Wind Power

A Dutch startup spun out of the Delft University of Technology has launched the Kitepower Hawk, a wind energy storage solution that's designed to replace diesel generators for small island communities, on construction sites or in agriculture.

It looks nothing like a typical "fan on a stick" wind turbine, but this oval track with evenly spaced wing blades could be an enormously disruptive addition to the renewable energy mix, since it slashes the cost of wind power to unprecedented lows.

A wildly innovative turbine that could halve the cost of offshore wind is set to go into testing in Norway. The 19-m (62-ft), 30-kW, contra-rotating vertical-axis turbine is a prototype of a design that could scale to unprecedented size and power.

We haven't seen a floating offshore wind turbine like this before. Touchwind claims its innovative single-blade turbines will solve several problems to drive down cost and downtime, using a single, huge blade with no fancy active pitch controls.

One inconvenient truth for the clean energy industry – and a source of seemingly great concern to the fossil fuel lobby – is the indisputable fact that wind turbines kill birds. Researchers say smarter turbines could dramatically cut the toll.

Irish company Gazelle has announced the third generation of a fascinating new floating wind platform design it says can stabiliize massive offshore turbines up to 20 MW in capacity, while radically reducing weight, cost and sea floor cable tension.

Denver's Keystone Tower Systems says it can cut the cost of wind energy with tech borrowed from pipemaking. It uses spiral welding techniques to roll sheet steel into huge turbine towers on-site, stronger, faster and cheaper than current techniques.

Extreme engineering is becoming the norm as offshore wind continues to scale up. Sweeping the area of 12.3 standard NFL fields each rotation, with gargantuan 140-meter (459-ft) blades, the MySE 18.X-28X will be the largest wind turbine ever built.

Wind energy is often thought of as "clean" but, in fact, the technology has the blood of thousands (if not millions) of bats on its hands. A new drone-mounted system shows promise in rerouting some bats above the turbine blades and away from danger.

Floating wind turbines are crucial to the future of offshore wind, but they require radically different thinking. French company Eolink is building a full-scale pyramid-style floating wind turbine that reduces materials and weight by more than 30%.

Aeromine says its unique "motionless" rooftop wind generators deliver up to 50% more energy than a solar array of the same price, while taking up just 10% of the roof space and operating more or less silently. In independent tests, they seem legit.

While wind energy systems can come in some pretty big forms, scientists at Nanyang Technological University (NTU), Singapore have developed a small, low-cost device sensitive enough to capture energy from a light breeze.