Vertical-axis wind turbine

An elegant vertical-axis wind turbine, quietRevolution has been designed and developed by XCO2, an established low-carbon energy consultancy and engineering practice. Virtually silent and vibration free, quietRevolution is ideally suited to both urban sites and exposed locations.The simple and robust design (patent pending) has just one moving part, maximising reliability and minimising maintenance requirements. Light Emitting Diodes (LEDs) embedded in each of its three S-shaped blades fire in sequence as the blades rotate, painting a video screen that appears to hang in the air. This full colour and motion image is clearly visible day and night.

Source: 7 June 2006