,
            "sink": "DH",
            "sink_notes": "",
            "flow_temperature": 85.0,
            "flow_temperature_min": 75.0,
            "flow_temperature_heat_network": 130.0,
            "flow_temperature_heat_network_min": 75.0,
            "return_temperature_heat_network": null,
            "return_temperature_heat_network_min": null,
            "t_hub_max": null,
            "cop_heat_side_min": 2.5,
            "cop_heat_side_max": 3.3,
            "thermal_capacity_kw": 3800.0,
            "thermal_capacity_comment": null,
            "cooling_capacity_kw": null,
            "electrical_capacity_kw": null,
            "operating_hours_per_year": null,
            "annual_performance_factor": null,
            "heating_output": null,
            "compressor": "NI",
            "filling_quantity": null,
            "length": null,
            "width": null,
            "height": null,
            "weight": null,
            "additional_systems": "Gasmotor (2 x 4,5 Mwel), Elektrokessel (30 MWth) an anderem Standort",
            "sound_pressure": null,
            "storage": "nein",
            "url": "https://www.energie.de/euroheatpower/news-detailansicht/nsctrl/detail/News/stadtwerke-duisburg-errichten-groesste-ikwk-anlage-deutschlands-an-einer-klaeranlage",
            "url_archive": null,
            "url_date": "2023-09-23",
            "url2": "https://www.youtube.com/watch?v=0HtHmZuSakQ",
            "url2_archive": null,
            "url2_date": "2023-09-23",
            "url3": "https://www.stadtwerke-duisburg.de/presse/medieninformationen/newsdetail/innovative-kwk-anlage-erreicht-naechsten-meilenstein-waermepumpen-eingetroffen",
            "url3_archive": null,
            "url3_date": "2023-09-23",
            "reference_email": null,
            "reference": "Weißbach, M.; Tiepelmann, S. (2025) Innovative KWK-Anlage mit einer Abwasser-Wärmepumpe in Duisburg Huckingen. AbwasserwärmeTag Essen 05.11.2025",
            "source": 29
        },
        {
            "id": 8,
            "refrigerants": [],
            "manufacturer": "Johnson Controls",
            "operator": "Stadtwerke Flensburg",
            "name": null,
            "location": "Flensburg",
            "country": "DE",
            "state": "SH",
            "other_state": null,
            "latitude": "54.793700",
            "longitude": "9.446700",
            "commissioning_year": 2027,
            "commissioning_status": "PL",
            "product": null,
            "source_notes": "Meereswasser, 3.000 Liter pro Sekunde",
            "temp_source_min": null,
            "temp_source_max": null,
            "sink": "DH",
            "sink_notes": "",
            "flow_temperature": 85.0,
            "flow_temperature_min": 60.0,
            "flow_temperature_heat_network": null,
            "flow_temperature_heat_network_min": null,
            "return_temperature_heat_network": null,
            "return_temperature_heat_network_min": null,
            "t_hub_max": null,
            "cop_heat_side_min": null,
            "cop_heat_side_max": null,
            "thermal_capacity_kw": 60000.0,
            "thermal_capacity_comment": "Drei Wärmepumpenmodule mit einer Gesamtleitung von 60 MW",
            "cooling_capacity_kw": null,
            "electrical_capacity_kw": 21000.0,
            "operating_hours_per_year": null,
            "annual_performance_factor": null,
            "heating_output": null,
            "compressor": "SC",
            "filling_quantity": null,
            "length": 13000.0,
            "width": 8000.0,
            "height": 11000.0,
            "weight": null,
            "additional_systems": null,
            "sound_pressure": null,
            "storage": null,
            "url": "https://www.zfk.de/energie/waerme/stadtwerke-flensburg-bauen-gwp-bis-2025-klimaneutralitaet-grosswaermepumpe",
            "url_archive": null,
            "url_date": null,
            "url2": "https://www.stadtwerke-flensburg.de/unternehmen/nachhaltigkeit/transformationsplan/vier-phasen-zur-klimaneutralitaet-2034",
            "url2_archive": null,
            "url2_date": "2025-01-22",
            "url3": null,
            "url3_archive": null,
            "url3_date": null,
            "reference_email": null,
            "reference": "",
            "source": 38
        },
        {
            "id": 9,
