# Data Dictionary - European Negative Price Hours - event table, cleaned Parquet

**Units:** all `price_eur_mwh` values are in **EUR/MWh**.  Times are UTC.

| column | type | description |
|---|---|---|
| `zone` | str | Bidding zone |
| `ts` | timestamp (UTC) | Interval |
| `price_eur_mwh` | float | Negative day-ahead price, EUR/MWh |
| `unit` | str | Unit |
| `res_min` | int | Native resolution (15/30/60) |

*Source: ENTSO-E Transparency Platform (derived).*