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Go microservice implementing the ISO 13790 annual heating energy demand calculation pipeline, validated against the TABULA European building typology database. Data source: IEE Projects TABULA + EPISCOPE (www.episcope.eu).

ignis is designed as an internal microservice. Given a TABULA building variant code, it returns the annual heating energy demand in kWh/(m²·a) via a simple REST API.

19/20 countries at 100% accuracy: 2,124 / 2,147 buildings within ±2.5% (./bin/validate, 2026-10-02). See the validation report.

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Documentation

Section	Description
Getting started	Installation, configuration, building, running
API reference	All endpoints with request/response examples
Validation	Per-country accuracy results

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Repository

github.com/thd-spatial-ai/ignis · Issue tracker · Contributing