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Impact of Wind Turbines
Photographic Modelling: Scottish Site
Quantitative Modelling Methods for VIA
Photographic Montages
Photographic Modelling: Welsh Site
Animated Montage Views of Wind Farm - Scottish area
Example of Tan score
 

Example of Tan score

Step 1.

Identify and photograph key viewpoints

Step 2.

Simulate after development

Step 3.

Analyse content of photograph from 1/4 inch grid overlay

Step 4.

 Compute and compare before and after predicted scores
A. Calculate SHAFER score
Landscape zone Measurement Model variable Value
A Not required n/a n/a
B Perimeter X1 0
C Area X4 0
D Perimeter X3 0
E Not required n/a n/a
F Perimeter X2 122
G Area X6 31
J Area X5 0
SHAFER score = 184.8 - 0.09298(122) + 0.001634(122)(30.5) = 179.55
B. Calculate before and after Tan scores
Before development score = 170.49 - 0.63(179.55) - 47.38 (ln.(1+0)) + 4.54(0) = 57.37
Total no. of turbines = 1 Turbines in far distance zone = 1
After development score = 170.49 - 0.63(179.55) - 47.38 (ln.(1+1)) + 4.54(1) = 29.22
Total no. of turbines = 8 Turbines in far distance zone = 8
After development score = 170.49 - 0.63(179.55) - 47.38 (ln.(8+1))+ 4.54(8) = -10.55
Total no. of turbines = 15 Turbines in far distance zone = 15
After development score = 170.49 - 0.63(179.55) - 47.38 (ln.(15+1)) + 4.54(15) = -5.77
Updated: 23 January 2024
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