What’s in the data

Every site record is built in three layers. Each layer has its own sources and its own licence. They are kept apart and joined by one thing: the site ID.

The three layers

1. Open map layer (free)

The base of each record comes from OpenStreetMap, the open map built by volunteers. It tells us that a site exists, where it is, what it is called, what kind of site it is and, where a mapper has added it, who operates it. Free shows this layer for every site that has an OpenStreetMap record, and nothing else. This layer is published under the Open Database Licence (ODbL). We credit OpenStreetMap wherever it is shown and send corrections back to it.

2. Enriched layer (Premium)

Everything we add on top: who operates the site (researched, not taken from the map tag), its hazardous-area classification, how many people work there, whether it is still running, a photo, and the source behind each figure. It comes from official registers, company filings, operator websites, annual reports and press, read and checked with a citation kept for each fact. It is a separate dataset, stored apart from the map layer and joined to it only by the site ID. It is licensed commercially with Premium.

3. Derived insights (Premium)

Numbers we calculate from the enriched layer: market counts, TAM results and totals by region or site type. Where a figure is estimated rather than sourced, it is marked as modelled.

Other open sources, such as national registers and emission inventories, carry their own licences and credits. The sources page lists them all.

Where each field comes from

Every field a signed-in user can see, which layer it belongs to, where it comes from and how often it is refreshed. The list comes straight from the app, so it matches what the map shows.

Data dictionary

The same field list as machine-readable JSON: fields.json. It lists each field’s key, label, layer, source type, update cadence and whether Free shows it.

What is not in the data

No named people and no personal contact details. This is a register of sites, not of people.

How good is the data? Licensing All sources and credits