# Extracted Subsets

> Auto-generated on 2026-03-29 12:15 UTC

| File | Source | Filter | Description |
|------|--------|--------|-------------|
| `transmission_lines.parquet` | ways | `power_value IN ('line', 'cable', 'minor_line')` | Transmission line ways (power=line, cable, minor_line) |
| `substations.parquet` | nodes | `power_value = 'substation'` | Substation nodes (power=substation) |
| `generators.parquet` | nodes | `power_value IN ('generator', 'plant')` | Generator/plant nodes (power=generator, power=plant) |
| `transformers.parquet` | nodes | `power_value = 'transformer'` | Transformer nodes (power=transformer) |