Green Options

Walking the floor of WINDPOWER 2008, the annual conference and trade show for the wind energy industry, one couldn’t help but be transfixed by all of the different types of turbines - at least I couldn’t. The wind turbine has become the iconic of clean, renewable energy. But the classic three-bladed horizontal axis wind turbine, with its gracefully swooping blades, has become the symbol of not only renewable energy, but also of environmental consciousness and ecological possibility.

Despite the ubiquity of the three-bladed turbine, the oft-overlooked vertical-axes turbines are making quite a splash in the world of wind energy, especially in small and micro-applications. So what’s all the fuss about? Vertical-axis turbines apparently do not suffer from some of the same problems that plague small wind applications in urban settings including, aesthetic concerns, space requirements and sound levels

Other advantages of vertical-axis turbines:

• Can produce up to 50% more electricity per year than conventional turbines with the same swept area;
• Generate electricity at much lower wind speeds, as low as 4 mph (1.5 m/s)Will continue to generate power in high wind speeds, up to 130 mph (60m/s) depending on the mode;
• Direct-drive units with no gearbox means a more efficient transfer of energy and no leaking oil;
• Will not harm wildlife, in terms of bird and bat strikes.

Below, I’ll cover some more basic differences and show you a few photos and short videos of some of these turbines I saw down in Houston at WINDPOWER 2008.

Houston, TX - Another large wind turbine manufacturer has decided to get in on the incredible growth in the U.S. wind energy industry by building a new manufacturing facility. The German company Nordex, announced Tuesday at WINDPOWER 2008** that it will be spending around $100 million over the next few years to establish its own U.S. production facilities for turbines and blades. As early as 2009, the first locally produced 2.5 MW N80/90 wind turbines will be entering the US market. The investment will be spent on establishing annual production capacity of 750 megawatts by 2012. As of 2010, Nordex wants to invest two thirds of this sum in rotor blade production. Roughly 600 jobs will be created at the new production facility.

On Wednesday, I had the opportunity to sit down with company founder Carsten Pederson for a couple of minutes to talk about the new U.S. manufacturing facility and what effect a lapse in the federal renewable energy production tax credit (PTC) might have on the wind energy industry. He jokingly agreed to chat with me under the conditions that I didn’t ask him tough questions like where exactly the new facility would be located (presumably because they haven’t finalized the deal yet).

Houston, TX - The U.S. Department of Energy’s National Renewable Energy Lab has just announced three research and development partnerships with Siemens and the University Houston.

NREL Director Dan Arvizu made the announcement at a press conference on Tuesday at the American Wind Energy Association’s annual conference in Houston. “We are very excited to be a part of this new movement,” said Mr. Arvizu. He added that wind power has come a long way in a relatively short period of time, and that things have changed quite dramatically.

The announcement came just one day after Vestas Wind Systems, and DOE’s Andy Karsner announced that it had chosen Houston, Texas as the location for its new research facility in the U.S.