Home/Data sources and licences

Where the numbers come from

Data sources and licences

Every figure carries its source. The primary upstream data providers are below; attribution is required by several of them and is retained throughout the site.

  • ENTSO-E Transparency Platform — prices, generation, load and cross-border flows for every zone, including the Nordic zones and the Iberian-blackout window.
  • netztransparenz.de — the German grid operators' redispatch and curtailment data.
  • Marktstammdatenregister (MaStR) — Germany's register of power plants and storage, per installation, added up to district (Landkreis) level.
  • Bundesnetzagentur Ladesäulenregister — the public charge-point register of Germany's grid regulator (CC BY 4.0): every operating public charge point with its power, operator and location.
  • SMARD — the Bundesnetzagentur's data portal: generation and load per grid control area (the region one grid operator balances), for the north–south balance.
  • ODRÉ (RTE éCO2mix) — regional and national generation and consumption from RTE, France's grid operator.
  • NESO — Great Britain's grid operator: its regional carbon-intensity data and its constraint-cost breakdown.
  • Eurostat — household and industrial electricity price components, by country; electric-vehicle registrations and vehicles on the road, by vehicle type and powertrain, for Germany and the EU27; the complete energy balances (nrg_bal_c) for electricity's share of final energy, by country.
  • Kraftfahrt-Bundesamt (KBA) — Germany's vehicle authority: monthly new registrations by vehicle type and powertrain (FZ 28), under Datenlizenz Deutschland – Namensnennung 2.0.
  • Region boundaries — simplified map outlines of the EU statistical regions (NUTS) from Eurostat GISCO (© EuroGeographics), and of Britain's distribution-network areas from NESO.
  • EAFO, Umweltbundesamt, Agora Verkehrswende, ADAC, the Bundeskartellamt and Fastned — The Charge, the electric-vehicle section; each figure names its source.
  • CSO Ireland, IEA, LBNL, Ember, EIA, Epoch AI, ML.ENERGY — The Load, the data-centre section; each view's method and sources notes give every figure's source, licence and last fetch.
  • MITECO, Folketinget, the Danish Ministry of Climate, Energy and Utilities, the Scottish Government, the Scottish Parliament, the Commission for Regulation of Utilities, the Bundestag, the Staatsblad and EUR-Lex — the official texts behind the data-centre rules tracker, one linked from each row and re-read every month

Curated figures, updated by hand

A few figures are assembled by hand from published studies and kept as fixed tables with a range and a citation: the France cost stack and the storage-capacity series. They are labelled as estimates and take no side. The marginal-fuel view takes its gas price from a World Bank feed, converted with the European Central Bank's monthly exchange rate; only its carbon price is curated. Full per-figure sourcing is in docs/SOURCES.md.

Using the data

The pre-computed JSON under /data/ is public and readable from anywhere. Wattlas's own derived aggregates are licensed CC BY 4.0: use them, change them, sell what you build, and say where they came from. Credit Wattlas — wattlas.net, and credit the upstream source of whatever you took, since several providers require it in their own right. The electric-vehicle figures are in /data/ev_vehicles.json, each value carrying its status (measured or estimate), its source and retrieval date, and whether Wattlas calculated it.

What the licence does not cover

A few artefacts embed upstream material Wattlas does not own and cannot sub-license, so no reuse rights are granted for them: the France cost stack, the French reactor-fleet list, the capacity-adequacy figures, and the electric-mobility tables that quote third-party material (Europe comparison, charging prices, charging demand, the roadmap). Each names its own source; go there for terms. The full text, with the reasons, is in LICENSE-DATA.

A figure travels with its caveat

Several figures are labelled upper bounds, models or estimates. The arbitrage and flexibility figures assume perfect foresight and zero losses, so real revenue is lower; marginal fuel is a model that infers what nobody observes directly; the curtailment cost is an estimate at a reference price. Those labels are part of the data. Reproducing a figure without its caveat misrepresents it.

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