Once a wind farm is in operation the site is monitored remotely. Maintenance staff visit the wind farm on a quarterly basis for routine works. The control systems in the turbines are fail-safe, so if a fault does occur the turbines stop automatically and communicate with the operating company via a telephone line.
The wind farm is expected to have an operational life of 20-25 years. After this time, the development can either be refurbished to continue generation or decommissioned in order to return the site to its previous state.