---
title: What are cut-in and cut-out wind speeds ?
description: "  These thresholds define the turbine's operational window: Below cut-in: no production Between cut-in and rated speed: increasing production Above cut-out: turbine stops to protect itself"
---

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2. [Key concepts](https://dashboard-kb.wpo.eu/knowledge-base/key-concepts?hsLang=en)
3. [Wind](https://dashboard-kb.wpo.eu/knowledge-base/key-concepts?hsLang=en#wind)

# What are cut-in and cut-out wind speeds ?

### 🔹 Definition

- **Cut-in wind speed**: the minimum wind speed at which a turbine starts producing electricity.
- **Rated wind speed:** the wind speed at which the turbine reaches its maximum (nominal) power output. Beyond this point, power output plateaus.
- **Cut-out wind speed**: the maximum wind speed at which the turbine shuts down to avoid structural damage due to excessive wind force.

### 🔹 Typical Values

 

| Term | Description | Average Value |
| --- | --- | --- |
| Cut-in | Production starts | ~3 to 4 m/s |
| Rated | Max power output is reached | ~11 to 13 m/s |
| Cut-out | Safety stop (auto shutdown) | ~20 to 25 m/s |

 

 ![Wind Turbine Power Vs Speed Curve](https://tse2.mm.bing.net/th?id=OIP.pDBCEC9BJTpPFyQVW7pNEwHaFr&pid=Api)

 

🔹 Why it matters

These thresholds define the turbine's operational window:

- Below cut-in: no production
- Between cut-in and rated speed: increasing production
- Above cut-out: turbine stops to protect itself

### 🔹 In Dashboard

- SCADA alarms may be triggered during high wind shutdowns
- These speeds are defined in the **Power Curves** app

![](https://dashboard-kb.wpo.eu/hs-fs/hubfs/image-png-May-12-2025-10-15-11-5934-AM.png?width=1912&height=760&name=image-png-May-12-2025-10-15-11-5934-AM.png)

- [Key concepts](https://dashboard-kb.wpo.eu/knowledge-base/key-concepts?hsLang=en#main-content)

    - [Wind](https://dashboard-kb.wpo.eu/knowledge-base/key-concepts?hsLang=en#wind)
    - [Solar](https://dashboard-kb.wpo.eu/knowledge-base/key-concepts?hsLang=en#solar)

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