Page 342 - Fluid Power Engineering

302 Chapter Fourteen

Construction
Development &
Operation
18 to 36 Installation 20 years
months 3 to 12
months

FIGURE 14-1 Three phases of wind project.
measurement,windassessment,projectsiting,permitting,en-
gineering, financing, engineering procurement, and construc-
tion (EPC) contracting, up to preconstruction. The duration
of this phase is anywhere from 18 to 36 months. The longest
lead-time item is wind measurement; most financiers require
at least 2 years of onsite measurement for large projects.
2. Construction and installation. In this phase, all the physical on-
site activities occur starting from site preparation, turbine
transportation, foundation construction, turbine erection,
collectionsystemandsubstationinstallation,andprojectcom-
missioning. The duration of this phase is 3–12 months, de-
pending on the size of the project.
3. Operation. In this phase, energy is produced by the wind
project. Activities in this phase include, wind plant monitor-
ing, and scheduled and unscheduled maintenance.

Development
The development phase may be decomposed into the following five
stages:
Prospecting

Wind measurement and detailed wind assessment

Project siting, PPA, and interconnection

Project engineering and procurement

Project financing

As shown in Fig. 14-2, the stages may have significant time over-
lap.

FIGURE 14-2 Typical timeline for the development phase.