Sources and licences
Data sources
Our forecasts are built from open data published by weather services, grid operators, public authorities and power exchanges. This page lists who provides it, what we use it for and on which terms.
Licences checked on 28 October 2026.
Weather
MET Norway
Used for: Weather forecasts for most markets
Licence: NLOD 2.0 / CC BY 4.0
Credit: Based on data from MET Norway
ECMWF Open Data
Used for: Weather forecasts for our own weather archive
Licence: CC BY 4.0
Credit: Copyright © 2026 European Centre for Medium-Range Weather Forecasts (ECMWF). Source: www.ecmwf.int. Licence: CC BY 4.0. We turn the forecasts into wind, solar and price estimates. ECMWF does not accept any liability whatsoever for any error or omission in the data, their availability, or for any loss or damage arising from their use.
Deutscher Wetterdienst (via Bright Sky)
Used for: Weather data for Germany
Licence: CC BY 4.0
Credit: Quelle: Deutscher Wetterdienst
GeoSphere Austria
Used for: Weather forecast for Austria
Licence: CC BY 4.0
Credit: Datenquelle: GeoSphere Austria
Český hydrometeorologický ústav (ČHMÚ)
Used for: Weather forecast for Czechia (ALADIN model)
Licence: CC BY 4.0
Credit: Český hydrometeorologický ústav
Electricity market and grid
ENTSO-E Transparency Platform
Used for: Electricity consumption, generation and power plant availability as inputs to our models
Licence: CC BY 4.0
Credit: ENTSO-E Transparency Platform
SMARD (Bundesnetzagentur)
Used for: Exchange prices we pass on for 13 bidding zones, and generation data
Licence: CC BY 4.0
Credit: Bundesnetzagentur | SMARD.de
OMIE
Used for: Exchange prices for Spain and Portugal that we pass on
Licence: OMIE terms of use (unaltered, with source)
Credit: OMIE
Energinet (Energi Data Service)
Used for: Exchange prices for Sweden (SE3) that we pass on
Licence: CC BY 4.0
Credit: Source: Energinet (www.energidataservice.dk)
Fingrid
Used for: Wind, solar and load forecasts for Finland
Licence: CC BY 4.0
Credit: Source Fingrid / data.fingrid.fi, license CC 4.0 BY
NUCS (Nordic Unavailability Collection System)
Used for: Plant and grid unavailability in the Nordic countries
Licence: NUCS terms of use
Credit: NUCS Platform
Norges vassdrags- og energidirektorat (NVE)
Used for: Norwegian hydro reservoir levels
Licence: NLOD
Credit: NVE
Hub'Eau
Used for: River levels and flows in France
Licence: Licence Ouverte 2.0
Credit: Hub'Eau (OFB, BRGM)
Fuels and exchange rates
World Bank
Used for: Coal price
Licence: CC BY 4.0
Credit: World Bank Commodity Price Data (The Pink Sheet)
U.S. Energy Information Administration (via datahub.io)
Used for: Oil and natural gas prices
Licence: Public domain (US federal agency)
Credit: U.S. Energy Information Administration
European Central Bank
Used for: Exchange rates for prices in other currencies
Licence: ECB terms of use
Credit: Source: ECB
Installed capacity and levies
OpenStreetMap
Used for: Wind turbine locations
Licence: ODbL 1.0
Credit: © OpenStreetMap contributors
Marktstammdatenregister (Bundesnetzagentur)
Used for: Solar installations in Germany
Licence: DL-DE-BY-2.0
Credit: Bundesnetzagentur, Marktstammdatenregister
Regjeringen.no / NVE
Used for: Norwegian tax and levy rates
Licence: Official publication
Credit: Regjeringen.no, NVE
Exchange prices we pass on
Besides our forecasts, the app, website, API and integrations show the actual day-ahead prices of the power exchange once the auction on the day before has set them. We only pass these prices on where the source allows it, and only from that one source:
- SMARD (Bundesnetzagentur): Germany/Luxembourg, Austria, Netherlands, Belgium, France, Switzerland, Czechia, Poland, Denmark (DK1, DK2), Norway (NO2), Sweden (SE4) and Northern Italy
- Energinet (Energi Data Service): Sweden (SE3)
- OMIE: Spain and Portugal
For Norway (NO1, NO3, NO4, NO5), Sweden (SE1, SE2), Finland, Romania, Slovakia, Greece, Bulgaria, Great Britain and the Italian zones other than North we have no source whose terms allow passing the prices on. There we show our forecast only.
What we change in these prices: we convert euros per megawatt hour into cents per kilowatt hour, average the four quarter-hour prices of an hour for the hourly view and convert into other currencies with the ECB reference rates. Beyond that we do not alter the values.
Notes
Our models compute price and CO2 forecasts from weather, market and asset data. These forecasts are our own calculations, not original data of the providers.
Listing a provider does not mean that it supports or recommends us, or that it has reviewed our forecasts.
How the CO2 values are calculated is described in the CO2 methodology.