Gegevensbronnen
This is the authoritative list of every data source with version, reference date, period and licence. All other pages link here — which source produced a given figure is additionally stated on the result itself.
PVGIS — Photovoltaic Geographical Information System (EU JRC)
- Version:
- PVGIS 5.3, radiation database PVGIS-SARAH3
- Reference date:
- 2024
- Period:
- 2005–2023
Used for: Annual solar yield · In-plane irradiation · Loss components (AOI, spectrum, temperature) · Monthly profile
Solar yield data: PVGIS © European Union, 2001–2024. Huld T., Müller R., Gambardella A. (2012), Solar Energy 86, 1803–1815.
New European Wind Atlas (NEWA)
- Version:
- Mesoscale Atlas v1
- Reference date:
- 2019 (release), model years 2005–2018
- Period:
- 2005–2018
- Licence:
- CC BY 4.0
Used for: Mean wind speed · Power density
Wind data: New European Wind Atlas, © NEWA consortium (DTU and others), licensed under CC BY 4.0.
NASA POWER (Climatology)
- Version:
- POWER Release 9
- Reference date:
- 2024
- Period:
- 1984–2023 climatology
Used for: Mean wind speed outside NEWA coverage (fallback)
Wind data outside NEWA coverage: NASA Langley Research Center (LaRC) POWER Project, funded through the NASA Earth Science/Applied Science Program.
Eurostat — Electricity prices for household consumers
- Version:
- nrg_pc_204, consumption band DC (2,500–4,999 kWh/a)
- Reference date:
- Second half of 2025
- Period:
- Half-yearly
Used for: Electricity price baseline per country
Electricity prices: Eurostat, dataset nrg_pc_204.
Eurostat — Heating and cooling degree days
- Version:
- nrg_chdd_a
- Reference date:
- 2024
- Period:
- Annual since 1979
- Licence:
- Eurostat re-use policy
Used for: Heat demand and heat pump SCOP
Heating degree days: Eurostat, dataset nrg_chdd_a.
ENTSO-E Transparency Platform
- Reference date:
- continuous
- Period:
- Hourly day-ahead prices
Used for: Spot price scenarios · Cannibalisation effects
Spot prices: ENTSO-E Transparency Platform.
Umweltbundesamt / EEA — Emission factor of the grid mix
- Reference date:
- Germany 2024 (provisional), other countries EEA 2023
- Licence:
- Free use with attribution
Used for: CO₂ savings (annual average factor, not a displacement factor)
CO₂ factors: Umweltbundesamt (DE) and European Environment Agency (EU).
OpenStreetMap / Nominatim
- Reference date:
- continuous
Used for: Address search · Map display
© OpenStreetMap contributors
Open-Meteo
- Reference date:
- continuous
Used for: Hourly irradiation for the self-consumption simulation
Weather data: Open-Meteo.com, CC BY 4.0.
Copernicus Atmosphere Monitoring Service (CAMS) Radiation
- Reference date:
- continuous
Used for: Irradiation reference values
Contains modified Copernicus Atmosphere Monitoring Service data; neither the European Commission nor ECMWF is responsible for any use of it.
European Geological Data Infrastructure (EGDI)
- Reference date:
- 2023
- Licence:
- CC BY 4.0
Used for: Geothermal potential for brine heat pumps
Geothermal data: EGDI, CC BY 4.0.
JRC Catchment Characterisation and Modelling (CCM2)
- Reference date:
- 2007
Used for: Water availability for water-source heat pumps
Water body data: © European Union, JRC CCM2.
JRC ENSPRESO — Energy Potentials
- Version:
- 2024
- Reference date:
- 2024
- Licence:
- CC BY 4.0
Used for: Regional solar and wind potential in the portfolio screening
Potential data: JRC ENSPRESO, CC BY 4.0.
EHPA — Heat pump characteristics
- Reference date:
- 2024
- Licence:
- Manufacturer data and EHPA publications; the raw datasets may not be redistributed
Used for: COP curves of the reference units
Heat pump characteristics from manufacturer data sheets and EHPA publications.
The boxed texts are the attributions required by the respective licences and are reproduced verbatim. If a source fails or changes its terms, we replace it with an equivalent one and state the changed reference date in the report.