Introduction to Modern Wind Turbines - Wind Turbine Technology: Fundamental Concepts of Wind Turbine Engineering - page 50

Modern Large-Scale Wind Turbines
Often described as utility-scale because of their application in wind power stations feed-
ing power to electrical utility grids, modern large-scale wind turbines are typically 3-bladed
horizontal-axis machines. Figure 2-3 shows typical utility-scale wind turbines, General Elec-
tric (GE) 1.5-MW Model 1.5s HAWTs , with 70.5-m diameter rotors and 64.7 m hub heights.
The turbines pictured here are part of a cluster of 136 units installed at the New Mexico Wind
Energy Center, producing a rated station power of 204 MW.
Figure 2-3. These GE Model-1.5s wind turbines, each rated at 1.5 MW, are typical of
modern utility-scale machines, with their 3-bladed 70.5-m diameter rotors mounted
upwind of tubular towers at a hub-height of 64.7 m. ( Courtesy of GE Energy, Inc. )