New SNH Visualisation Guidance Published (Lighting)

We were reminded today that the latest version of the SNH “Visual Representation of Wind Farms” came out of draft and was published last month (February 2017).

Version 2.2 of the guidance is an iterative update following the major release update (v2.0) in summer 2014 and the v2.1 revisions in December the same year.

A summary document of changes has been published as a separate download and provides practitioners and interested parties a rapid insight into the changes without the need to compare paragraph by paragraph.  The major change, impacting visual assessment and output for new developments is in paragraphs 174-177:

Turbine Lighting

For turbines in excess of 150m, the need to consult on new lighting visuals is now required.  Although future technical mitigation may help here, there is currently the recommendation to capture images at dusk and create a photomontage based on existing lighting (static streets, moving vehicles, other aviation lighting).
The visualisation should use photographs taken in low light conditions, preferably when other artificial lighting (such as street lights and lights on buildings) are on, to show how the wind farm lighting will look compared to the existing baseline at night.

NOT the Way to Visualise Wind Turbine Lighting!

Specifically the guidance makes reference to innovation in that SNH “encourage applicants to explore new techniques to do this, and emphasise the importance of early dialogue

We are looking for someone who will be creating night light visualisations to ensure that our upcoming night light features being built into VentusAR will work. If you have a project at the right stage, get in touch!

Animation

As we have experienced with the difference between animated wind turbines when compared against static imagery, there is a big difference between views of lighting where all the turbines are at a “maximum visibility” (worst case scenario) visibility and a more normalised situation with different wind directions and rotation occluding lights at certain times.  The more realistic effect can create a fairy lights twinkling effect, but is more representative.

For any clients, landscape assessors, planners or developers interested in exploring new ways to communicate, please contact us at hello@ventusar.com