# Factor

#### The Factor object:

| **id**  `string`                   | Unique identifier for the object                                                                                                   |
| ---------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------- |
| **rate**  `float`                  | Emission rate, in units $${unit}/kgCO\_2e$$                                                                                        |
| **unit**  `string`                 | Physical or financial unit by which to scale emissions, given as $$\[unit]/kgCO\_2e$$                                              |
| **basis**  `'SPEND' \| 'ACTIVITY'` | `'SPEND'` for **Spend-Based Methodology** and financial units. `'ACTIVITY'` for **Activity-Based Methodology** and physical units. |
| **name**  `string`                 | The name of the emission factor                                                                                                    |
| **code**  `string`                 | Lookup-key for **Emission Factor Database**                                                                                        |
| **sector** `string`                | Sector in **Emission Factor Database**                                                                                             |
| **category**  `string`             | Category in **Emission Factor Database**                                                                                           |
| **releaseYear**  `int`             | Year in which factor was released                                                                                                  |
| **version**  `int`                 | Factor version                                                                                                                     |
| **source** `string`                | Data provider of factor                                                                                                            |

```typescript
// Example:
{
  id: "fct_12345678",
  rate: 12,
  unit: "usd",
  basis: "SPEND",
  name: "Mid-sized Freight Ship",
  code: "MID_FREIGHT",
  sector: "transport",
  category: "transport freight by ship",
  releaseYear: 2023,
  version: 0,
  source: 'EXIOBASE',
}
```