# Data Dictionary - US Load Forecast Error - actual minus day-ahead forecast, cleaned Parquet

**Units:** all `load_error_mwh` values are in **MWh**.  Times are UTC.

| column | type | description |
|---|---|---|
| `zone` | str | EIA region |
| `ts` | timestamp (UTC) | Hour |
| `load_error_mwh` | float | Actual - forecast demand, MWh |
| `unit` | str | Unit |
| `res_min` | int | Native resolution (hourly) |

*Source: U.S. Energy Information Administration (EIA).*