X

In order to provide complete functionality, this website stores browser cookies. If you don’t allow cookies, you may not be able to use certain features of the website. For example, you may not be able to use certain features relating to log-in or order certain services. In addition, you may not be able to see personalised content or switch between languages. We recommend that you allow cookies. If you continue to use our website, we will assume that you are ok with us using cookies. If you want to reject cookies, or find out more about them, click here.

Generation application / commissioning forms

Links to standard generator application, commissioning confirmation and de-commissioning forms are provided below:

Application forms

Commissioning confirmation forms

Decommissioning forms

Separation between wind turbines and overhead lines

Although connection requests for wind turbines/ farms are treated individually, the Energy Networks Association (ENA) have produced some “best practice” guidelines when locating them in the vicinity of overhead lines. 

Engineering Recommendation L44 highlights two criteria when considering the location of wind turbines:

  • The turbine should be located sufficiently distant to avoid toppling onto an overhead line;
  • The turbine should be located sufficiently distant from an overhead line to avoid damage caused by wind wake effects.

In order to prevent any potential damage to an overhead line, the above criteria can be met by ensuring the minimum horizontal distance between the turbine and overhead conductors is the greater of the following:

  • The tip height of the turbine + 10%;
  • The tip height of the turbine + the electrical safety distance applicable to the voltage:

System Voltage (kV)

≤33

66

132

275

400

Falling towards line with conductor hanging vertically

1.7m

1.9m

2.3m

3.3m

4.0m

  • Turbine rotor diameters x 3.

Any projects where turbines encroach on one or all of these distances should be drawn to the attention of the local WPD District Office at the earliest opportunity to resolve any potential issues at development stage.

For further information, please go to the ENA website.

Contact us

Emergency information

0800 6783 105

General contact enquiries

0800 096 3080