About Wattlas

Wattlas turns open European electricity-market data into a set of explorable views of how — and when — the price of power moves across Europe, centred on Germany (the DE-LU bidding zone) and its neighbours: France, the Netherlands, Belgium, Poland, Austria and the Nordics.

Why it exists

It started as a way to learn the data terrain of European power markets, and grew into a small tool that surfaces a few genuinely interesting things about them — from the daily price rhythm to the way a congested grid is handled three different ways across Germany, the Nordics and Britain.

What it is not

Wattlas is a learning project, not a commercial product. It makes no investment or trading recommendations, and nothing here should be read as financial advice. See the Terms & Disclaimer.

How it's built

Open-data APIs feed a Python pipeline that pre-computes small JSON files; a static frontend reads them directly. No database, no server, no live backend. The full method is on the How it works page.