Turbine-free wind turbines for rooftops
(Source: Aeromine Technologies)

Turbine-free wind turbines for rooftops

It may not just be solar panels that we find on commercial building rooftops. Perhaps wind could find the perfect fit too.

Summary: Well, not really turbines. Here the wind is drawn in between two aerofoils, similar to aeroplane wings. They create a negative pressure that sucks the wind that’s hitting the building through an internal propeller on the bottom of the unit. It’s undergoing trials - so one to watch.

Why this is important: Could be a great fit with solar and batteries for local distributed energy and microgrids.

The big theme: If we are to decarbonise our energy system, local distributed energy is going to play an important role. Local solar, wind and batteries could make communities largely self-sufficient. And this is not just a developing world issue, microgrids, as they are known, can also aid grid resilience in developed markets. We are all familiar with how quickly roof top solar has expanded, but local, small scale wind turbines have been less successful.

The details

Summary of a story from Fast Company:

A typical wind turbine is massive—roughly as tall as the Statue of Liberty, with blades that stretch wider than a football field. (Some are even bigger, like a new offshore turbine from Siemens that has a 774-foot-wide rotor.) By contrast, this new 10-by-10 foot turbine is relatively tiny. And without moving blades, it isn’t immediately recognizable as wind energy tech. The devices, designed by a startup called Aeromine, are meant to sit on the edge of a rooftop instead of out in a field, and can work alongside solar panels.

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