Filterable REST API over Germany's Marktstammdatenregister (MaStR) energy units — solar, wind, biomass, storage and more. Official open data ships as multi-GB XML ZIPs; this API makes a normalized snapshot queryable JSON.
GET /v1/units?land=BY&type=solar&min_kw=10&limit=10
GET /v1/units?plz=48147&status=In%20Betrieb
GET /v1/units/{mastr_id}
GET /v1/stats
GET /v1/health
Try it: solar units · NW ≥100 kW · stats · OpenAPI spec
Source: © Bundesnetzagentur – Marktstammdatenregister (MaStR). License: Datenlizenz Deutschland – Namensnennung – Version 2.0 (DL-DE-BY-2.0). Independent project, not an official service. Preview build with a limited snapshot.