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

 

 

 

🔹 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