---
title: unknown
framework: energykit
role: symbol
role_heading: Instance Property
path: energykit/electricityinsightrecord/gridcleanliness/unknown
---

# unknown

A category of electricity usage when grid cleanliness information is unavailable.

## Declaration

```swift
var unknown: Measure?
```

## See Also

### Getting grid cleanliness information

- [cleaner](energykit/electricityinsightrecord/gridcleanliness/cleaner.md)
- [lessClean](energykit/electricityinsightrecord/gridcleanliness/lessclean.md)
- [avoid](energykit/electricityinsightrecord/gridcleanliness/avoid.md)