Modern wind turbines fall into two basic groups: the horizontal-axis variety, as shown in the photo to the far right, and the vertical-axis design, like the eggbeater-style Darrieus model pictured to the immediate right, named after its French inventor. Horizontal-axis wind turbines typically have two or three blades. These three-bladed wind turbines are operated “upwind,” with the blades facing into the wind.
Utility-scale turbines range in size from 100 kilowatts to as large as several megawatts. Larger wind turbines are more cost effective and are grouped together into wind farms, which provide bulk power to the electrical grid. Offshore wind turbines are larger, can generate more power, and do not have the same transportation challenges as land-based wind installations, as the large components can be transported on ships instead of on roads.
Single small turbines, below 100 kilowatts, are used for homes, telecommunications dishes, or water pumping. Small turbines are sometimes used in connection with diesel generators, batteries, and photovoltaic systems. These systems are called hybrid wind systems and are typically used in remote, off-grid locations, where a connection to the utility grid is not available.
Learn more about what the Wind Program is doing to support the deployment of small and mid-sized turbines for homes, businesses, farms, and community wind projects.
EcoSmart Energy Systems looks for opportunities for in the Middle East to help to implement wind energy projects.