            "refrigerants": [
                "R717 (Ammoniak)"
            ],
            "manufacturer": "Johnson Controls",
            "operator": "Kreiskrankenhaus Freiberg",
            "name": null,
            "location": "Freiberg",
            "country": "DE",
            "state": "SN",
            "other_state": null,
            "latitude": "50.922800",
            "longitude": "13.342500",
            "commissioning_year": 2014,
            "commissioning_status": "OP",
            "product": null,
            "source_notes": "",
            "temp_source_min": null,
            "temp_source_max": 14.0,
            "sink": "HSB",
            "sink_notes": "Wärmeversorgung Krankenhaus",
            "flow_temperature": 70.0,
            "flow_temperature_min": null,
            "flow_temperature_heat_network": null,
            "flow_temperature_heat_network_min": null,
            "return_temperature_heat_network": null,
            "return_temperature_heat_network_min": null,
            "t_hub_max": null,
            "cop_heat_side_min": null,
            "cop_heat_side_max": null,
            "thermal_capacity_kw": 860.0,
            "thermal_capacity_comment": null,
            "cooling_capacity_kw": null,
            "electrical_capacity_kw": 215.0,
            "operating_hours_per_year": null,
            "annual_performance_factor": null,
            "heating_output": null,
            "compressor": "SC",
            "filling_quantity": 55.0,
            "length": null,
            "width": null,
            "height": null,
            "weight": null,
            "additional_systems": "Blockheizkraftwerk",
            "sound_pressure": null,
            "storage": null,
            "url": "https://www.kkh-freiberg.com/ueber-uns/gute-gruende-fuer-uns/energetische-optimierung/",
            "url_archive": null,
            "url_date": "2025-02-05",
            "url2": null,
            "url2_archive": null,
            "url2_date": null,
            "url3": null,
            "url3_archive": null,
            "url3_date": null,
            "reference_email": null,
            "reference": "",
            "source": 35
        },
        {
            "id": 10,
            "refrigerants": [],
            "manufacturer": null,
            "operator": "Uniper Wärme GmbH",
            "name": null,
            "location": "Herne",
            "country": "DE",
            "state": "NW",
            "other_state": null,
            "latitude": "51.538800",
            "longitude": "7.219400",
            "commissioning_year": 2024,
            "commissioning_status": "OP",
            "product": null,
            "source_notes": "Abwärme aus Isophoron-Produktion von Evonik",
            "temp_source_min": null,
            "temp_source_max": null,
            "sink": "DH",
            "sink_notes": "",
            "flow_temperature": 100.0,
            "flow_temperature_min": null,
            "flow_temperature_heat_network": null,
            "flow_temperature_heat_network_min": null,
            "return_temperature_heat_network": null,
            "return_temperature_heat_network_min": null,
            "t_hub_max": null,
            "cop_heat_side_min": null,
            "cop_heat_side_max": null,
            "thermal_capacity_kw": 1500.0,
            "thermal_capacity_comment": null,
            "cooling_capacity_kw": null,
            "electrical_capacity_kw": null,
            "operating_hours_per_year": null,
            "annual_performance_factor": null,
            "heating_output": null,
            "compressor": "NI",
            "filling_quantity": null,
            "length": null,
            "width": null,
            "height": null,
            "weight": null,
            "additional_systems": null,
            "sound_pressure": null,
            "storage": null,
            "url": "https://www.uniper.energy/news/de/nachhaltiges-projekt-zur-fernwaerme-gewinnung-fuer-das-ruhrgebiet-startet-am-evonik-standort-herne",
            "url_archive": null,
            "url_date": "2025-02-05",
            "url2": "https://www.chemietechnik.de/energie-utilities/evonik-und-uniper-starten-fernwaermeprojekt-im-ruhrgebiet-994.html",
            "url2_archive": null,
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            "longitude": "9.148008",
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