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Wind Energy Services
NWCC – Wind 101
October 27, 2008 – Milwaukee, WI
Overview of the Construction
Process
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Typical sequence of wind farm construction
Access Roads
Concrete Batch Plant (if required)
Public Road Improvements (if required)
Turbine Foundations
Electrical Collection System
Wind Turbines
Project Substation
Operations and Maintenance Facility
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Access Roads
Gravel roads linking wind turbine strings to existing
roads
Typical construction sequence:
• Install erosion and sediment controls where required
• Clear and grade road
• Install required drainage (i.e. culverts)
• Install base materials (i.e. geo-fabric or Geo-Grid)
• Install and compact gravel road
In sensitive areas (i.e. wetlands), the width of the road
(temporary and permanent) should be as minimal as
possible
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Install erosion and sediment controls
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Clear and Grade Road
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Install required drainage (i.e. culverts)
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Install base materials (i.e. geo-fabric or Geo-
Grid)
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Install and compact gravel road
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Concrete Batch Plant (if required)
Requires and air quality permit
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Public Road Improvements
Road and intersection widening
Culvert and bridge replacement
Reconstruction of previously existing roads
Often requires road permits from DOT, County and also
environmental regulatory agency
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Turbine Foundations
Temporary turbine workspace typically 150 – 200 foot
radius
Permanent area of disturbance typically 50 foot radius
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Turbine Foundations, con’t.
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Turbine Foundations, con’t.
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Turbine Foundations, con’t.
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Electrical Collection System
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Electrical Collection System, con’t.
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Wind Turbine Erection
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Wind Turbine Erection, con’t
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Wind Turbine Erection, con’t
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Wind Turbine Erection, con’t.
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Wind Turbine Erection con’t.
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Project Substation
Be sure to install appropriate secondary containment in
accordance with SPCC regulations
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Restoration and Reclamation
Restore and reclaim
In accordance with
Issued permits and
agreements with various
agencies (i.e. agricultural)
and landowners
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Contact Information
Aileen Giovanello
Director of Business Development
Tetra Tech EC, Inc.
Boston MA 02127
617-457-8236
www.tteci.com
