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

# unknown

The unknown duration of energy or runtime data.

## Declaration

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

## See Also

### Getting the peak energy data

- [criticalPeak](energykit/electricityinsightrecord/tariffpeak/criticalpeak.md)
- [offPeak](energykit/electricityinsightrecord/tariffpeak/offpeak.md)
- [onPeak](energykit/electricityinsightrecord/tariffpeak/onpeak.md)
- [partialPeak](energykit/electricityinsightrecord/tariffpeak/partialpeak.md)
- [superOffPeak](energykit/electricityinsightrecord/tariffpeak/superoffpeak.md)