Wind Power | ICE Network

How does wind power work?

Wind turbines capture the energy of moving air and convert it to electricity. The turbines are installed on towers, to access higher and more constant wind speeds. When the wind passes over the blades of the turbine, it causes the rotor to turn, which then spins a shaft. The shaft turns gears and a generator, which produces the electrical current. Cables carry the current down the tower to a substation, then to transmission lines that carry it to local homes and businesses, or to the electrical grid. Wind turbines range in size from a few hundred watts to 3-5 MW.

Three main factors influence how much electricity a turbine will generate: Wind speed, blade radius and air density. Stronger winds produce more energy. The turbines are designed for wind speeds between 14 and 90 km/h but if the wind blows too fast, a brake automatically stops the turbine to prevent damage to the equipment. Longer blades produce more power. Finally, “heavier” air, such as the air found at sea level, drives the rotor more efficiently. At higher altitudes air is “lighter”, with lower air pressure, and provides less lift and power to the blades.

How do I know if wind is right for my community?

Below are some initial questions you should ask yourself if your community is interested in pursuing wind. Truly pursuing a project requires much more detail and research.

• Are there potential sites with consistent wind? The best sites are on the coast or lakeshore, on a ridge, on flat or gently rolling ground. They are at least 10 metres above any physical wind barriers located within a 100 metre radius.
• Do you have wind data, as well as Traditional Knowledge of wind patterns? You can acquire an anemometer and track wind speeds and direction, for 1 – 2 years. This will help to forecast the energy yield. Other factors include the elevation and average air density.
• Is the potential site in an ecologically sensitive area or is there a risk to wildlife? Are there public concerns about wind power that need to be addressed?

Who else is doing wind?

Use the map below to see existing projects wind projects that include Indigenous participation. Click on a map dot to learn more about the projects.