Whatever happened to kite power?

In the early days of this blog I remember writing about kite power, and a pioneering project to attach kites to the front of ships to help them save energy. That didn’t come to much. Then there was a buzz around a kite power company that Google bought and had… ahem, high hopes for. That disappeared too. There’s a third round of interest at the moment with the start-up KitePower. It’s an idea that won’t go away.

The reason why kite power remains an attractive idea is that wind speeds are high...