concept

CH column metadata: esios.archives_i90.company_group

Canonical corporate brand (Iberdrola, Endesa, Naturgy, Repsol, Shell, TotalEnergies, Axpo, …). Curated taxonomy at `company_groups_taxonomy.yml`. NULL for SMs out of the curated set; falls back to trim(company_name) or sm_code under the multi-tier resolution in `migrate_apply_company_groups.py`.

# `esios.archives_i90.company_group` Canonical corporate brand (Iberdrola, Endesa, Naturgy, Repsol, Shell, TotalEnergies, Axpo, …). Curated taxonomy at `company_groups_taxonomy.yml`. NULL for SMs out of the curated set; falls back to trim(company_name) or sm_code under the multi-tier resolution in `migrate_apply_company_groups.py`. - **category**: dimension - **common_pitfalls**: - Coverage ~95% of curtailment volume but lower (~50-60%) on PHF*/PDBF where representantes/comercializadores dominate