# StartEnergyUsageTracking()

> Starts energy-usage tracking, or resets the baseline if tracking is already active so that subsequent PerformanceMetrics.EnergyUsage readings are measured from now.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine.AdaptivePerformance](/engine/6000.7/script-reference/unityengine/adaptiveperformance.md)
* **Assembly:** UnityEngine.AdaptivePerformanceModule

```csharp
bool StartEnergyUsageTracking()
```

### Returns

| Type                                                          | Description                                                                                                                                  |
| ------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | True if tracking was started or reset; false if energy-usage tracking is not supported on this device or Adaptive Performance is not active. |

### Remarks

A `false` result has two causes: energy-usage tracking is not supported on this device, or Adaptive Performance is not currently active. In the latter case tracking can succeed once Adaptive Performance becomes active, so check [IAdaptivePerformance.Active](/engine/6000.7/script-reference/unityengine/adaptiveperformance/iadaptiveperformance/active.md) before giving up.