Green Options

Ever the dabbler in architectural criticism, The Prince of Wales has criticized the green building industry for relying on eco-gadgets like wind turbines and solar panels while ignoring inefficient buildings.

The U.S. small wind industry projects that the enactment of the credit, combined with a forthcoming equipment certification program, will provide thousands of new green collar jobs and contribute to an estimated 40% annual growth for the industry.

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.

Word has it that the farm bill congressional conferees hammered out at the end of last week would most likely be vetoed by President Bush. The ink has not dried on the agreement, and that is why Congress had to pass an extension of the existing farm bill last week. The extension gives lawmakers until May 2, when they must either pass another stopgap measure or resort to the permanent 1949 agriculture law, if a new bill is not completed.

According to Ryan Grimm at Politico.com, when asked what the President would do if the current iteration of the farm bill made its way to the President’s desk White House spokesman Scott Stanzel replied, “as it stands now, it is not something the president would support.” Stanzel wrote in an email:

“The proposal before Congress would dramatically increase spending, in part by masking additional spending in budgetary gimmicks and accounting tricks.”

Farm bills pass - that’s what they do

Despite the threat, there may be enough Congressional support to override the veto. According to House Agriculture Committee Chairman Collin Peterson (D-MN), “If the White House is stupid enough to veto this, they’re going to get overridden.”

The farm bill is a very popular funding mechanism for Congressional spending. Every state’s congressional delegation works extremely hard to get their slice of the agricultural pie - not doing so does not bode well in the eyes of powerful ag interests and the voters of agricultural states. In short, farm bills do not get vetoed. At least very rarely do they get vetoed - there are a few exceptions.

I took this short video of a new, small vertical axis turbine at Colorado State University in Fort Collins, CO. Despite the fact that it sounds quite windy in the video, it really wasn’t. [try to ignore the sounds coming from my very excited dog]. Running time: 50 seconds.

See also: Top 5 Micro Wind Turbines

They have been around for centuries, but they are quickly becoming the darlings of the eco-friendlies and clean energy nuts. Windmills, or in this case, wind energy generators, come in all shapes and sizes.