The problem
Solar stops when the sun does.
Night, winter, and storms leave a gap. Rooftop wind could fill it, but today's turbines have open spinning blades, flicker, and struggle in messy city wind.
What we're building
Blades inside a shell.
The blades sit behind a stationary shell. That is safer for people and wildlife, and it cuts the flicker. The shell and the building are meant to speed the wind up before it reaches the blades.
Where we are
Late-stage R&D.
A prototype has shown 2 kW. The design target is 6–13 kW. Pilots come next, then third-party certification. Nothing is for sale yet.
Why it matters
Power that doesn't wait for a sunny afternoon.
A roof that makes power around the clock means more energy security for the building and a stronger grid.