A Study of Landscape Sensitivities and Constraints to Wind

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3.34. Detail on each of these typologies is noted in Table 3.4 below.Table 3.4: Definition of Turbine TypologiesHeight classHeight range(to blade tip)Number of turbinesTypical powerratingGridconnectionTypical associated infrastructureHeight Class 1 25 – 40m Single 10KW- 50KW Yes or No Battery unit or may require a small building tohouse inverter and controller if connected tothe grid.Height Class 2 40 – 80m SingleSmall group (2-4)50KW – 800KW Yes Access tracks, control building/ substation,anemometerHeight Class 3 80 – 130m SingleSmall group (2-4)800KW +(e.g. up tocurrent largestcommercialturbine of3MW)YesAccess tracks, powerlines, fencing, controlbuildings/sub station(s), anemometers3.35. It should be noted that the three turbine typologies are relative terms representing arbitrary divisions of a continuum; they havebeen developed simply as an aid to the evaluation and making of judgements. Visualising hypothetical height differences in thefield is complex. As such, each typology is represented by a nominal blade tip height (the tallest within the range) for the purposeof making judgements as to the effect of different heights of turbines on the landscape. If a planning application is received on thethreshold of a type, for example for a turbine of 75m, it is recommended that the sensitivity analysis and judgements are reviewedfor both a Height Class 2 and Height 3 development.3.36. In addition to the turbines themselves, wind turbine developments may include a range of ancillary structures such as access tracks,power/pylon lines, sub stations, fencing, anemometers. Built structures such as sub stations maybe located on site or off site. Thelandscape may also be sensitive to these additional structures. It was considered too complex to attempt to define a range oftypologies taking into consideration different combinations of infrastructure and it would be virtually impossible to assess suchNorth Wessex Downs AONB: Landscape Sensitivities 24The Policy Framework, Current Wind Turbine Schemesand and Constraints to Wind Turbine Development Definition of Turbine Typologies
complexities in the field. Specific sensitivities to ancillary structures are therefore pointed up in the analysis in relation to individuallandscape types.3.37. The generic typologies are taken forward as part of the assessment process to allow visualisation of the effect of different scales ofdevelopment within the landscape.3.38. The different height classes are illustrated on Figure 3.1. This figure places the three different height classes in context in relation tothe Cherhill Monument (38m), standard 400 kV pylons (50m) and the Membury Transmitter (152m). This figure is provided simply as acomparison of heights; a moving wind turbine is perceived in a very different way to a monument or transmitter which may have agreater mass different associations, or a pylon which is perceived as one of many structures forming a linear development.North Wessex Downs AONB: Landscape Sensitivities 25The Policy Framework, Current Wind Turbine Schemesand and Constraints to Wind Turbine Development Definition of Turbine Typologies
Page 1: North Wessex Downs AONBA Study of L
Page 5 and 6: EXECUTIVE SUMMARY AND USER GUIDEPAR
Page 7 and 8: Constraints to Wind Turbine Develop
Page 9: APPENDIX 1: Membership of Steering
Page 12: Summary of Sensitivities and Constr
Page 15 and 16: North Wessex Downs AONB: Landscape
Page 17: PART 1:INTRODUCTION
Page 20 and 21: y the AONB designation. Renewable e
Page 22 and 23: • The section on wind turbine cha
Page 25: Vale of White Horse DistrictSouth O
Page 28 and 29: 2.7. Arrangement - Single Turbines
Page 31 and 32: 2.12. Wind turbines convert the win
Page 33 and 34: Generic Landscape Impacts of Wind T
Page 35: ReferencesBritish Wind Energy Assoc
Page 38 and 39: PPS 22 Companion Guide (2004)3.5. I
Page 40 and 41: need to develop sustainable communi
Page 42 and 43: submitted, approved and refused in
Page 44 and 45: Looking to the Future3.28. It is sp
Page 51 and 52: 4. METHOD STATEMENTIntroduction4.1.
Page 53 and 54: 4.9. Information on how stakeholder
Page 55 and 56: sensitive. There will be a range of
Page 57: 4.21. The judgements are made on th
Page 61: Figure 5.1 - Landscape Character Ar
Page 65: 1. Open Downland
Page 68 and 69: • Few hedgerows and virtual absen
Page 70 and 71: Landscape Values• Strong artistic
Page 72 and 73: Key CharacteristicsLandmarks/Import
Page 74 and 75: CONSTRAINTS TO WIND TURBINE DEVELOP
Page 77: 2. Downland with Woodland6Di5D6Dii5
Page 80 and 81: • Intricate network of rural lane
Page 82 and 83: Summary of Landscape Values: The No
Page 84 and 85: Key Characteristics• Numerous Bro
Page 86 and 87: CONSTRAINTS TO WIND TURBINE DEVELOP
Page 88 and 89: Notes on Cumulative Development: It
Page 91 and 92: LANDSCAPE TYPE 3: WOODED PLATEAULAN
Page 93 and 94: LANDSCAPE VALUEIn the following tab
Page 95 and 96: Key CharacteristicsTottenham Park a
Page 97 and 98:
CONSTRAINTS TO WIND TURBINE DEVELOP
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4. High Chalk Plain6Di5D6Dii5C5D5F5
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• Unlike other parts of Salisbury
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LANDSCAPE SENSITIVITYIn the followi
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Key Characteristics• Views from t
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SUMMARY OF CONSTRAINTS IN RELATION
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LANDSCAPE TYPE 5i: SCARPLANDSCAPE C
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The following tables consider the k
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Key Characteristics• Intricate la
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Key CharacteristicsSensitivitiesSum
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Settlement• Largely uninhabited w
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Summary of Landscape Values: The No
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Key Characteristics• Extensive de
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Note: the summary of constraints in
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LANDSCAPE TYPE 6: VALESLANDSCAPE CH
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The following tables consider the k
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Key Characteristics• Steep chalk
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Key CharacteristicsSensitivitiescha
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7. River Valleys6Di5D6Dii5C5D5F5E6C
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• Linear and nucleated villages c
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Landscape Valuesstreams and rivers,
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Key CharacteristicsSensitivities•
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8. Lowland Mosaic6Di5D6Dii5C5D5F5E6
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• Network of ancient semi-natural
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Summary of Landscape Values: This i
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Key Characteristics• The woodland
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• in character area 8E the relati
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6. NORTH WESSEX DOWNS AONB: SUMMARY
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Summary of Constraints to the Diffe
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6.6. In conclusion, this study has
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APPENDIX 1: MEMBERSHIP OF STEERING
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Bush, Cllr SarahBuxton, Dr RobinCar
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Jackson, MattKaneen, CarolineKemp,
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Still, ElizabethTartaglia-Kershaw,
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APPENDIX 2: TYPES OF WIND TURBINETh
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The following organisations were co
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APPENDIX 3: REMOTENESS AND TRANQUIL
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The results indicate that the most
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A Study of Landscape Sensitivities and Constraints to Wind

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